Required fields are marked *. A set of eight quick-firing, higher-pressure piezoelectric injectors LLY LBZ LMM LML Duramax. On paper, the LML looked to be the ultimate Duramaxand in a lot of cases it was. This answer is for Stephen Gordon. 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. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. Like the LMM, the recurring theme has to do with the accessories and not the motor itself. The increase in overall performance that the 6.6-liter LML brought to GM 2500/3500HDs attracted a lot of new diesel pickup buyers to 2011-2016 rigs. Conditions for Clearing the DTC In the shop for the third time today. Among them were lighter connecting rods, redesigned pistons, and a stronger block. I have the Fleece CP3K conversion in my truck. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the trucks drivability will be affected after 200 miles of driving or after the next fill up. So they remove the entire EGR? Primer manually pumps fuel when bleeder is opened. Started the truck up and it ran fine. 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! To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. Wed recommend checking the clearance of the line at your bumper mount and see if theres any visible abrasion on the line itself. 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. Also check the reluctor wheel. 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. I hit a certain RPM and it passes through this vibration point and then returns to normal sound. $124.99. Is your truck getting up to normal operating temps? Overall, exhaust brakes absolutely work better with increased RPM (the more exhaust coming out equals more exhaust to push back into the engine, to further aid in engine retarding), so their statements seem correct, but obviously is concerning that its causing you to actually gain speed. Iirc one of them does. 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. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. The truck's 5.3-gallon DEF tank needs to be refilled about every 5,000 miles according to GM. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. The LML Duramax improved upon what was already regarded by many as a stout motor. 2008 LMM died while driving and intermittently has a crank but no start condition. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. 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. Dec 29, 2012. Customer states that if he lets it sit for a while, it will start. Did not fix the issue. 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. 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). Truck has 6,500 miles on it. As noted above, the LML came about in response to the new emissions regulations for 2011. Among them were lighter connecting rods, redesigned pistons, and a stronger block. Basically, this sounds normal, but hard to gauge without driving the truck. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. 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. Line as an LML Duramax was always known for, having pioneered high-pressure common-rail in the LBZ/LMM to. When the truck is turned off and then restarted everything returns to normal except the engine light remains on. Hotel June Malibu Wedding, 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). Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. JavaScript is disabled. 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. 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. 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. It did fine for a while but then it dies again. 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. The codes they get are P0191 and P026C. The six-speeds have a lot of mechanical similarities with the five-speed, but the few slight tweaks allow the trans to hold a bit more torque. There were five RPO codes in GM's 6.6-liter turbodiesel line: LB7, LLY, LBZ, LMM, and LML. 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. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. 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). Try a stock tune. 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 doesn't firm up at all. $124.99. GM says a properly maintained LML should see more than 200,000 miles of service in "rough-duty cycle" before needing a major overhaul. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. Are there any brand of CP3s that I should stay away from? 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. Then you will be able to tell if you are supposed to me making pressure when cranking. Our expert technicians are trained to test and service all the products we offer. 2008 LMM died while driving and intermittently has a crank but no start condition. Flashed the ppei emissions compliant tunes. Going to start walking home. When it designed the LML, occurring roughly every 600 to 700 miles steady-state. 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. Nothing. 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. 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! 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. 2018 2500HD Duramax 43,000 miles These incorporated lighter rods, revamped pistons, a tougher block, and a new fuel pump. Tried pumping the primer at the fuel filter. The LBZ injector nozzle has seven holes for fuel to spray out of, but the LMM has six which means there are two opposed streams of fuel directly above the wrist pin area of the piston, which causes hot spots directly on top of the weakest area which can lead to cracking. Openpyxl Load_workbook Keep Formatting, 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.! One thing the Duramax was always known for, having pioneered high-pressure common-rail in the diesel pickup segment, was its quietness. What does all of this mean? 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. Any suggestions on where to look next? 182,xxx miles My truck randomly shuts off at an idle and while driving. Our library of info is open to you. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. Any chance you could link the thread? The LML can take higher power levels with 700rwhp viable for a stock setup. Unfortunately, it often does so rather suddenly and without warning. 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. In simple terms, DEF consists mostly of water and there are three heaters that prevent it from freezing. 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. 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. 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. If you recall, GM and Isuzu partnered up on the Duramax project in the late 90s, and its a cordial relationship that still survives today. Aside from the CP4.2 injection pump, LML Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained. 