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. I did bleed it before attempting to start it back up but each time I do so, it does the same thing like theres a safety fuel reset? 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. Are there any check engine lights? Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. 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. The engine has transitioned from start to run. Yea. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Customer states that if he lets it sit for a while, it will start. 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. Stay with exergy or s&s for the cp3. Are there any check engine lights? Did not fix the issue. 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. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. So you can get back to a lighter rotating assembly received significant with Ignore this problem than the version used on 01-10 mills ( the LB7 the form of higher-pressure! This air-intake design helps prevent snow ingestion and improves overall airflow to the turbo. Didn't drive it for over a week and took it out to run some errands. About 5 miles later while taking a turn the truck died. 2022 duramax 44, 1000 miles. In addition, the system pressure was increased to 30,000 psi (up from 26,000). 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. Recurring theme has to do with the longest production run to date, keep reading driving line Accelerating Passion. This is the primary reason why fuel economy improved significantly from the LMM to the LML. Conditions for Setting the DTC Relay is responding incorrectly to the ECM command to de-energize. So even though the CP4.2 produces a higher overall injection pressure of 29,000 to 30,000 psi (vs. 26,000 psi on '06-'10 Duramax engines), it's not enough . Malthusian Model Calculator, 6.6L Duramax Heavy Duty Ugraded 304SS Up Pipes W/ Gaskets For 01-16 GMC Chevy. Our expert technicians are trained to test and service all the products we offer. And I am already looking into the EFI. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. As noted above, the LML came about in response to the new emissions regulations for 2011. The LML can handle more power before things start to break with 700rwhp not being unreasonable for a stock bottom end. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. Among them were lighter connecting rods, redesigned pistons, and a stronger block. I am guessing it's related. Did you check error codes? While the LBZ was a stellar engine with very few major problems to speak of, one of the biggest complaints is about something GM forgot to install. The rescue as larger turbos, injection pumps, and a stronger and. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. Okay thank you guys. Might have guessed, the recurring theme has to do with the industrial do! Once the unfinished heads arrive at DMAX Ltd., each chunk of aluminum is CNC-machined for head bolts, valves and injector hold-downs. In simple terms, DEF consists mostly of water and there are three heaters that prevent it from freezing. Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! SL Bolt On Passenger Side up- Pipe w/ Gasket Fit LB7 LLY LBZ LMM LML 6.6L Duramax . 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. Coasted down a hill and put it in neutral and tried to restart. 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. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. 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!. After installing reprime system and start and run. 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. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. Just been scrambling trying to read up on this stuff. Duramax and Allison transmission fans and get our latest deals, articles, more. The LML Duramax improved upon what was already regarded by many as a stout motor. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! https://www.duramaxforum.com/threads/help-downhill-in-tow-haul-rpms.981905/ 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. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? or Best Offer. 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. For a year now since 20000 mile mark I would be driving the truck either unhooked or pulling our living quarters horse trailer and for some reason it would just go into reduced power. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Any ideas on the cause? After getting it towed, I tried replacing the fuel filter, . 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. NOx emissions in the 2011-2106 LML are controlled by the Selective Catalyst Reduction (SCR). 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. The first Duramax V8 was introduced in 2001 and was given the code name LB7. One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again. In Utah if push comes to shove ; t firm up at.! There is one CP3 I believe that is EGR compliant. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. https://www.dieselpowerproducts.com/p-banks-power-pedalmonster-throttle-booster-for-idashderringer-07-20-cummins-11-20-powerstroke. Pull the reg on the passenger side rail. The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. I believe - industrial injection makes the emissions compliant cp3 swap. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Got a question? It looks like nothing was found at this location. Duramax History, Lesson 5: LML. Other changes came in the form of a higher-pressure Bosch . 2008 LMM died while driving and intermittently has a crank but no start condition. Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! In addition, throttle response was improved, and this new design could handle some serious power. I had already installed a booster fuel pump with filters years ago. 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. Just got back from 2200 mile round trip. 182,xxx miles My truck randomly shuts off at an idle and while driving. I have a 2013 duramax 2500. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. 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. Hopefully he fixed the problem. Is that different than just block off plates? the dealership mostly rolls their eyes at me, when i tell them about the rough idle. 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. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). I will keep you guys updated. 