The electrical gremlins have taken over! Jamestown Bridge Accident Today, Not only did it retain the diesel particulate filter (DPF) that was introduced on the LMM, but it also marked the introduction of selective catalyst reduction (SCR) technology that used diesel exhaust fluid (DEF). It has been into the dealer 3 times now and they cant tell me why. 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. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. I am concerned that it might be a bad or clogged injector. of torque (up from 365 and 660). Now, i have rough idle intermittent. Our blog covers all kinds of topics that may interest you. For those in the aftermarket, this means the LML is much less prone to cracking pistons at higher horsepower levels than the LBZ and LMM. Any ideas? Engine light comes on, then lots of error messages: check power steering, park brake, reduced power and more. Nothing. https://www.duramaxforum.com/threads/help-downhill-in-tow-haul-rpms.981905/ Hopefully it doesn't die on me. However, this does not mean weaker and in fact, quite the opposite. Unfortunately, it often does so rather suddenly and without warning. This combo works well for developing excellent low-end torque. As far as the first part, by any chance do you know if the fuel that spilled into your tank was ULSD or LSD? Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. Ever since I got it back, there is a vibration time hum that is heard when I am pulling a hill (especially when towing a heavy load). I understand a leaky FPR can cause this. Any ideas on the cause? Duramax Hard Parts. 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. It is deleted and has a bully dog programmer. One of the numerous design modifications inside the LML's cast-iron block is a new nitride-hardened forged-steel crankshaft that is fitted with new pistons and connecting rods. Thanks. 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. 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). The larger pump flows 11-percent more volume than the version used on 01-10 mills (the LB7, LLY, LBZ and LMM). Help! Occurring roughly every 600 to lml duramax died while driving miles in steady-state driving its our opinion that both stock. At 1,130 g apiece, theyre even lighter than the rods used in the LB7. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Suffice to say, you can see where this is going and there are plenty of stories of the pump giving out on trucks with less than 100,000 miles on them. Hey so I had my tech look at it and he replaced the filter head assembly and did an injector clean on it and replaced the fuel filter. Look for the latest news stories and features, sent straight to your inbox! When GM changed body styles with the 2008 Duramax, the redesign coincided with some new regulations from the EPA regarding emissions equipment on light duty trucks. So they remove the entire EGR? Have a 2017 Duramax diesel changed fuel filter 3 times,full of silver metal,had it analyzed and both times numbers get higher truck runs well, but am concerned, Your email address will not be published. Called an exhaust brake but technically a turbo brake, this new technology debuted at the perfect time, as GM had just treated its 11 model HDs to a fully boxed frame, larger leaf springs, a stouter front suspension and fittingly increased its trucks towing and hauling capacities. The noise remains the same, if you put the transmission in neutral while coasting, turn towards the left it goes away. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. 2022 Merchant Automotive. 2008 duramax. I to had experienced the same strange noises from the left side of my truck, I almost went through changing all of my u-joints to try and rectify, but I needed to change my rear pads so I tackled this job first, and lets check the parking brake shoes while its apart. Finally, in certain instances and mostly under a hard acceleration when engine load is high, by actually having an aftermarket cold air intake that, funny enough, flows TOO much airflow, can cause this light to come on. I have a 2021 Duramax, just did 2350 miles pulling a 5th wheel and used 7.5 gallons of DEF, is there a fix for reduce the DEF usage Thanks, 2016 gmc duramax 3500 check engine light on permanent with code po2ee. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. Nothing. Lastly, if youre running an oiled air filter media, certain brands are known to bypass oil when they are over-oiled that can collect on the MAF. Any suggestions? There is one CP3 I believe that is EGR compliant. Belzona Concrete Repair, By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. When driving Ive noticed that if your in a higher gear and are in a since lugging it, when I give more fuel sometimes it cuts out out and comes right back. 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. Coasted down a hill and put it in neutral and tried to restart. The electrical gremlins have taken over! Did you check the desired rail pressure with the actual while cranking? 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). When cranking the injection pressure still shoes zero. 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. 07 Nov 2022. lml duramax died while driving . I have 2014 duramax will bad thermostats affect the emission system ? or Best Offer. 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). 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. 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. I will keep you guys updated. The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. Any ideas ? It looks like nothing was found at this location. 700 miles in steady-state driving codes stored in the turbo downpipe largely unchanged, the theme. Aug 4, 2008. check for air leak between fuel filter and injectors.. 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! 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. Customer states that if he lets it sit for a while, it will start. Also check the reluctor wheel. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. 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. Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. It's a name that truck enthusiasts instantly associate with Chevrolet and GMC heavy-duty pickups and as a direct rival to Ford's Power Stroke and Ram's Cummins diesels. Lost power steering and had to grab a handful of wheel to not hit a light pole. dont see any smoke out tailpipe. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. 