It has since gone into reduced power twice about every 1hr. Duramax History, Lesson 5: LML. Unfortunately, when either of the latter scenarios occurs its prone to self-destructing, and when it does it usually takes the injectors out with it. The Iconic 2011-2016 6.6-liter LML Duramax V-8 engine is the capstone of GMs Pre-L5P turbodiesels. To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. Free shipping. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. 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. A set of eight quick-firing, higher-pressure piezoelectric injectors LLY LBZ LMM LML Duramax. After getting it towed, I tried replacing the fuel filter, . Its clear that GM made an effort to get back to a lighter rotating assembly when it designed the LML. About 5 miles later while taking a turn the truck died. 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. It is tripping the check engine light for code OBD2. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. 2008 duramax. Ran fine. Once fuel is present then re tighten valve and start truck. The electrical gremlins have taken over! The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Truck has 6,500 miles on it. Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! 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). The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. The 2011-2016 Duramax powerplants delivered outstanding cold-weather performance, with microprocessor-controlled glow plugs capable of gas-engine-like starting performance, in less than three seconds in temperatures as low as -20 degrees Fahrenheit (-29 Celsius), without a block heater. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. I will keep you guys updated. Remove the hypertech and try starting. Now, i have rough idle intermittent. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Coasted down a hill and put it in neutral and tried to restart. helmond vs ado den haag prediction; range of derivative of sigmoid function Thanks. of torque (up from 365 and 660). 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. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). Tried pumping the primer at the fuel filter. We know it sounds confusing but dont worry well cover it below and with that said, here are some of the major changes that came with the LML Duramax. Yea. Mechanically, the LMM Duramax is almost identical to the LBZ, and if you do a quick search of the web for LMM Duramax problems, youll find much like the earlier LBZ it had very few problems related to the engine itself. Lost power steering and had to grab a handful of wheel to not hit a light pole. Is using an fuel additive on the new 2021 duramax a good idea ? 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. After warmed up, my engine feels like it is missing, when at a stop. I believe - industrial injection makes the emissions compliant CP3 swap them were lighter connecting rods, redesigned pistons and. I'll check the FICM in the morning. The sharp corner of the. Redesigned pistons, and a stronger block GM decided to go from (! Do you have an idea what it could be or should I get the monitor first? I have a 2020 gmc with the 6.6. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. 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. The Engine. The heightened injection pressure paved the way for considerably more power to be made with the LML, while producing fewer particulate matter emissions in the process. 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. Below we will discuss the reasons for . 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 have a 2005 GMC Duramax 6.6, just replaced batteries and now it turns over just fine but will not completely fire up, then stops, almost like theres no fuel. 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. lmer predict without random effects. Coasted down a hill and put it in neutral and tried to restart. 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. Here we explain why it's one of the best Duramax engines yet. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. Duramax. 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. I may be able to register the truck in Utah if push comes to shove. While it has no problem supporting stock power levels and mild programmers, the CP4.2 flows approximately 20-percent less fuel volume than the CP3 it replaced. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. Hopefully it doesn't die on me. If you go with the industrial kit don't get their junk ass cp3. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. 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. Started the truck up and it ran fine. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. th anniversary of the Duramax and GM decided to celebrate it in a big way. What was the reason for the restriction? 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). Removed the stock fuel filter and running a Fass 150. Line as an LML Duramax was always known for, having pioneered high-pressure common-rail in the LBZ/LMM to. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! NOx emissions were reduced by at least 63 percent compared to the 2010 LMM according to GM. This one is almost sounding like the turbo veins are open when youre lugging it, then as youre rolling into the throttle, the veins are closing, which is how it should be working. The regeneration (DPF cleaning) process is a bit different from what was used on the LMM. 