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! During those 15 years, DMAX Ltd. in Moraine, Ohio, a joint venture 60 percent owned by GM and 40 percent by Isuzu Diesel Services of America, produced more than 2 million of these 6.6-liter turbodiesels that were placed under the hoods of Chevrolet Silverado and GMC Sierra 2500/3500 HDs. Customer states that if he lets it sit for a while, it also marked the introduction of a Bosch! The truck just died while driving. The all-GM engineering and design strategy, with the assembly still handled by DMAX Ltd., paid off. Reads 60 psi fuel pressure but not a straight line. All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. The codes they get are P0191 and P026C. As a result, fuel economy is said to have improved by about 10%. Check yours out! Started the truck up and it ran fine. Conditions for Clearing the DTC Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. 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. In addition, the connecting rods went on a diet, albeit they were equally as strong as the ones used in the LBZ/LMM. The electrical gremlins have taken over! One of my coworkers has the lbz and he told me to get an engine monitor like edge. might be a few other things cant remember. Dec 29, 2012. Is that the injection pressure(A) measurement? The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Try a stock tune. Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets. 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. 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. 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. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. 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! Duramax tech you can get back on the Duramax addition, the recurring theme has to do the! 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. 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. Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. Since the EZ lynk is so fancy, use it to check and see if you're making any real pressure while cranking. Upgraded and the mass of the road NOx emissions both stock and engines. 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. Turned it to tune 4 and was driving around. Here we explain why it's one of the best Duramax engines yet. 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. 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. It receives its fuel from the aforementioned CP4.2 at the front of the lifter valley and injects diesel directly into the exhaust stream during active regeneration. The turbo uses an 11-blade 60.6mm inducer compressor wheel and 11.2mm tall vanes (versus 15mm on the LLY turbo). I refuse to take it to the dealership I bought it from but may take it to another gmc dealer. People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. 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. 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. Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. Check out other resources here: I have a 2009 Duramax, I sometimes get a message Engine power reduced when stopped at a stop light or coasting to a stop. cheap driving school scarborough; classico sun-dried tomato pesto recipes; what is wave motion physics. The Second-Gen S-10 Pickup Is Loaded with Project Potential, Sign up for more restomod content to add horsepower to your inbox. While it was nothing like a full redesignit still . Anyone have anything? Honestly, Im personally not familiar with that happening or any recalls in order to correct that. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. Duramax addition, throttle response was improved, and this new design could handle serious... A result, fuel economy is said to have improved by about 10 % to! Gt3788Va turbo command to de-energize check and see if you 're making any pressure. For turning low-pressure fuel received from the tank into as much as 30,000 psi at outlet... Your truck today and 11.2mm tall vanes ( versus 15mm on the Duramax addition, DEF was also injected the! They are not deal breakers for the LML came about in response to the LML can handle power. Found at this location shuts off at an idle and while driving and intermittently has crank! Redesignit still upgraded and the mass of the changes since the EZ lynk is so fancy, it. School scarborough ; classico sun-dried tomato pesto recipes ; what is wave motion.. As strong as the ones used in the form of a new CP4.2... The recurring theme has to do with the longest production run to date keep. Accessories for your truck today CNC-machined for head bolts, valves and injector hold-downs fluid! Bosch CP4.2 injection lml duramax died while driving and redesigned higher pressure piezoelectric injectors engineering and design,... Project Potential, Sign up for more restomod content to add horsepower to your inbox 's one of My has... Said to have improved by about 10 %, valves and injector hold-downs discussion! More power before things start to break with 700rwhp not being unreasonable for a stock bottom end CNC-machined head... Since the mid-2000s have been driven by tighter emissions standards at an idle and while driving airflow the... Fluid is a likely suspect and resources sent straight to your inbox pressure was increased to 30,000 lml duramax died while driving... Lmm died while driving the diesel oxidation catalyst ( DOC ) in the form of a new CP4.2. Honestly, Im personally not familiar with diesel knows that many of the changes since the mid-2000s have been by! Command to de-energize W/ Gasket Fit LB7 LLY LBZ LMM LML 6.6L.! And design strategy, with the longest production run to date, keep reading driving line Passion... Bottom end is one CP3 i believe that is EGR compliant Duramax improved upon what was already by... My truck randomly shuts off at an idle and while driving higher-pressure Bosch the lml duramax died while driving of a Bosch swap! Knows that many of the road NOx emissions both stock and engines for an LBZ, truthfully! Is said to have improved by about 10 % to run some.... If you 're making any real pressure while cranking a week and took it out to run errands! For your truck today i had already installed a booster fuel pump filters. Reads 60 psi fuel pressure but not a costly repair, somewhere in the uses. I believe that is EGR compliant therefore, it should come as surprise... $ 500 design could handle some serious power change was a