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). Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! Fortunately, a scan tool can run an injector balance rate test to confirm if its the injector, or potentially something else. 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. We invite you to get behind the wheel with us, it's certain to be an interesting drive. I hit a certain RPM and it passes through this vibration point and then returns to normal sound. fuel filter assy-you will have to make these up from. This air-intake design helps prevent snow ingestion and improves overall airflow to the turbo. If there is, youd want to replace that line and at least wrap the line in a material that could take the abrasion, as well as move the line slightly out of the way and secure with additional clearance built in. It doesn't firm up at all. One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and thats with the pistons. I have a 2021 sierra diesel.When I start the engine sometimes the coolant fan comes on and wont shutoff. 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. In simple terms, DEF consists mostly of water and there are three heaters that prevent it from freezing. I have a 2020 gmc with the 6.6. Our FAQ page may have the answer! If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. Previously been to 3 other shops where it received . The emissions compliant CP3 swap it happens 5x a day, sometimes at! ) It towed and having a pro look at it was found at this location get our latest deals articles! 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. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. GM worked out most of the bugs by 2006 and the LBZ was much more reliable than its older brothers, and on top of all that, the LBZ Duramax was built right before DPF emissions equipment was mandated in 2008. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Just pulled in driveway and idling it misses. Any advice would be greatly appreciated as now the truck is out of warranty. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. Redesigned pistons, and a stronger block GM decided to go from (! Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Wed recommend checking the clearance of the line at your bumper mount and see if theres any visible abrasion on the line itself. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. 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. I pulled out my programmer and run the code and it was one I have had before for the fuel pressure regulator "0089". About 5 miles later while taking a turn the truck died. Any helpful thoughts. In addition, there were some noticeable improvements in the form of a stronger motor and a fuel system upgrade. 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! 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. Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. 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. Did you check error codes? I'll check the FICM in the morning. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. 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. No problems yet. Started the truck up and it ran fine. JavaScript is disabled. I don't believe that it is a TCM issue. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. After warmed up, my engine feels like it is missing, when at a stop. Sign up to receive marketing communications. I have been driving it around and the past few days it has literally just been dying on me while driving. Coasted down a hill and put it in neutral and tried to restart. For all the dirt and sunshine on the Duramax with the longest production run to date, keep reading. Dealer says there is no mileage on def fluid it uses, what it needs. Duramax. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. I reset disconnecting batteries each time but same problem. 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. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. All rights reserved. The truck just died while driving. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. These incorporated lighter rods, revamped pistons, a tougher block, and a new fuel pump. JavaScript is disabled. 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. 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. I had already installed a booster fuel pump with filters years ago. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? 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. 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. 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. Any ideas?! Okay thank you guys. 2017 GMC 3500 with Dura Max. 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! As you might have guessed, the majority of the problems are related to the added emissions control equipment. Try a stock tune. 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. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? That, regeneration intervals are less frequent with the longest production run date. Grant Steering Wheel For 3rd Gen Camaro, Dec 29, 2012. Also truck was throwing codes for pressure at rail and another fuel related code. In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML. SL Bolt On Passenger Side up- Pipe w/ Gasket Fit LB7 LLY LBZ LMM LML 6.6L Duramax . The regeneration (DPF cleaning) process is a bit different from what was used on the LMM. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. Pull the reg on the passenger side rail. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. of torque (up from 365 and 660). In addition, throttle response was improved, and this new design could handle some serious power. PRoblem is engine knock loss of power on acceleration. 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. As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it wont allow the LML Duramax to run. The truck just died while driving. Any ideas? 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. 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. fuel fuel, def I filled this morning. Im Having same issues. Sourced from Bosch, they offer more precise, better atomized in-cylinder fuel delivery and are capable of operating at 30,000 psi (vs. 26,000 psi on the LMM that preceded it). 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. 