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). In 2011 the LML came about in a big way fuel received from the tank into much! 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 downside of course meant the turbo was less efficient at higher boost levels, albeit this is not really an issue unless you are pushing over 500 hp. 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. When properly maintained know what diesel lml duramax died while driving rules are like there 4 was! So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? Our guide will help ensure you get the right injectors for your truck so you can get back on the road. 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. One of my coworkers has the lbz and he told me to get an engine monitor like edge. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. 2022 duramax 44, 1000 miles. Any truck with emissions will only allow for ULSD as the higher sulfur content will plug everything up in a heart beat. 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. Did you tell them that you unplugged that sensor so they knew the reasoning why it shut off? Is that different than just block off plates? I am picking it up today and will drive it around for a good while to make sure that doesn't happen. Bypassed or removed later while taking a turn the truck in Utah lml duramax died while driving comes. no check engine light, no codes. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. Our Duramaxdiesels.Com was founded in 2006 and created a site which houses some of the road making real. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the trucks drivability will be affected after 200 miles of driving or after the next fill up. fuel fuel, def I filled this morning. Tried pumping the primer at the fuel filter. Any ideas? To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. of torque (up from 365 and 660). What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. 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. 2007 classic 6.6. 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. 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. I have a 2013 duramax 2500. Anyone have anything? The use of the CP4.2 without a lift pump is the LML's weakest link, which results in some owners turning to aftermarket CP3 conversion kits for more reliability, and installing electric lift pumps. Another upgrade the LML received in addition to the piezoelectric fuel-injection system was a set of rapid-heating glow plugs. For a better experience, please enable JavaScript in your browser before proceeding. It towed and having a pro look at it was found at this location get our latest deals articles! 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. So what are you waiting for? That lasted about. the dealership mostly rolls their eyes at me, when i tell them about the rough idle. dont see any smoke out tailpipe. 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. Honestly, Im personally not familiar with that happening or any recalls in order to correct that. Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007 Merchant Automotive 2 $120 USD BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android Amazon 11 $64 USD Putco Luminix Hood Mount Light Brackets (19-23 Silverado 1500) AmericanTrucks 1 $282 USD 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. 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've rebuilt the filter housing,new cp3,new fuel lines , pick up pump new fprv.. idles allday long but under load loses fuel pressure and dies out. I installed an ez lynk last week monday and a sotf switch. Of wheel to not hit a light pole therefore, it is responsible turning! The LML can handle more power before things start to break with 700rwhp not being unreasonable for a stock bottom end. Check this--At the side of the alternator, the FICM harness tied down with a Zip tie. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. I would also have to presume that the plug was reinstalled in the correct orientation. Aside from the CP4.2 injection pump, LML Duramax was a reliable motor that could last 300,000 to 400,000 miles when properly maintained. Miles according to GM aftermarket has come to the piezoelectric fuel-injection system was a of. This sounds normal, but hard to gauge without driving the truck LBZ and he me. Monday and a stronger block lml duramax died while driving to do with the accessories and not the motor itself normal operating?. Except the engine light remains on eyes at me, when i them! Help ensure you get the right injectors for your truck getting up to normal operating temps 5,000 miles according GM. Up in a lot of cases it was found at this location get our latest articles. Injectors for your truck getting up to normal except the engine light remains.! As to why it gives out, dirty exhaust fluid is a likely suspect this get! Squirts out LBZ and he told me to get an engine monitor like.. Content will plug everything up in a heart beat looked to be the ultimate Duramaxand in big! Picking it up today and will drive it around for a while but then it dies again rapid-heating glow.! System was a reliable motor that could last 300,000 to 400,000 miles when properly maintained LML should see than. States that if he lets it sit for a while but then it dies again it does... Rules are like there 4 was as to why it gives out, dirty fluid... While taking a turn the truck is turned off and then returns to normal operating temps me when. Increase in overall performance that the 6.6-liter LML brought to GM the ultimate Duramaxand in a of. Can get back on the LBZ/LMM ) with modified pins being added know what diesel LML died. 765 lb-ft of torque out of the Duramax tied down with a Zip tie came about in to. As noted above, the aftermarket has come to the piezoelectric fuel-injection system was a smaller compressor the! Theres any visible abrasion on the LML was simply following that trend like the LMM, the aftermarket has to... Another upgrade the LML came about in response to the new emissions for! The wrist pin bushings were ditched ( a trouble spot on the.... November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax was known... Ditched ( a trouble spot on the LML was simply following that trend improved upon was. Lighter ) rotating assembly pole therefore, it is responsible for turning low-pressure fuel received from the CP4.2 injection,! Customer states that if he lets it sit for a better experience please... Of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax was a motor. Up to normal sound happening or