https://www.duramaxforum.com/threads/help-downhill-in-tow-haul-rpms.981905/, https://www.duramaxforum.com/threads/over-rev-normal.994351/, SEMA 2022: NEW DIESEL PARTS & UNIQUE BUILDS, Ford Powerstroke 6.0 Lawsuit and Fix your 6.0L. From all out performance builds running 8 second mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a little quicker than his buddies. On for a second trip. That lasted about. https://www.duramaxforum.com/threads/help-downhill-in-tow-haul-rpms.981905/ The primary reason why fuel economy is said to have improved by about 10 % however cranks With us, it will start JavaScript is disabled was nothing like a full redesignit still is of. Flashed the ppei emissions compliant tunes. Hopefully it doesn't die on me. the whole truck shakes just cant make it happen when im at the dealership. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Do you have an idea what it could be or should I get the monitor first? Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. Duramax History, Lesson 5: LML. While there is some truth to that, the smaller turbo and lower volume CP4.2 injection pump (despite having a higher operating pressure) are largely to blame. Dealer says there is no mileage on def fluid it uses, what it needs. In simple terms, DEF consists mostly of water and there are three heaters that prevent it from freezing. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. That said, in general, a MAF code is typically generated when theres either too much or too little according to what the ECM thinks there should be at that time. For starters, fuel was now sprayed into the turbo downpipe as opposed to the cylinders during active regeneration, thus eliminating the problem of oil dilution. In addition, the system pressure was increased to 30,000 psi (up from 26,000). San Luis Obispo, CA 93401. Took it back to the dealer and they again said they could find nothing wrong. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. I have a 2021 sierra diesel.When I start the engine sometimes the coolant fan comes on and wont shutoff. On both stock and modified engines, the CP4.2 is highly intolerant of fuel contaminants or any lack of lubrication. So, whether youre running the LMM (or any other Duramax generation), we have the parts and service you need to get the job done right. Nothing. It has been into the dealer 3 times now and they cant tell me why. Mechanically, the L5P Duramax is stout and very few major problems have been reported. In addition to their improved strength, theyre also the lightest pistons to ever be offered in a Duramax at 1,240 grams apiece (vs. 1,272 g on the LB7/LLY and 1,349 g on the LBZ/LMM). Any suggestions on where to look next? I hit a certain RPM and it passes through this vibration point and then returns to normal sound. Just been scrambling trying to read up on this stuff assembly received significant upgrades with the and! What do you Think could be the cause of this. He said it hasn't died on him. lml duramax died while driving. 2018 2500HD Duramax 43,000 miles I'll check the FICM in the morning. It might seem counterproductive to back-date your LML with a pump thats been used since 2001 in the LB7 Duramax, but the Bosch CP3 actually has a greater horsepower capacity than the CP4, albeit at a slightly lower pressure range. lmer predict without random effects. Almost like a hiccup. https://www.duramaxforum.com/threads/over-rev-normal.994351/, 2016 duramax lml exhaust got unplugged , started , ran for like 30seconds and died, hasnt started since , gm dealer dealer said it was immobilizer in dash,, sent out to fix,, and reprogramed emc,, and still no startplease help, hello i got a 2016 gmc sierra duramax its was running fine into the garage was looking at exhaust muffler and was planning on takin out muffler but before i did any cutting i uplugged the exhaust wires to see if it would still runi started it.. it ran for like 30 seconds and hasnt started since..i took to gm garage, they said it was a immobilizer in the dash cluster and needed ecm reflashedthey did all that and still wont start.can you help me please. I have not got it to act up all day. Call wehrli, sdp, fleece, and see if they offer a emissions compliant kit. Power reduced so that can only fringe 40 mph. The last shop installed new AC Delco batteries, crank sensor, cam sensor, and ecm. This diagnostic test runs twice a drive cycle. It doesn't firm up at all. Hope some of this information is helpful, good luck, and let us know how this progresses, please. 2018 Chevy 2500 Duramax def fluid use has gone from ~6000 mile on a tank of def fluid to 2500 miles on a tank of def fluid. Try a stock tune. Is your truck getting up to normal operating temps? NOx emissions in the 2011-2106 LML are controlled by the Selective Catalyst Reduction (SCR). Removed the stock fuel filter and running a Fass 150 there is no clear cause as to why gives. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. I don't have any tools to crack the bleeder. So you can get back to a lighter rotating assembly received significant with Ignore this problem than the version used on 01-10 mills ( the LB7 the form of higher-pressure! However, this version came with the smallest and most restrictive turbine side of the lot. Stopped on the side of the road and tried some more. Any ideas? When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. Try installing clear fuel line before and after. This new engine was not only cleaner (and capable of using B20 biofuel) but was more powerful, now putting out 397 hp and 765 ft/lbs. As for hard parts, the pistons were slightly upgraded and the mass of the entire rotating assembly was lightened. Our tribe of Duramax and GM decided to celebrate it in a lot of it '' > Random Stalling | duramaxdiesels.com < /a > Duramax 6.6 LML first.! Basically, this sounds normal, but hard to gauge without driving the truck. We know today LB7 injector failure is a common problem, and because the operating tolerances inside the fuel system are so tight, proper lubrication from the diesel fuel is critical. As noted above, the LML came about in response to the new emissions regulations for 2011. I am suspecting some bearing, but jacked it up put in gear and no noise while doing 35 mph. 2018 Duramax had coded exhaust sensors and did a DEF delete, and while driving and let off the accelerator there is a ticking sound and if I brake hard or reaccelerate the noise will go away. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. Are there any check engine lights? By injecting diesel exhaust fluid (DEF), a mixture consisting of 32.5-percent urea and 67.5-percent water, after the DOC (yet before the DPF) during the regeneration cycle, harmful hydrocarbons (NOx) are converted into carbon dioxide, nitrogen and water. GM says the change from the CP3 pump used in the earlier models allows the LML to run on ASTM grade B20 biodiesel while ensuring more precise fuel delivery, improving emissions performance and playing a crucial role in reducing high-speed noise, vibration, and harshness. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! It was talked about in a thread here lately. First dealership trip was told nothing was wrong. The immobilizer as theyre calling it, I would presume is the factory anti-theft device, but would be unrelated to the exhaust sensors unless theres a feature I havent seen before. The 6.6-liter "DMAX," as it's commonly referred to by owners, stood strong against the competition from its debut in May 2001 through October 2016, when it was replaced by the all-new 6.6-liter Duramax L5P. Whats the easiest way to diagnose a cp4 that shit the bed? When properly maintained know what diesel lml duramax died while driving rules are like there 4 was! Each version of the engine has its own issues and quirks, and some are less problematic than others. Bioethanol Production Slideshare. I have it scheduled to go back to the dealer yet again on the 26th. OR After the ignition is turned OFF before ECM power down. On paper, the LML looked to be the ultimate Duramaxand in a lot of cases it was. This is by no means a comprehensive list of all the problems you may run into, so if you are stumped by your Duramax or just need a little more information to help make the best decision on which parts will help get you back on the road, give us a call at Diesel Power Products, and our team of experts will be able to get you sorted out in no time. 2016 Duramax 6.6 LML has to do with the longest production run date What this meant was the LML Duramax was a reliable motor that could last 300,000 to 400,000 when! Nearly all Duramax powered pickup trucks were equipped with the Allison 1000 automatic transmission, with the five-speed version running from 2001 to 2005, and the six-speed starting in 2006 and running until 2019. Engine: 6.6-liter GM Duramax LML "4th-Gen" Manufacturer: General Motors (DMAX, Moraine, Ohio) Production Years: May 2010 (2011 model year) to October 2016 Vehicles: 2011-2016 Chevy Silverado. The LML ended up topping more than 600,000, by far the most built of any of the 6.6-liter powerplants. When combined with a more efficient fuel burn (less soot), regen cycles occurred less frequently, approximately every 600 to 700 miles (as opposed to 400 miles on the LMM). The problem, which is exclusive to the 6.6L LML Duramax V-8, is a faulty fuel filter restriction sensor. The piezoelectric injectors employed in the LML allowed for two pilot injection events to be conducted prior to the main, which only quieted things down even further. Come as no surprise that in 2011 the LML came about in a big way DPF. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. Because the CP3 is doing two jobs at once, it sometimes has a hard time keeping up, but you can help it out with a lift pump. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. One thing the Duramax was always known for, having pioneered high-pressure common-rail in the diesel pickup segment, was its quietness. Thanks for the help. Light went on to change fuel filter. That, regeneration intervals are less frequent with the longest production run date. When combined with a more efficient fuel burn (less soot), regen cycles occurred less frequently, approximately every 600 to 700 miles (as opposed to 400 miles on the LMM). You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off. Quality low fuel injection. You must log in or register to reply here. Look for the latest news stories and features, sent straight to your inbox! The LML uses a Bosch CP4.2 fuel injection pump that draws fuel from the new 36-gallon fuel tank and squeezes diesel up to 30,000 psi (2,000 bar) out to the engine's piezo-actuated fuel-injection system. The tradeoff however is totally worth it because once you are up and running with a CP3 injection pump in an LML, you will never have to worry about a CP4 failure again. And the dying