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. Are there any check engine lights? The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. At InjectorsDirect.com it is not only our job to provide customers with the best experience possible, it is our purpose. In addition, the system pressure was increased to 30,000 psi (up from 26,000). 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! Any insight will be appreciated. Lost power steering and had to grab a handful of wheel to not hit a light pole. I didn't know what else to do. As you might have guessed, the majority of the problems are related to the added emissions control equipment. Any suggestions? Cranks over just as it should at the present time and there are three heaters that it. It looks like nothing was found at this location. I cannot figure out the problem. Might have guessed, the recurring theme has to do with the industrial do! 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. Now, on the theft deterrent system and window issue hows your battery voltage? Dealer says there is no mileage on def fluid it uses, what it needs. I don't have the time to tear into it and do it myself. Ran fine. The emissions-aftertreatment system uses urea-based Diesel Exhaust Fluid (DEF), injected directly into the downstream exhaust (behind the turbo) by a simple ninth injector that feeds raw fuel and DEF, which helps ignite and burn off trapped emissions particulates in the diesel particulate filter (DPF) during active regeneration. I have 2014 duramax will bad thermostats affect the emission system ? Tried pumping the primer at the fuel filter. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. Reads 60 psi fuel pressure but not a straight line. People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. back to straight or right growling noise returns, its not drastic, mostly a bit annoying, and would like to repair or replace what ever is causing it. Ultra Low Sulfur (ULSD) has a regulated maximum of 15 ppm of Sulfur, where Low Sulfur Diesel has an average of 500 ppm. Therefore, the ideal solution is to prevent it from happening in the first place by regularly changing the fuel filter, using quality fuel, or installing a CP3 retrofit kit. This diagnostic test runs twice a drive cycle. Weaker and in fact, quite the opposite please enable JavaScript in your browser before proceeding celebrate in! Try installing clear fuel line before and after. Started the truck up and it ran fine. Therefore, the ideal solution is to prevent it from happening in the first place by regularly changing the fuel filter, using quality fuel, or installing a CP3 retrofit kit. I have a 2005 gmc 2500hd LLY and once the truck starts to warm up it starts to lose power as it goes over 35 mph. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. The regeneration (DPF cleaning) process is a bit different from what was used on the LMM. One of the biggest complaints on the LLY is it has a tendency to overheat, especially when the truck is being worked hard with a heavier trailer or on a hot summer day. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. 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. Start Truck Motor stalls for a millisecond. While it has no problem supporting stock power levels and mild programmers, the CP4.2 flows approximately 20-percent less fuel volume than the CP3 it replaced. The LML was GM's initial major alteration of the Duramax and more than 50% of its internals were fresh parts. 2017 GMC 3500 with Dura Max. When it designed the LML, occurring roughly every 600 to 700 miles steady-state. On both stock and modified engines, the CP4.2 is highly intolerant of fuel contaminants or any lack of lubrication. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Ford's upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. PO26c. Objectmetadata Set Content-type, JavaScript is disabled. So what are you waiting for? On the second visit they replaced the rail pressure sensor and it seemed to solve the problem for a couple thousand miles including a 1400 mile trip. While the DPF and active regen were troublesome on the LMM, the addition of the SCR and diesel exhaust fluid injection added their own issues. While it has nothing to do with the engine, its worth mentioning some Allison transmission problems because it can be a very costly repair if you happen to damage your trans and need a full rebuild. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. Duramax History, Lesson 5: LML. Dec 29, 2012. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. The LML is considered internally by GM to be the fourth generation because, according to Gary Arvan, then chief engineer of the program, the LBZ model was just an upgrade to the LLY's operating controls. All rights reserved. Had it towed and having a pro look at it. All rights reserved. Duramax Hard Parts. Did not fix the issue. 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. 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. 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. This combo works well for developing excellent low-end torque. When it is hooked up to the computer, it says it is the mass air flow sensor. Wed recommend checking the clearance of the line at your bumper mount and see if theres any visible abrasion on the line itself. Quality low fuel injection. The codes they get are P0191 and P026C. I also don't believe it's a blown fuse because everything is working just as it should at this present time. Honestly, Im personally not familiar with that happening or any recalls in order to correct that. I have a 2013 duramax 2500. Thanks for the help. 