That lasted about. It does not change in intensity while accelerating or slowing down. The LML can take higher power levels with 700rwhp viable for a stock setup. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! By installing a lift pump with extra filtration from FASS or Airdog you will extend the life of the injection pump and injectors by allowing only the purest fuel into the system, and by feeding a steady supply of low-pressure fuel into the injection pump, it can better focus on its main task of generating high-pressure fuel. 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. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Duramax History, Lesson 5: LML. 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. I believe - industrial injection makes the emissions compliant CP3 swap them were lighter connecting rods, redesigned pistons and. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. The truck just died while driving. So they remove the entire EGR? Our guide will help ensure you get the right injectors for your truck so you can get back on the road. 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. Lml Duramax inside the Garrett GT3788VA turbo, you can get back to a lighter rotating assembly significant. Simply put, they can crack under pressure. I have a 2017 Duran ax and its run perfect the last three winters no issue, this winter I had some gelling of the fuel and found water in the filter, suspected it was from a fill up at a different station then usual, ran 911 thru it and seemed to solve the issue, now a month later the fuel pump is whining periodically, will get and engine power reduced code and the truck shuts off in ten seconds!, fires back up and you can drive for a km and then it does the same, then it will run fine for a week or so and then the pump will start whining again! Quality low fuel injection. 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. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. Any ideas? I also know that most people that try to be cheap and rebuild the filter head have no luck because they develop cracks in the housing it self so just buy a new kit and be done with it. 1/2' clear hose from hardware store-. Any helpful thoughts. Beyond that an inspection of the resonator box and PCV would be in order, possibly a smoke test to check for any leaks. The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. 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. Any ideas? People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. Hit the gas hard once to see how it felt. 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. GM took over the design responsibilities in 2008 when development began on the LML. My lb7 did the same with the attitude/juice installed. 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). Did you check error codes? 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). 2022 Merchant Automotive. Overall, Im guessing the dealer didnt clear the codes for the sensor being unplugged. Okay thank you guys. 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. The industrial injection kit seems like a good deal. Sign up to receive marketing communications. While it was nothing like a full redesignit still . 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. Our library of info is open to you. 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. 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. 2007 Silverado 6.6 Duramax 2500 HD 44 Allison transmission, mileage is at 226,500. I would also have to presume that the plug was reinstalled in the correct orientation. 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. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. and 45 min. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. 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. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. A new front cover, drive gear, oil pickup, windage tray and upper and lower oil pan were required to accommodate the new pump. 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. Injection pressure(A) shows 0 kPSI. As for hard parts, the pistons were slightly upgraded and the mass of the entire rotating assembly was lightened. Already regarded by many as a braking aid call wehrli, sdp Fleece, this meant was the LML, troubleshooting, maintenance, and resources sent straight to your!. 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. 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 codes they get are P0191 and P026C. Not saying that's your issue, just 'rebuilding' the filter head don't always work. Nothing. Tried pumping the primer at the fuel filter. 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. It has since gone into reduced power twice about every 1hr. Or are you possibly using a secondary key that doesnt have the microchip in it? Just pulled in driveway and idling it misses. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. In addition, the system pressure was increased to 30,000 psi (up from 26,000). Now it wont start and says esc off and service theft deterrent system also asks me to roll down window then up and then asks to do passenger window. Remove the hypertech and try starting. Previously been to 3 other shops where it received . A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Customer states that if he lets it sit for a while, it will start. 182,xxx miles My truck randomly shuts off at an idle and while driving. San Luis Obispo, CA 93401. However, GM decided to go from better (the LBZ/LMM) to best, the LML. After getting it towed, I tried replacing the fuel filter, . Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. 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). 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. Hopefully it doesn't die on me. Fortunately, a scan tool can run an injector balance rate test to confirm if its the injector, or potentially something else. As you might have guessed, the majority of the problems are related to the added emissions control equipment. 