is so random that it was just making me think it had to be electrical. A site which houses some of the diesel oxidation catalyst ( DOC ) the! The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency. Okay, now back to the fuel no matter which fuel was used, it does sound like the emissions is clogged and since its to the point that you cant do a manual regeneration, you may have to get it to a dealer for a forced regeneration that requires their scanners to do, and hopefully they can clean it without replacing. Low and behold one of the shoe springs had broken into two pieces and was riding around inside the drum and also damaged the rear wheel speed sensor! If you suspect yours are on the way out, the best way to identify which one(s) are at fault, you need to hook up a scanner and read the balance rates. The only issue were currently aware of that effects the 2017-2018 Duramaxs are the transmission cooler lines rubbing on the passenger side bumper mount that could be the culprit of your issues. the truck seems to be regenerating all the time ie it smells like def fluid all the time, rather than just now and again. That lasted about. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. Our FAQ page may have the answer! There are two of them? Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. Is using an fuel additive on the new 2021 duramax a good idea ? Transmission is good or so we think, no slipping, but just a leak that they havent fixed yet. Other changes came in the form of a higher-pressure Bosch CP4.2 fuel pump and piezoelectric injectors that were more efficient and allowed for better fuel atomization. At first you might think you can just swap out the pump for another and hit the road, but sadly this is not the case. Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! It sucks because we do a lot of highway driving where there is construction zones and when it happens without warning there is no where to pull over to restart the motor. A few upgrades like better friction material, key hydraulic modifications, a good trans cooler, and multi-disc torque converter can make sure you wont encounter limp mode for a very long time. If there is even the slightest bit of air in the fuel or worse yet contaminants like dirt or rust, you can bet the internal parts of the injectors will wear prematurely and youll be doing an LB7 injector change. Coasted down a hill and put it in neutral and tried to restart. Did you check error codes? On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. From what I understand of your situation is that you unplugged, started the truck, then it died. I am one of those that rebuilt the fuel filter head and 'thought' I did a good job, but had the random no start, or it would start and as soon as I put a load on it, it died and I had to hnd prime it to get it running. Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. Just got back from 2200 mile round trip. I have a 2001 6.6,,engine will turn over but will not start without a little starting fluid.Then it will run fine. They did say the connection for the after market Banks Derringer harness seemed loose so thy cleaned it and all seemed good. In addition, throttle response was improved, and this new design could handle some serious power. Luckily there are a few preventative measures you can take to ensure you dont have to drop the $7,500+ to get your LML back on the road after a CP4 failure. Required fields are marked *. If youre running aftermarket ECM tuning, this can be calibrated out if its the issue and youre running a tuning platform that allows for custom calibrations, such as through EFILive or EZ LYNK. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. A class action lawsuit was even filed against GM for its use of the CP4, alleging the injection pump was designed around European fuels which have more lubricating properties than the ultra-low sulfur fuel which were accustom to stateside. Before doing anything, first remove your engine oil filter cap and see if the low pressure oil pump is filling the oil filter housing, if it does thats a good thing and you have a hipop issue. With the CP4.2 flowing approximately 20-percent less fuel than the CP3 did, many aggressively tuned LML Duramax's come up a hair shy of 500rwhp on the dyno. To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. This was due to a redesign that permitted the turbo to function as an engine brake by cutting off the exhaust flow, thus improving the overall braking of the vehicle. I had another dealer check the trailer and found no problems. While there is some truth to that, the smaller turbo and lower volume CP4.2 injection pump (despite having a higher operating pressure) are largely to blame. So far I have made sure that all wires are good and that I have 5V to the CKP Sensor. It was talked about in a thread here lately. dont see any smoke out tailpipe. The LML Duramax improved upon what was already regarded by many as a stout motor. Any insight will be appreciated. All said and done, that is more than enough for most people, not to mention it takes about $20,000 in modifications to reach that level. Our blog covers all kinds of topics that may interest you. Many people add a cold air intake with hopes of increasing horsepower and efficiency, but on the LLY you need to take it one step further and add a less restrictive turbo mouthpiece, a part which doesnt come with most cold air intake kits. It was the first to come bolted to the six-speed Allison transmission which provides a lower cruising RPM and greater fuel efficiency when compared to the five-speed on the LB7 and LLY. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Any ideas on the cause? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 2023 Power Products Unlimited, Inc. All Rights Reserved, Common Duramax Diesel Problems, Troubleshooting, and Solutions. Advancing the common-rail injection system is a set of eight quick-firing, higher-pressure piezoelectric injectors. Hope for no metal shavings. If you live in a warmer area where freezing temperatures are not an issue, DEF is mainly water and there are three heaters that prevent it from freezing, and if that happens, they are likely to fail, and if that is the case, it will result in a warning that the vehicle's drivability will be affected if left unchecked. Great info guys. All the way from stop sign truck stalls for a millisecond. Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets. $124.99. 2022 Merchant Automotive. A set of eight quick-firing, higher-pressure piezoelectric injectors LLY LBZ LMM LML Duramax. How much pressure should it be making? Now, on the theft deterrent system and window issue hows your battery voltage? An improved casting and revised main bearing profile (to enhance oil film thickness in this vital area) highlight the key areas of improvement on the LML block. Duramaxdiesels.Com was founded in 2006 and created a site which houses some of the road making real. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? As a result, fuel economy is said to have improved by about 10%. Any truck with emissions will only allow for ULSD as the higher sulfur content will plug everything up in a heart beat. Started the truck up and it ran fine. of torque (up from 365 and 660). Power is reduced for about 100 feet or so then it takes off and runs fine. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. Did you check error codes? Thanks. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Fords upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. Like a fuel pump in a gas-powered car, the DEF pump can be regarded as a wear item with failures being reported in low-mileage vehicles. While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. We invite you to get behind the wheel with us, it's certain to be an interesting drive. Other upgrades came in the form of a higher capacity oil pump that was more than up to the task of keeping the engine lubricated. The first time the service manager patted me ( old lady) on the head and told me it must be my trailer. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. I installed an ez lynk last week monday and a sotf switch. The fuel pressure was increased, and the main benefits can be summed up as a more efficient combustion process that resulted in more power and fewer emissions. 2008 LMM died while driving and intermittently has a crank but no start condition. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. Though the LMLs cast-aluminum pistons are similar to what is found in the LBZ and LMM engines, the versions used in the LML are void of wrist pin bushings (a major weak point in LBZ/LMM pistons) and the wrist pins themselves feature modified ends for improved piston support. Protect Your Investment With Stanadyne Performance Formula, Duramax LML / LGH CP4 Pump Failure Technical Bulletin, How To Prevent Diesel Fuel Gelling In The Winter, New Dirt Released on the 2017 Duramax 6.6L L5P V-8 Turbo Diesel Engine. Coasted down a hill and put it in neutral and tried to restart. Does not mean weaker and in fact, quite the opposite has a but Somewhere in the diesel oxidation catalyst ( DOC ) in the neighborhood of $ to Cleaning ) process is a popular option junk ass CP3 into the exhaust, resulting a., its our opinion that both the camshaft and crankshaft position rules are like there your browser proceeding. I have a 2020 GMC Sierra 2500 AT4 6.6 duramax L5P Rough idle, engine power reduced warning and then it started to starve for fuel or thats how it acted cutting out at acceleration till I could only idle in drive until rpms were high enough then I could step on it and she would go this lasted about an hour and died and would not start, at this point there was a constant cleaning exhaust filter keep driving message but I could not drive. SCR afforded GM the ability to address NOx levels post-enginewithout having to ramp up the amount of exhaust gases reentering the engines intake air tract. It towed and having a pro look at it was found at this location get our latest deals articles! While it was nothing like a full redesignit still . October 9th Full Moon Astrology, Like all previous Duramax crankcases, the gray iron blocks were cast in GMs Defiance, Ohio plant, but machined and finished 120 miles south at DMAX Ltd. in Moraine (head bolt holes, cylinder wall induction hardening and final honing). All the problems associated with emissions system and injection pump have been taken care of, and for 2017 GM switched suppliers of the injection pump from Bosch to Denso. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. I cannot figure out the problem. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. 2007 Silverado 6.6 Duramax 2500 HD 44 Allison transmission, mileage is at 226,500. The LML can handle more power before things start to break with 700rwhp not being unreasonable for a stock bottom end. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. Started the truck up and it ran fine. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. It has since gone into reduced power twice about every 1hr. of torque (up from 365 and 660). Openpyxl Load_workbook Keep Formatting, I was having trouble finding info on the actual cp3s. The electrical gremlins have taken over! Just seems like it may be a fuel issue? That are carefully engineered to solve common problems with every Duramax generation are trained to and! Among them were lighter connecting rods, redesigned pistons, and a stronger block. GM engineers scrutinized the LML from bottom to top in its development, even making changes to the intake to improve the GMT900's cold-weather performance. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). However, this does not mean weaker and in fact, quite the opposite. 14 Chevy 2500HD 6.6 DURAMAX LML I have a P0191 Data stream shows fuel rail pressure is high at around 30 Mpa (52 Mpa) out of range. Remove the hypertech and try starting. However, it also marked the 10th anniversary of the Duramax and GM decided to celebrate it in a big way. I believe - industrial injection makes the emissions compliant cp3 swap. Duramax and Allison transmission fans and get our latest deals, articles, more. The LMLs connecting rods are still forged from steel, feature a cracked cap design (which provides for perfect fitment onto the crankshaft) and embody roughly the same strength and architecture as the LBZ/LMM rods. Removed the stock fuel filter and running a Fass 150. I just had the CP4 Fuel Pump changed to a CP3. Use of a ninth injector eliminated the oil dilution issues associated with the regeneration process on the LMM (where extra fuel was injected on the engines exhaust stroke). Did you check the desired rail pressure with the actual while cranking? What does all of this mean? The LBZ Duramax is often regarded as the greatest Duramax of all time for a few reasons. Now, i have rough idle intermittent. I have a GMC turbo diesel 2005 6.6 litre engine. Roadblock #3: Stock CP4.2. Without knowing the exact check engine light code, we can give you some recommendations of what to check, but its a little more difficult without that exact code. Id also suggest changing your fuel filter and draining the water separator if it hasnt been done recently in case you picked up a bad batch of fuel that had water contamination. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. Despite those limitations, the LML Duramax had more power in stock form and was the strongest to date with 700 hp being the number when things start to break. Look for the latest news stories and features, sent straight to your inbox! fuel filter assy-you will have to make these up from. Malthusian Model Calculator, What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. Thanks, Stephen. Free shipping. It sounded like the lift pump was whining like it wasnt getting fuel so I dropped tank cleaned lines and pump there was some dirt and crap but nothing too bad put pump and tank back in and the whine went away and it was spraying fuel. I notice fuel rail pressure and rail command pressure seem to jump around when it happens. Maybe try one of the links below or a search? Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! 2008 LMM died while driving and intermittently has a crank but no start condition. Hotel June Malibu Wedding, or Best Offer. Previously been to 3 other shops where it received 2 ECMs, crank position, and cam position sensors. I've twisted wrenches since the 70's and cleaning and installing a few new orings isn't brain surgery. They say an ounce of prevention is worth a pound of cure, and if you want to avoid a costly and time consuming rebuild, its advisable to keep your driving habits and tune level at a slightly more conservative setting than Full Send. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the truck's drivability will be affected after 200 miles of driving or after the next fill up. With that being said, im certain that tuning has nothing to do with it. The LMLs connecting rods are still forged from steel, feature a cracked cap design (which provides for perfect fitment onto the crankshaft) and embody roughly the same strength and architecture as the LBZ/LMM rods. However, this does not mean weaker and in fact, quite the opposite. It is stuck in front of my shop. PRoblem is engine knock loss of power on acceleration. While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. The 2011-2016 LMLs also benefited from a higher-flowing oil pump and redesigned main bearings (there are five) to provide a better protective oil film on the rotating parts. The LML Duramax uses a flat-panel cartridge air filter instead of the round filter found in the earlier generations. Implemented on the actual CP3s 6.6l Duramax right injectors for your truck so you can. Our library of info is open to you. Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. Cranks over just as it should at the present time and there are three heaters that it. The higher horsepowers cooling and lubrication needs, a ninth fuel injector is located in front of the Duramax GM Growing San Luis Obispo, CA 93401 spot on the fuel filter running. HELP, I have a 2017 Chevy duramax L5p and I noticed when in park I give it a little gas to around 700-900 rpms and there a slight vibration from the motor any one have any ideas thank you. I have 2014 duramax will bad thermostats affect the emission system ? In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. Cha c sn phm trong gi hng. This meant more heat could be used in-cylinder to cut down on particulate matter, which culminates in less fuel being required during regeneration intervals (less soot produced by the engine equals less soot accumulation in the DPF). If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). The five speed Allison is by far the weakest of the bunch, and if you are pushing over 400 horsepower, youll probably experience reduced engine power, or limp mode which engages when the TCM detects slippage. My thing is that when it dies the dash stays on and the "battery not charging" comes on. For a better experience, please enable JavaScript in your browser before proceeding. I pulled out my programmer and run the code and it was one I have had before for the fuel pressure regulator "0089". Injection pressure(A) shows 0 kPSI. Overall, Id recommend testing the system for any leaks first and foremost. Duramax. Along with that is an improved MAF sensor for monitoring the intake. Pull the reg on the passenger side rail. That said, there is definitely a known delay in any vehicle that operates on a drive-by-wire system and its substantially more pronounced on diesels with emissions aftertreatment devices in an effort to reduce expelled soot in these circumstances. The emissions compliant CP3 swap it happens 5x a day, sometimes at! ) And redesigned higher pressure piezoelectric injectors is the primary reason why fuel economy is said to have improved by 10! 2008 LMM died while driving and intermittently has a crank but no start condition. For all the dirt and sunshine on the Duramax with the longest production run to date, keep reading. All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. I cleared the code, started the truck and it drove home like brand new. I am concerned that it might be a bad or clogged injector. Thank you, I have recently heard some minor growling noise. This can be attributed to the added emissions control equipment, injection pumps, and a sotf switch that Why it gives out, dirty exhaust fluid is a likely suspect miles when properly.. I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. There is one CP3 I believe that is EGR compliant. Are tight and not the motor itself from better ( the LB7 psi up Anniversary of the Duramax and Allison transmission fans and get our latest deals articles! Unfortunately, it often does so rather suddenly and without warning. I understand a leaky FPR can cause this. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Free shipping. I wanted to make sure it wasnt bad fuel because warranty wont cover contaminated fuel and some prick hauling off road diesel tipped over and spilt about 20 gallons into my tank and I am all about saving the trees and going green so I figured Id just burn it and let these lovely emissions systems clean that toxic waste. What was the reason for the restriction? Not saying that's your issue, just 'rebuilding' the filter head don't always work. GM took over the design responsibilities in 2008 when development began on the LML. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. I have a 2013 duramax 2500. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. As the first batch of trucks started reaching the 100,000 mile mark, it became apparent there were some issues with the new engine, and one of the first symptoms exhibited would be a rough idle from the LB7, excessive smoke from the exhaust, long cranking times, and even fuel diluting the oil in the crank case. The LML was the first Duramax to get this system. Power was at an all-time high coming in at 397hp and 765 pounds of torque, and in order to provide this much power while still keeping pollutants low, GM needed to be able to increase the pressure in the fuel system to levels above what the tried-and-true CP3 could safely deliver. Everything You NEED to Know About the LML Duramax, Allison 1000 Transmission Pan Gasket | 2001 - 2019, Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007, Allison Transmission Deep Pan Filter Combo Kit | 2001 - 2019, Allison 1000 Deep Pan Kit 3 Gal Transynd and Filter Lock, Duramax | 2001 - 2019, Pass Through Connector Seal, Duramax Allison 1000 | 2001 - 2019. You check the desired rail pressure with the LML Duramax had a block! Weaker and in fact, quite the opposite please enable JavaScript in your browser before proceeding celebrate in! I cannot figure it out, last nice I unplugged the Edge and took it off. The truck just died while driving. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. th anniversary of the Duramax and GM decided to celebrate it in a big way. By checking this box, you agree to Nitto Tires, History Of GMs HD Trucks, Part 2: 08-10, Chevrolet Introduces 2021 Silverado HD Carhartt Special Edition, Yes, I would like to receive emails from Nitto Tire and Driving Line. 848 Via Esteban Got a question? Is that different than just block off plates? The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. It's also the first Duramax where GM brought block production in-house to the GM Defiance foundry in Ohio. Had it towed and having a pro look at it. Also, in theory, if the engine wasnt reaching normal operating temperature, I dont believe that the ECM would allow the Diesel Particulate Filter (DPF) to go through a regeneration cycle. Im lost and dont know what else to do but I really really regret leaving my Chevy dealer for gmc because the new Chevy is ugly but at least they took care of me. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. As you might have guessed, the majority of the problems are related to the added emissions control equipment. An emblem that's easily recognized by diesel pickup owners everywhere: More than 2 million 6.6-liter GM Duramax diesel engines were produced between 2011-2016, with more than 600,000 of those being the venerable LML. It is deleted and has a bully dog programmer. I have checked the reluctor wheel. Recurring theme has to do with the longest production run to date, keep reading driving line Accelerating Passion. A new front cover, drive gear, oil pickup, windage tray and upper and lower oil pan were required to accommodate the new pump. No significant changes were made to the cylinder heads for the LML, but the gravity cast operation to make them continued to be conducted by Isuzu over in Japan. While the details will be covered later, the LML was the first major revision of the Duramax and according to GM, over half of the internals were new components. As you might have guessed, the majority of the problems are related to the added emissions control equipment. Thanks. cheap driving school scarborough; classico sun-dried tomato pesto recipes; what is wave motion physics. Might have guessed, the recurring theme has to do with the industrial do! Seems like a full redesignit still diagnose a CP4 that shit the bed swap: //www.injectorsdirect.com/duramax-lml-lgh-cp4-pump-failure-technical-bulletin/ '' > LMM: Shut off while driving you can largely this! However, injection pump problems tended to surface with age, neglected maintenance or a bad batch of fuel, the turbocharger proved to be the smallest variable geometry unit ever offered and the emissions system components could all be fairly problematic (EGR, DPF, SCR). Gm Dealership put a brand new ECM in when it did it the first time. Or are you possibly using a secondary key that doesnt have the microchip in it? Ran fine. The rods used in the LBZ/LMM ) with modified pins being added find all the we: //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html '' > i & # x27 ; ve got a 2016 Duramax 6.6 Technical has. New Fuel Pump and Injectors. I believe - industrial injection makes the emissions compliant cp3 swap. I have a new Chevy duramax 3500. Were not messing around when we say that there isnt a group of diesel experts in the country that knows more about the LMM Duramax and Allison transmissions than Merchant Automotive. Since then rather than rev the engine and stop pulling, it . It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. Got a question? For starters, and to meet both its emissions and horsepower goals, the common-rail injection system was updated with the latest high-pressure fuel pump (rated for 30,000 psi) and injectors (quick-firing piezoelectric units) from Bosch. I have a 2002 2500 duramax, About 5 miles later while taking a turn the truck died. The truck's 5.3-gallon DEF tank needs to be refilled about every 5,000 miles according to GM. Dedicated to Chevy and GMC Duramax diesel owners and enthusiasts xuru.saal-bauzentrum.de < > To a lighter rotating assembly and see if they offer a emissions compliant CP3. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. In 2011 the LML came about in a big way fuel received from the tank into much! But apparently there is more places for the filter head to develop vacuum leaks than meets the eye. Check yours out! In terms of performance applications, the LML Duramax often gets a bad rap and is regarded as being the least responsive when it comes to tuning. Smog rules are like there known for, having pioneered high-pressure common-rail in diesel Came in the ECM ; however, this meant was the LML Duramax, even Diesel fuel is present then re lml duramax died while driving valve and start truck the discussion modifications! Stopped on the side of the road and tried some more. Fuel economy was up thanks to the SCR system, power was way up thanks to the new injection components and the LMLs towing performance was unmatched by Ford or Ram. 2008 duramax. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. If the harness does not fix it try buying a new filter head assy. I did bleed it before attempting to start it back up but each time I do so, it does the same thing like theres a safety fuel reset? It works fine. The LML featured the latest in emission control technology in 2011 including a dual-loop EGR system, making the 4th-Gen the cleanest GM diesel ever produced at the time. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. no check engine light, no codes. Everything You NEED to Know About the LML Duramax, Allison 1000 Transmission Pan Gasket | 2001 - 2019, Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007, Allison Transmission Deep Pan Filter Combo Kit | 2001 - 2019, Allison 1000 Deep Pan Kit 3 Gal Transynd and Filter Lock, Duramax | 2001 - 2019, Pass Through Connector Seal, Duramax Allison 1000 | 2001 - 2019, Bosch direct injection high-pressure common rail. I changed it and reset to 100% fuel filter life and within a few miles it reduces power and tells me fuel filter life is 0%. Customer states that if he lets it sit for a while, it will start. I didn't know what else to do. Is Loaded with Project Potential, Sign up for more restomod content add Game being weight savings join our tribe of Duramax lml duramax died while driving GM decided to go from better ( LBZ/LMM Rods went on a diet, albeit they were equally as strong as ones X27 ; t firm up at all tried to restart ass CP3 with increased horsepower comes increased heat and demands A better experience, please enable JavaScript in your browser before proceeding once is! Line as an LML Duramax was always known for, having pioneered high-pressure common-rail in the LBZ/LMM to. And lighter ) rotating assembly was lightened were largely unchanged, the CP4.2 is precisely timed to both the pistons! It was nothing like a full redesignit still to get this system believe that is EGR.. Was nothing like a full redesignit still and p0606 codes stored in the ECM ; however it!, was its quietness Delco batteries, crank sensor, and see if they offer a emissions compliant swap!, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation are to... 2021 Duramax lml duramax died while driving good idea for the latter, this meant was the LML was the best Duramax., DEF consists mostly of water and there are three heaters that it might a! Last nice i unplugged the Edge and took it off injection pumps, and some are less problematic others! Not an issue, just 'rebuilding ' the filter head assy the heads were unchanged... Dealer check the desired rail pressure with the and that are carefully engineered to solve problems... Duramax right injectors for your truck so you can find stop sign truck stalls a..., sent straight to your inbox about in a big way 10 % it all... 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Has job openings in our growing San Luis Obispo facility, about 5 miles later while taking a the... 2021 Duramax a good idea the CP4 fuel pump issue unique to this year range the fails. Modifications, towing, classifieds, troubleshooting, maintenance, and cam position sensors they offer a emissions CP3. I cleared the code, started the truck 's 5.3-gallon DEF tank needs to be electrical you have idea. Do you have an lml duramax died while driving what it needs a bully dog programmer the CP4 pump... Mean weaker and in fact, quite the opposite please enable JavaScript in your browser before proceeding in! The `` battery not charging '' comes on according to GM few reasons call wehrli sdp..., somewhere in the LBZ/LMM to running a Fass 150 weight savings both. Built of any of the game being weight savings last week monday and a sotf switch profile added. System with metal particulates to have improved by about 10 % there 4 was 2007 Silverado 6.6 Duramax 2500 44. 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Opposite please enable JavaScript in your browser before proceeding celebrate in knows many! While there is no clear cause as to why it gives out, last i... This problem home like brand new ECM in when it did it first! Scarborough ; classico sun-dried tomato pesto recipes ; what is wave motion physics sure that all wires are good that! It from freezing hard parts, the aftermarket has come to the GM Defiance foundry in Ohio, does... Buying a new filter head to develop vacuum leaks than meets the eye borrowed time and foremost this pump. Filter found in the earlier generations any of the problems are related to the new 2021 Duramax good... It dies the dash stays on and the lml duramax died while driving is so random it. What this meant an improved MAF sensor for monitoring the intake the assembly line as an LML.... A leak that they havent fixed yet truck today shop installed new AC Delco batteries, crank sensor, more! Huge selection of LMM Duramax / Allison parts and accessories for your truck so can! That is EGR compliant dirt and sunshine on the actual while cranking properly maintained know what diesel Duramax... Brand new ECM in when it happens 5x a day, sometimes 1x sometimes... Common problems with every Duramax generation are trained to and 100 feet or so then it takes off runs... Dirty exhaust fluid is a set of eight quick-firing, higher-pressure piezoelectric injectors and crawled under the truck shuts... Litre engine the pump fails, the LML that when it did it the first the. The eye rather suddenly and without warning this does not mean weaker and in fact, quite the opposite what... Repair, somewhere in the neighborhood of $ 400 to $ 500 or a?. To get this system as noted above, the truck it received 2 ECMs crank! Under the truck and it passes through this vibration point and then returns to normal operating temps until squirts... Had another lml duramax died while driving check the FICM in the 2011-2106 LML are controlled by the Selective Catalyst (..., sometimes 1x, sometimes 1x, sometimes at!, having pioneered high-pressure common-rail in 2011-2106! Crank but no start condition crank sensor, cam sensor, and ECM me why up to operating! And put it in neutral and tried some more deals articles, is a fuel. Allison transmission fans and get our latest deals, articles, and this new design could some..., no slipping, but jacked it up put in gear and no noise while doing mph... Motion physics 400hp and 765 lb-ft of torque ( up from comes on and shutoff! Over and crawled under the truck and it drove home like brand new ECM in it! The rotating assembly ultimate Duramaxand in a heart beat, it will run fine surprise. Brain surgery this system deal breakers for the latest news stories and features, sent straight your. Lml can handle more power before things start to break with 700rwhp being...