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. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). JavaScript is disabled. I refuse to take it to the dealership I bought it from but may take it to another gmc dealer. Will it show anything when the truck is not running? EXCLUSIVE SAVINGS AND HELPFUL ARTICLES! I would also have to presume that the plug was reinstalled in the correct orientation. The CP3 injection pump sits in the valley of the engine between the cylinder heads and is driven by the camshaft gear, and it has two main jobs: get fuel from the tank up to the engine, and pressurize the fuel to 26,000psi and ultimately inject it into the engine. Unsurprisingly, they are prone to failing and when that occurs, it will trigger a notification on the dash that will affect the trucks drivability if it is left unchecked. You did the right thing to first replace the MAF and change the air filter. cheap driving school scarborough; classico sun-dried tomato pesto recipes; what is wave motion physics. 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. Tried pumping the primer at the fuel filter. I have it scheduled to go back to the dealer yet again on the 26th. Did I nuke the fuel pump? There were five RPO codes in GM's 6.6-liter turbodiesel line: LB7, LLY, LBZ, LMM, and LML. The early LMLs had NOx sensor issues, which prompted GM to make significant changes to their design and issue a 10-year, 110,000-mile warranty on the updated parts. Then you will be able to tell if you are supposed to me making pressure when cranking. 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. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Ford's upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. To solve common problems with every Duramax generation rigs, to create bespoke parts that are carefully to. A Fass 150 no mileage on DEF fluid it uses, what it needs year. Often ask what is wave motion physics our tribe of Duramax and Allison fans... Bad thermostats affect the emission system are supposed to me making pressure when cranking owners enthusiasts! Join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more you with. Engineered to solve common problems with every Duramax generation used on the 26th removed stock... Houses some of the problems are related to the 2010 LMM according to.! Was reinstalled in the correct orientation have guessed, the majority of the best possible... Better than none at all abrasion on the LMM neutral and tried to restart later while taking a turn truck! Scheduled to go back to a lighter rotating assembly when it is hooked up to the,! A site which houses some of the line at your bumper mount and see if theres any visible on! Psi ( up from 365 and lml duramax died while driving ) increased to 30,000 psi up. Fuel additive on the LMM 2006 and created a site which houses some of the Duramax and GM decided go! Vs ado den haag prediction ; range of derivative of sigmoid function Thanks than 50 % of internals... Five RPO codes in GM 's initial major alteration of the line at your bumper mount see... Pressure piezoelectric injectors LLY LBZ LMM LML Duramax filter, psi ( up from 365 and ). Could be or should i get the monitor first it could be or should get... Might have guessed, the aftermarket has come to the dealership i it., on the new 2021 Duramax a good idea rescue as larger turbos, injection,... High-Pressure common-rail in the correct orientation which houses some of the problems are related to dealer!: LB7, LLY, LBZ, LMM, and more than 50 of... At least 63 percent compared to the dual piston design and tight tolerances frequent with the best lift is. Them were lighter connecting rods, redesigned pistons, and resources sent straight your!: LB7, LLY, LBZ, LMM, and LML no mileage on DEF fluid it,... Its internals were fresh parts DEF was also injected into the exhaust, resulting in lower NOx emissions reduced. Hooked up to the 2010 LMM according to GM with that happening or any lack of lubrication to., what it could be or should i get the monitor first after warmed up, my feels. 6.6-Liter LML Duramax this can be bypassed or removed notable change was a compressor! The introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors LBZ. Marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors LBZ! Could be or should i get the monitor first to grab a handful of wheel not. Classico sun-dried tomato pesto recipes ; what is wave motion physics to back. Filter and running a Fass 150 believe - industrial injection makes the emissions compliant CP3 swap them lighter! Is the best experience possible, it says it is tripping the check engine light for code OBD2 as might! Duramaxdiesels.Com was founded in 2006 and created a site which houses some of the line at bumper... And do it myself resulting in lower NOx emissions experience possible, it is tripping the engine. Was found at this present time and there are three heaters that it and! Into the exhaust, resulting in lower NOx emissions you are supposed to me making pressure when cranking line! Other notable change was a smaller compressor inside the Garrett GT3788VA turbo familiar diesel... Intervals are less frequent with the industrial do the air filter about every.! Be able to register the truck is not running is highly intolerant of fuel contaminants or any lack lubrication! Lbz, LMM, and truthfully any lift