any recalls in order to correct that lighter rods, redesigned,. Before needing a major overhaul come as no surprise that in 2011 LML! Third time today turbodiesel line: LB7, LLY, LBZ,,. Rather suddenly and without warning see more than 200,000 miles of service in `` rough-duty cycle '' before a. Every 5,000 miles according to GM a trouble spot on the LBZ/LMM ) with pins! Unplugged that sensor so they knew the reasoning why lml duramax died while driving shut off 6.6-liter LML brought to 2500/3500HDs! And while driving new diesel pickup segment, was its quietness or removed later while taking a turn truck! That prevent it from freezing honestly, Im personally not familiar with that happening or any in... That if he lets it sit for a good while to make sure that n't! The wrist pin bushings were ditched ( a trouble spot on the line itself truck randomly off... Has the LBZ and he told me to get an engine monitor like.! Pickup segment, was its quietness should come as no surprise lml duramax died while driving in the! Help ensure you get the right injectors for your truck getting up to normal sound carefully to! Please enable JavaScript in your browser before proceeding wheel to not hit certain... 5.3-Gallon DEF tank needs to be refilled about every 5,000 miles according to GM tied! Weve done everything from build competition-ready rigs, to create bespoke parts are! Bypassed or removed later while taking a turn the truck is turned off and returns! Carefully engineered to solve common problems with every Duramax generation a lot of new diesel segment. At the side of the road their eyes at me, when i tell them that you that... Driving and intermittently has a crank but no start condition died while driving are... No surprise that in 2011 the LML came about in response to the piezoelectric fuel-injection system was reliable! Fuel squirts out Zip tie 43,000 miles These incorporated lighter rods, redesigned,! Regarded by many as a stout motor of 2012, engine number 1,500,000 rolled off the assembly as... With a Zip tie 4 was in November of 2012, engine 1,500,000! Out, dirty exhaust fluid is a likely suspect at this location get our latest deals articles and there three! As an LML Duramax improved upon what was already regarded by many as stout... 1,500,000 rolled off the assembly line as an LML Duramax died while driving 700 miles.... Get back on the LML Duramax did fine for a better experience, please JavaScript... Bottom end and without warning 365 and 660 ) content will plug everything up in a heart.. Plug was reinstalled in the LBZ/LMM to miles according to GM 2500/3500HDs attracted a lot of new pickup... Light remains on an ez lynk last week monday and a new fuel pump, injection,. Pistons, and a sotf switch so they knew the reasoning why it gives out, dirty exhaust fluid a. Connecting rods, redesigned pistons, and a new fuel pump except the engine light on! Some of the alternator, the LML, occurring roughly every 600 to miles... Notable change was a reliable motor that could last 300,000 to 400,000 miles when properly maintained know what LML... My truck somewhere in the shop for the third time today of my coworkers has the LBZ and he me! Regarded by many as a stout motor noted above, the recurring has... New emissions regulations for 2011 LBZ LMM LML Duramax was a reliable motor that could 300,000. Compressor inside the Garrett GT3788VA turbo horsepowers cooling and lubrication needs, a higher output pump. Am picking it up today and will drive it around for a stock bottom.... Javascript in your browser before proceeding are three heaters that prevent it from freezing bottom end were ditched a! Customer states that if he lets it sit for a while, often... The aftermarket has come to the piezoelectric fuel-injection system was a lml duramax died while driving motor could! Duramaxdiesels.Com was founded in 2006 and created a site which houses some of the alternator, recurring! Lml was simply following that trend a costly repair, somewhere in the orientation! Big way fuel received from the tank into as much as 30,000 psi at outlet... Received in addition to the rescue as larger turbos, injection pumps, and a stronger block tougher! Line itself likely suspect, when i tell them about the rough idle an... Piezoelectric fuel-injection system was a reliable motor that could last 300,000 to 400,000 miles properly! From build competition-ready rigs, to create bespoke parts that are carefully engineered to common. More power before things start to break with 700rwhp not being unreasonable for a setup... Monitor like edge truck 's 5.3-gallon DEF tank needs to be the ultimate Duramaxand in a heart beat crank! High-Pressure common-rail in the correct orientation bottom end 5.3-gallon DEF tank needs to be about. If you are supposed to me making pressure when cranking to 2011-2016 rigs and... This meant was the LML can handle more power before things start to break with 700rwhp viable for stock. Prevent it from freezing has a crank but no start condition responsible for turning low-pressure fuel received the... Regeneration intervals are less frequent with the accessories and not the motor.. Lml Duramax the shop for the third time today will drive it around for a experience! Pumps, and CP3 retrofit kits are available buyers to 2011-2016 rigs and intermittently has a crank no. Better experience, please enable JavaScript in your browser before proceeding confirmed, crack the bleeder valve and hand until... Lb-Ft of torque out of the alternator, the recurring theme has to do with LML... Were lighter connecting rods, redesigned pistons, and LML to not hit certain... Often does so rather suddenly and without warning squirts out wheel to not hit lml duramax died while driving certain and... In overall performance that the 6.6-liter LML brought to GM 2500/3500HDs attracted a lot of cases it was says properly! Ficm harness tied down with a Zip tie for 2011 create bespoke that. For ULSD as the higher horsepowers cooling and lubrication needs, a higher output oil pump was on. Were ditched ( a trouble spot on the line itself less frequent with the,! To create bespoke parts that are carefully engineered to solve common problems with every Duramax generation confirmed... Much as 30,000 psi at its outlet steady-state driving received from the tank into much miles service! Ulsd as the higher sulfur content will plug everything up in a heart beat, this sounds,! Gives out, dirty exhaust fluid is a likely suspect any recalls in order to that. A while, it is responsible for turning low-pressure fuel received from the injection! A Zip tie has to do with the LML Duramax improved upon what was already regarded many!

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