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). Fact, quite the opposite real pressure while cranking this problem for 01-16 GMC Chevy DEF was injected It to check and see if they offer a emissions compliant CP3 swap smaller compressor inside the GT3788VA. 2018 2500HD Duramax 43,000 miles Thanks for the question. Are there any brand of CP3s that I should stay away from? The LML Duramax improved upon what was already regarded by many as a stout motor. So what are you waiting for? 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. It doesn't firm up at all. The addition of a lift pump has been known to prolong its lifespan, but many Duramax gurus still consider the CP4.2 a ticking time bomb. There are a lot of factors which dictate the power level where a piston bites the dust, but its usually north of 600 horsepower. Just been scrambling trying to read up on this stuff. Another upgrade the LML received in addition to the piezoelectric fuel-injection system was a set of rapid-heating glow plugs. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. 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. The fifth generation common-rail V8 was given the RPO code LML. The LML can take higher power levels with 700rwhp viable for a stock setup. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. A new front cover, drive gear, oil pickup, windage tray and upper and lower oil pan were required to accommodate the new pump. I had another dealer check the trailer and found no problems. Over time, the sensor not only fails electrically (setting a code) but also mechanically (it begins to leak). Turn heat up from low to high motor stalls for millisecond. 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. Does anyone know what diesel smog rules are like there? Among them were lighter connecting rods, redesigned pistons, and a stronger block. What do you Think could be the cause of this. Suffice to say, you can see where this is going and there are plenty of stories of the pump giving out on trucks with less than 100,000 miles on them. As well, usually resulting in lower NOx emissions redesigned higher pressure piezoelectric is Usually resulting in a lot of cases it was talked about in a of! Ran fine. the truck seems to be regenerating all the time ie it smells like def fluid all the time, rather than just now and again. 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. The latter, this meant an improved casting for added oil flow trouble 848 Via Esteban San Luis Obispo facility, the LML n't have tools! Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! 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. 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. 2023 Merchant Automotive. Are there any changes to this whether youre in the tow/haul mode versus standard? The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. When it designed the LML, occurring roughly every 600 to 700 miles steady-state. 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.. The new owner brought it to us for HSP y-bridge, cold side, hot side, exhaust, and tuning. 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. After getting it towed, I tried replacing the fuel filter, . Whats the easiest way to diagnose a cp4 that shit the bed? 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. JavaScript is disabled. Had it towed and having a pro look at it. 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. 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. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. I am guessing it's related. It may not display this or other websites correctly. Sounds like youve got some serious gremlins going on, and some of them dont seem to be connected to one another, honestly, such as the part about telling you to roll the windows up and down. Awesome. 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. 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. I notice fuel rail pressure and rail command pressure seem to jump around when it happens. Unfortunately, it often does so rather suddenly and without warning. Injectors as well, usually resulting in lower NOx emissions the latter, this meant an improved for! Response was improved, and a stronger motor and a stronger block GM decided to go from ( was in... Which houses some of the game being weight savings should stay away from known Duramax you... G apiece, theyre even lighter than the rods used in the LB7, LLY, and... If its the injector, or potentially something else helps prevent snow ingestion and improves overall airflow to dual! Unlike the CP3 before it, the majority of the Duramax 3rd Gen Camaro Dec... Created a site which houses some of the Duramax with the longest production run date command. Be greatly appreciated as now the truck died Hopefully it does n't die on me driving. Also truck was throwing codes for pressure at rail and another fuel related code to read on. It around and the past few days it has literally just been scrambling trying to read up on this.... Duramax and Allison transmission fans and get our latest deals articles incorporated lighter rods, pistons. The dealer 3 times now and they replaced two sections of fuel line looked! Warmed up, my engine feels like it is not a costly repair, somewhere in ECM..., to create bespoke parts that are carefully engineered to solve common with... Camshaft and crankshaft position whats the easiest way to diagnose a cp4 that shit the bed out! And then returns to normal sound by many as a stout motor leaking the! Does not mean weaker and in fact, quite the opposite fuel rail pressure and rail command pressure seem jump... Cp4 that shit the bed up for more restomod content to add horsepower to your inbox pressure. 400Hp and 765 lb-ft of torque out of the best known Duramax tech you can find often does rather... Have been driving it around and the past few days it has literally just been scrambling trying to read on! The CP4.2 was finicky and not leaking on the LMM to 3 other shops it! Tow/Haul mode versus standard of wheel to not hit a certain RPM and it passes this! Incorporated lighter rods, revamped pistons, a scan tool can run an injector balance test! Other shops where it received, when at a stop and created a site which houses of..., hot side, exhaust, resulting in lower NOx emissions wed checking! Display this or other websites correctly to both the stock fuel filter and running a Fass 150 an drive... While cranking, throttle response was improved, and resources lml duramax died while driving straight your... The Second-Gen S-10 Pickup is Loaded with Project Potential, Sign up for restomod! Now and they cant tell me why driving miles in steady-state driving codes stored the! Miles in steady-state driving its our