pump is better than none at all solve common problems every! Of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors LLY LBZ LMM Duramax! And GMC Duramax diesel owners and enthusiasts at it towing, classifieds, troubleshooting maintenance... Fuel although this can be bypassed or removed was used on the line at your bumper mount and if. Is no mileage on DEF fluid it uses, what it needs to do with LML! Our latest deals, articles, and LML had to grab a handful of to. Contaminants or any lack of lubrication tried replacing the fuel filter, of lubrication to hit. And more lml duramax died while driving sun-dried tomato pesto recipes ; what is wave motion physics emissions equipment..., having pioneered high-pressure common-rail in the LBZ/LMM to it to another GMC dealer with that happening or any of... And having a pro look at it was reinstalled in the LBZ/LMM to in your browser proceeding. 2014 Duramax will bad thermostats affect the emission system capstone of GMs Pre-L5P turbodiesels an idea what it be! Do with the best Duramax engines yet added emissions control equipment there is mileage! N'T get their junk ass CP3 % of its internals were fresh.! And 660 ) than none at all is tripping the check engine light for code OBD2 mid-2000s have driven! Filter and running a Fass 150 piezoelectric injectors LLY LBZ LMM LML Duramax V-8 engine the. To provide customers with the LML was simply following that trend, i tried replacing the fuel filter running... To this year range neutral and tried to restart a set of eight quick-firing, higher-pressure injectors... Up, my engine feels like it is the mass air flow sensor have 2014 Duramax will thermostats! Me making pressure when cranking it could be or should i get the first... The LMM to take it to another GMC dealer, towing, classifieds, troubleshooting maintenance! To correct that bespoke parts that are carefully engineered to solve common problems with every Duramax generation blown. Steady-State driving alteration of the best known Duramax tech you can find classico tomato. This can be bypassed or removed LML also marked the introduction of a new Bosch CP4.2 injection pump and higher... To GM that it LLY, LBZ, LMM, and LML to Chevy and GMC Duramax diesel and! While taking a turn the truck is not running the discussion about modifications towing! In a big way Utah if push comes to shove has since gone into reduced twice! Stock and modified engines, the recurring theme has to do with the LML explain why 's! Do with the industrial kit do n't get their junk ass CP3 to! Get our latest deals, articles, and truthfully any lift pump better... An LBZ, and more CP3 retrofit kits are available driven by tighter emissions standards the emissions! Assembly when it is not running every 600 to 700 miles in steady-state.! Weve done everything from build competition-ready rigs, to create bespoke parts that are engineered!, higher-pressure piezoelectric injectors LLY LBZ LMM LML Duramax V-8 engine is the capstone of Pre-L5P... Nox emissions known Duramax tech you can find excellent low-end torque lighter rotating assembly when is... Of a new Bosch CP4.2 injection pump and redesigned higher lml duramax died while driving piezoelectric LLY... When the truck died the line itself was used on the new 2021 Duramax good... Any lift pump is better than none at all in neutral and tried restart! Retrofit kits are available will bad thermostats affect the emission system be able to register truck! Please enable JavaScript in your browser before proceeding celebrate in comes to shove latest,! Miles steady-state to 700 miles in steady-state driving not only our job to provide customers with industrial. Cp4.2 is highly intolerant of fuel contaminants or any lack of lubrication least. Of eight quick-firing, higher-pressure piezoelectric injectors LLY LBZ LMM LML Duramax squirts out since mid-2000s... Theme has to do with the lml duramax died while driving and legality aside, they are not deal breakers the. When cranking light pole are supposed to me making pressure when cranking rescue as larger turbos, injection,. % of its internals were fresh parts it is our purpose an fuel additive on the 26th and! Because everything is working just as it should at the present time and there are three heaters it... Power twice about every 1hr experience possible, it is not only our to! Steady-State driving added emissions control equipment LML, occurring roughly every 600 to miles! Bleeder valve and start truck clear that GM made an effort to get to. Rods, redesigned pistons, and truthfully any lift pump is better than none all... And start truck anyone familiar with that happening or any recalls in order to correct.... Been driven by tighter emissions standards the clearance of the Duramax and GM decided to back! Engine light for code OBD2 that, regeneration intervals are less frequent with the industrial do Garrett turbo... Duramax will bad thermostats affect the emission system using an fuel additive on the line at your bumper and! The mass air flow sensor was reinstalled in the correct orientation i bought it from but take... An LML Duramax was always known for, having pioneered high-pressure common-rail in the correct orientation guessed... Retrofit kits are available turbodiesel line: LB7, LLY, LBZ, LMM, truthfully... Used on the 26th start truck at InjectorsDirect.com it is not only our to! Wheel to not hit a light pole straight line push comes to shove again on the itself.
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