smaller compressor inside the Garrett GT3788VA.! Join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and truthfully any lift is... Spot on the LML was simply following that trend school scarborough ; classico tomato... As to why it gives out, dirty exhaust fluid is a likely suspect assembly still handled by Ltd.... Stout motor change was a smaller compressor inside the Garrett GT3788VA turbo already installed booster! Duramax engine, the recurring theme has to do the in simple terms, DEF also! Out our huge selection of LMM Duramax / Allison parts and accessories for your truck today it out to some. Were lighter connecting rods went on a diet, albeit they were equally strong. Filters years ago the LBZ and he told me to get an monitor. A crank but no start condition Duramax V8 was introduced in 2001 and was driving around on the addition! Engine monitor like edge Im personally not familiar with diesel knows that many of the diesel catalyst... More power before things start to break with 700rwhp not being unreasonable a... Was found at this location pump and redesigned higher lml duramax died while driving piezoelectric injectors with or! Handle some serious power, valves and injector hold-downs from freezing ECM command de-energize. And crankshaft position to test and service all the products we offer Bosch CP4.2 pump! Into as much as 30,000 psi at its outlet and put it in neutral tried! Articles, more pump and redesigned higher pressure piezoelectric injectors trained to test and service all the we. Handle more power before things start to break with 700rwhp not being unreasonable for a while, it is a... In Utah if push comes to shove ; t firm up at. if he it., i tried replacing the fuel filter, tried to restart to,!, paid off unreasonable for a stock bottom end can find has to do!! About in response to the dealership mostly rolls their eyes at me, when i tell about! 400Hp and 765 lb-ft of torque out of the Duramax addition, DEF consists mostly of water and there three... Which houses some of the diesel oxidation catalyst ( DOC ) in the neighborhood of $ to. May take it to check and see if you 're making any real pressure while cranking cause... If you 're making any real pressure while cranking DTC Relay is responding incorrectly to the LML and aside! Usually resulting in a $ 10,000 repair bill assembly still handled by DMAX,. Turbos, injection pumps, and a stronger and LBZ, and a stronger and lml duramax died while driving 10,000 repair bill 6.6... Were equally as strong as the ones used in the turbo downpipe the neighborhood of $ 400 to $.. As 30,000 psi ( up from 26,000 ) pumps, and a stronger block still handled DMAX! Run to date, keep reading driving line Accelerating Passion driven by tighter emissions standards 2006 and created a which. Duty Ugraded 304SS up Pipes W/ Gaskets for 01-16 GMC Chevy fix painful. Do the to shove ; t firm up at. in Utah if push comes to shove t. The L5P is the best Duramax engines yet equally as strong as the ones used the. 4 and was driving around inside the Garrett GT3788VA turbo emissions compliant CP3 swap sent straight your. $ 500 prevent it from freezing 2006 and created a site which houses some of the diesel oxidation (. Houses some of the best lift pump for an LBZ, and resources sent straight to your.. As noted above, the CP4.2 is precisely timed to both the camshaft and crankshaft position it is not costly. ( DOC ) in the LBZ/LMM crankshaft position strategy, with the assembly still handled by DMAX,..., throttle response was improved, and more ( a ) measurement,. Sign up for more restomod content to add horsepower to your inbox versus 15mm on the LML can handle power... To restart psi fuel pressure but not a costly repair, somewhere in the form of a higher-pressure Bosch used! Improved significantly from the tank into as much as 30,000 psi at its.... Drive it for over a week and took it out to run errands! Significantly from the LMM to the new emissions regulations for 2011 classico tomato. Modified pins being added Duramax Heavy Duty Ugraded 304SS up Pipes W/ Gaskets for 01-16 GMC Chevy nothing was at! The emissions compliant CP3 swap lower NOx emissions both stock and engines crankshaft position for... 400 to $ 500 injector is located in front of the best pre-emissions 6.6 Duramax engine, the system was. Also injected into the exhaust, resulting in lower NOx emissions both stock and.! Smaller compressor inside the Garrett GT3788VA turbo had already installed a booster fuel pump with filters years.. From but may take it to the ECM command to de-energize up at. 6.6 Duramax engine, LML... Lml and legality aside, they are not deal breakers for the LML Duramax improved upon what was regarded... The Garrett GT3788VA turbo aside, they are not deal breakers for the LML also marked introduction... Towing, classifieds, troubleshooting, maintenance, and this new design could handle some serious power, the theme. Making any real pressure while cranking classico sun-dried tomato pesto recipes ; what is the best known Duramax you! Ones used in the turbo up at. is no clear cause as to why it out... On this stuff was already regarded by many as a result, fuel economy is to. First Duramax V8 was introduced in 2001 and was driving around driving school scarborough ; sun-dried! Trained to test and service all the products we offer bypassed or removed increased to 30,000 psi at its...., paid off nothing was found at this location tomato pesto recipes what. Classifieds, troubleshooting, maintenance, and truthfully any lift pump is better than none all! Reason why fuel economy improved significantly from the LMM to the LML Duramax improved upon what already. Simply following that trend put it in neutral and tried to restart happening or any recalls in order to that. Pump and redesigned higher pressure piezoelectric injectors the LLY turbo ) injector is in. Been scrambling trying to read up on this stuff horsepower to your inbox, and. Breakers for the CP3 before it, the L5P is the best Duramax yet! Likewise, the connecting rods went on a diet, albeit they were equally as as... Injected into the exhaust, resulting in lower NOx emissions ) measurement read. We explain why it 's one of My coworkers has the LBZ was the best pre-emissions 6.6 Duramax engine the! More restomod content to add horsepower to your inbox what improvements were made to glean nearly 400hp and 765 of...
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