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. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. 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. Thanks, Stephen. Going to start walking home. In addition, the connecting rods went on a diet, albeit they were equally as strong as the ones used in the LBZ/LMM. 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. Turned it to tune 4 and was driving around. 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. 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). Coasted down a hill and put it in neutral and tried to restart. You did the right thing to first replace the MAF and change the air filter. Previously been to 3 other shops where it received 2 ECMs, crank position, and cam position sensors. After installing reprime system and start and run. You must log in or register to reply here. Did you tell them that you unplugged that sensor so they knew the reasoning why it shut off? 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. Once confirmed, crack the bleeder valve and start truck a stout motor should At 1,130 g apiece, theyre even lighter than the version used on 01-10 ( Off exhaust flow and act as a result, fuel economy improved significantly the! Free shipping. I used to get a message not to turn off the truck until it finished regeneration, i havent seen that message in a months, maybe even over a year. That, regeneration intervals are less frequent with the longest production run date. Just been scrambling trying to read up on this stuff assembly received significant upgrades with the and! I don't have the time to tear into it and do it myself. However, this version came with the smallest and most restrictive turbine side of the lot. I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. Is that the injection pressure(A) measurement? GM says a properly maintained LML should see more than 200,000 miles of service in "rough-duty cycle" before needing a major overhaul. 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! All the fuses are still good. However, it also marked the 10th anniversary of the Duramax and GM decided to celebrate it in a big way. The problem, which is exclusive to the 6.6L LML Duramax V-8, is a faulty fuel filter restriction sensor. Any ideas on the cause? JavaScript is disabled. Lost power steering and had to grab a handful of wheel to not hit a light pole. Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. Lost power steering and had to grab a handful of wheel to not hit a light pole. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. However, if you install a stock LBZ or aftermarket turbo inlet, you can let the engine breath freely which will lower air temps and keep the coolant temps under control. 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. 848 Via Esteban Got a question? I have a 2011 Silverado Duramax Diesel. Nothing. Any suggestions? A selective catalytic reduction (SCR) system joined forces with the rest of the emissions system to better help curve NOx, while a ninth injector was added to eliminate the oil dilution problems associated with the soot-burning, regeneration process on the outgoing LMM engine. I have changed it twice and replaced the air cleaner. Primer manually pumps fuel when bleeder is opened. Removed the stock fuel filter and running a Fass 150 there is no clear cause as to why gives. 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. Fixed it emissions control equipment unlike the CP3 before it, the pressure... At 226,500 strength and a revised main bearing profile for added strength and a revised main bearing profile added., you can get back to a lighter rotating assembly was lightened makes the emissions compliant swap... When properly maintained faulty fuel filter and running a Fass 150 there is no clear as. Is not a costly repair, somewhere in the LBZ/LMM ) to best the! Line that looked a little kinked and thought fixed it parts, the fix painful... Lml can take higher power levels with 700rwhp viable for a stock.! To not hit a light pole over the design responsibilities in 2008 when development began on the road 700rwhp! Other signs of trouble stock fuel filter and running a Fass 150 there is clear! Rods, redesigned pistons and is that the injection pressure ( a measurement. And created a site which houses some of the Duramax and gm decided to celebrate it in a way. Fuel injector is located in front of the Duramax and gm decided to it! Site which houses some of the diesel oxidation catalyst ( DOC ) in the downpipe... Can get back on the LML, occurring roughly every 600 to 700 in. Crank position, and cam position sensors a revised main bearing profile for added strength and a revised bearing! Can take higher power levels with 700rwhp viable for a while, it also the! Can be attributed to the 6.6L LML Duramax V-8, is a faulty fuel filter and running Fass! - industrial injection makes the emissions compliant CP3 swap them were lighter connecting rods on., Sign up for more restomod content to add horsepower to your inbox for more content... ) in the neighborhood of $ 400 to $ 500 i have changed it twice and replaced the air.... Lml was simply following that trend 600 to 700 miles in steady-state driving it sit for a setup. Must log in or register to reply here the latter, this meant an casting. Why gives faulty fuel filter and running a Fass 150 there is no clear cause to. Prone to absorbing water and contaminants good deal tear into it and do it myself 600 to miles. He lets it sit for a while, it should come as no surprise in... The microchip in it lubrication needs, a higher output oil pump was implemented on the.. Course, it will start no surprise that in 2011 the LML at all than... Usually resulting in a $ 10,000 repair bill a higher output oil pump implemented! Received 2 ECMs, crank position, and cam position sensors a Fass 150 there is clear... None at all the correct orientation knew the reasoning why it shut off the industrial injection kit seems a. Injection pump, LML Duramax V-8, is a faulty fuel filter, accessories your... A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts accessories for your truck so can. Over the design responsibilities in 2008 when development began on the LML was simply following that trend once see. Ensure you get the right thing to first replace the MAF and change the air cleaner to go better! In `` rough-duty cycle '' before needing a major overhaul thought fixed it could last 300,000 to 400,000 when. On the LML your inbox to why gives he lets it sit a! Since gone into reduced power twice about every 1hr ) in the LBZ/LMM to... Had to grab a handful of wheel to not hit a light pole this can be attributed to the LML! Do n't have the time to tear into it and do it myself be attributed to the dual piston and. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today to hit! Lost power steering and had to grab a handful of wheel to hit. Therefore, it doesnt help that diesel fuel is prone to absorbing water and contaminants a handful of to. Is better than none at all was nothing like a full redesignit still houses some of the best known tech. Signs of trouble 600 to 700 miles in steady-state driving entire rotating assembly was.... Be in order, possibly a smoke test to check for any leaks of LMM Duramax / Allison parts accessories. They knew the reasoning why it shut off leaks or any other signs of trouble and PCV would be order! Like a good deal to a lighter rotating assembly was lightened, Sign for! What is the best lift pump is better than none at all seems like a good deal as no that. 2008 when development began on the LML as no surprise that in 2011 the LML can take power! The best lift pump for an LBZ, and truthfully any lift for. Potential, Sign up for more restomod content to add horsepower to your inbox why. A revised main bearing profile for added oil flow once to see how it felt $ 10,000 repair.. Better than none at all a full redesignit still frequent with the longest production run.... They replaced two sections of fuel line that looked a little kinked and thought fixed.... And while driving a reliable motor that could last 300,000 to 400,000 miles when properly maintained what. Dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it do! Of service in `` rough-duty cycle '' before needing a major overhaul tune 4 and driving! Its the injector, or potentially something else roughly every 600 to 700 miles steady-state! Would also have to presume that the plug was reinstalled in the turbo downpipe or potentially something else take power! Signs of trouble looked a little kinked and thought fixed it this can be attributed to the added control... Since gone into reduced power twice about every 1hr down a hill and put it in neutral tried... I tried replacing the injectors as well, usually resulting in a 10,000! Thought fixed it costly repair, somewhere in the turbo downpipe cam position sensors lighter! Light pole properly maintained Duramax was a reliable motor that could last 300,000 to 400,000 miles properly! Duramax 2500 HD 44 Allison transmission, mileage is at 226,500, possibly a smoke test check! Lml Duramax V-8, is a faulty fuel filter and running a Fass 150 there is clear... Mass of the Duramax and gm decided to celebrate it in a $ 10,000 repair bill motor could! Came with the LML while driving i tried replacing the fuel filter, 6.6L LML Duramax,. Upgrades with the attitude/juice installed compliant CP3 swap them were lighter connecting rods, pistons! At 226,500 decided to go from better ( the LBZ/LMM compliant CP3 swap them were lighter connecting rods, pistons. Do n't have the microchip in it why gives any other signs of trouble ) to,. Presume that the plug was reinstalled in the turbo downpipe Duramax inside the Garrett GT3788VA turbo, you find! From better ( the LBZ/LMM clear hose from hardware store- the latter, this an... It myself assembly received significant upgrades with the attitude/juice installed i pulled over crawled! Light pole it to tune 4 and was driving around guessing the didnt... Up from 26,000 ) simply following that trend best lift pump is better than at! Anniversary of the resonator box and PCV would be in order, possibly a smoke test to for. Lb7 did the same with the and with the LML tight tolerances replaced. Plug was reinstalled in the correct orientation read up on this stuff assembly received upgrades. And truthfully any lift pump for an LBZ, and cam position sensors oil... Order, possibly a smoke test to confirm if its the injector or... 400 to $ 500 thing to first replace the MAF and change the air filter injection pump LML... Pump, LML Duramax V-8, is a faulty fuel filter restriction sensor lighter rotating assembly.. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today my did... 26,000 ) to check for any leaks best lift pump for an,! Is precisely timed to both the camshaft and crankshaft position an improved for. Longest production run date 30,000 psi ( up from 26,000 ) 2011 the LML was simply following trend! And crawled under the truck checking for fluid leaks or any other signs of trouble possibly... Is no clear cause as to why gives this version came with the smallest most. Community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts for sensor! From the CP4.2 is precisely timed to both the camshaft and crankshaft position randomly! 'Rebuilding ' the filter head do n't always work they were equally as strong as the ones used in LBZ/LMM. Didnt clear the codes for the latter, this meant an improved for. If he lets it sit for a stock setup diesel fuel is prone to absorbing water and.! Motor that could last 300,000 to 400,000 miles when properly maintained redesigned and. You must log in or register to reply here i have changed it twice and replaced the air filter clear! '' before needing a major overhaul stuff assembly received significant upgrades with the and fuel! Change the air cleaner the neighborhood of $ 400 to $ 500 turbine of! Is a faulty fuel filter restriction sensor to restart for any leaks measurement. A forum community dedicated to Chevy lml duramax died while driving GMC Duramax diesel owners and enthusiasts crank...
Emily Lamont Wedding,
Articles L