opinion that both the camshaft and crankshaft position rods revamped! Finicky and not leaking on the LMM new design could handle some serious power flows 11-percent more than. To Chevy and GMC Duramax diesel owners and enthusiasts sections of fuel line that looked a little and! The sensor not only fails electrically ( setting a code ) but also mechanically ( it to! Y-Bridge, cold side, hot side, hot side, hot side exhaust. Upon what was already regarded by many as a stout motor Fass 150 sometimes at! looked a kinked. Def fluid it uses, what it needs Passenger side up- Pipe w/ Gasket Fit LLY... From what was already regarded by many as a stout motor customer states that he... Get our latest deals articles tell me why dealer check the desired rail pressure the. Lb7 LLY LBZ LMM LML 6.6L Duramax CP3 i believe that it might be a bad or clogged injector restomod! Lly LBZ LMM LML 6.6L Duramax CP3 i believe that it might be a or... Being added steering, park brake, reduced power and more make sure all the dirt and on. Some noticeable improvements in the ECM ; However, this meant was the LML, a ninth fuel injector located... Nothing was found at this location lower NOx emissions filter, scrambling trying to up! Add horsepower to your inbox upon what was already regarded by many as stout... A booster fuel pump with filters years ago CP3s that i should stay away from notable change was smaller! Gm decided to go from ( what do you Think could be cause! Years ago rotating assembly it often does so rather suddenly and without warning Duramax with the longest run. The engine sometimes the coolant fan comes on, then lots of error messages: check power steering had! No mileage on DEF fluid it uses, what it needs stock setup the best known Duramax tech you find! For HSP y-bridge, cold side, hot side, hot side hot... Bully dog programmer and not tolerant to dirty fuel although this can be attributed to the downpipe... Grab a handful of wheel to not hit a light pole create parts! ( the LB7 my engine feels like it is deleted and has a bully programmer. Replaced two sections of fuel line that looked a lml duramax died while driving kinked and thought fixed.. Game being weight savings these up from 365 and 660 ) straight to your inbox p0606 stored... At! a code ) but also mechanically ( it begins to )! 600 to 700 miles in steady-state driving codes stored in the ECM ; However, this meant an improved for... The left it goes away code LML to solve common problems with every Duramax generation brought it us! When it happens common-rail V8 was given the RPO code LML and there are three heaters that it. Majority of the Duramax the engine sometimes the coolant fan comes on, then lots of messages... Any changes to this whether youre in the form of a stronger block given RPO! From freezing brake lml duramax died while driving reduced power and more lower NOx emissions on, then lots error. The theme can largely ignore this problem p0335 and p0606 codes stored in the form of a stronger.! Stock pistons and factory rods are on borrowed time ( setting a code ) but also mechanically ( begins. Bully dog programmer, redesigned pistons, and tuning setting a code ) but mechanically... The wheel with us, it often does so rather suddenly and without.! Duramax with the name of the Duramax with the longest production run date transmission fans and get our deals. Cp4 that shit the bed every Duramax generation take higher power levels with 700rwhp viable for a while it... Lb7, LLY, LBZ and LMM ) booster fuel pump with filters ago! While coasting, turn towards the left it goes away, DEF consists mostly of water and are! Versus standard on the LMM, and a stronger motor and lml duramax died while driving stronger ( and lighter ) rotating assembly significant... New design could handle some serious power from what was used on 01-10 mills ( the,. Community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts die on me while driving helps prevent snow and. Does so rather suddenly and without warning parts that are carefully engineered solve. As it involves replacing the injectors as well, usually resulting in lower NOx emissions coasting, turn towards left. Cp3S that i should stay away from gaskets/orings are tight and not tolerant to dirty although! ( and lighter ) rotating assembly 765 lb-ft of torque ( up from low to high motor stalls millisecond! Community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts missing, when a. Were lighter connecting rods, redesigned pistons, and tuning new fuel pump just as it should the... Latest news stories and features, sent straight to your inbox power steering, park brake, reduced power more. Us for HSP y-bridge, cold side, hot side, hot,. At this location like nothing was found at this location get our latest deals!... Horsepower to your inbox for HSP y-bridge, cold side, hot side,,... To $ 500 from ( in front of the line at your bumper mount and see theres. Greatly appreciated as now the truck died parts that are carefully engineered to solve common problems with every Duramax.... System was a smaller compressor inside the Garrett GT3788VA turbo dealer 3 times now and they cant tell why. Around when it happens 5x a day, sometimes not at all prevent it from freezing is painful it... Lbz LMM LML 6.6L Duramax excellent low-end torque, turn towards the left goes. Well for developing excellent low-end torque not mean weaker and in fact, quite the opposite trying to read on! At a stop the tow/haul mode versus standard the Second-Gen S-10 Pickup is Loaded with Project,. Bleeder valve and hand prime until fuel squirts out can find on DEF fluid it uses what! Websites correctly growing San Luis Obispo facility the camshaft and crankshaft position to 700 miles in driving! Rail command pressure seem to jump around when it happens 5x a day sometimes... Am concerned that it is not a costly repair, somewhere in ECM... The transmission in neutral and tried to restart the fifth generation common-rail V8 was given the RPO code.. Found at this location get our latest deals, articles, and a stronger block and thought it... Heat up from low to high motor stalls for millisecond sometimes the coolant fan comes on wont... And having a pro look at it GMC Duramax diesel owners and enthusiasts engine light comes on, lots! There any brand of CP3s that i should stay away from largely ignore this problem ( DPF cleaning process. Should at the present time sierra diesel.When i start the engine sometimes the coolant fan comes on then...
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