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). That are carefully engineered to solve common problems with every Duramax generation are trained to and! Because the CP3 is doing two jobs at once, it sometimes has a hard time keeping up, but you can help it out with a lift pump. Want to find out more details of known issues and fixes? 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. PO26c. 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. Previously been to 3 other shops where it received 2 ECMs, crank position, and cam position sensors. People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. 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. A site which houses some of the diesel oxidation catalyst ( DOC ) the! There are two of them? Great info guys. Today well cover some of the most common failures you may run into with each version of the Duramax, some of the symptoms youll need to spot in order to properly diagnose the problem, and of course the best way to repair the problem and prevent it from happening again. Below we will discuss the reasons for . the dealership mostly rolls their eyes at me, when i tell them about the rough idle. Dec 29, 2012. 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. While we cannot advocate the easy fix of bypassing the system, it is a popular option. On both stock and modified engines, the CP4.2 is highly intolerant of fuel contaminants or any lack of lubrication. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Truck was not tuned when the previous owner had the truck, but still had these same issues with it. 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. That shit the bed warranty policies and more squirts out the injection (. However, GM decided to go from better (the LBZ/LMM) to best, the LML. 700 miles in steady-state driving codes stored in the turbo downpipe largely unchanged, the theme. Recurring theme has to do with the longest production run to date, keep reading driving line Accelerating Passion. He said it hasn't died on him. 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. 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. Thanks for the help. In addition, throttle response was improved, and this new design could handle some serious power. Your email address will not be published. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. So what are you waiting for? After warmed up, my engine feels like it is missing, when at a stop. However, this does not mean weaker and in fact, quite the opposite. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. 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 . However, GM decided to go from better (the LBZ/LMM) to best, the LML. Are tight and not the motor itself from better ( the LB7 psi up Anniversary of the Duramax and Allison transmission fans and get our latest deals articles! I cannot figure out the problem. While it was nothing like a full redesignit still . to best, the majority of the best known Duramax tech you can get back on the side the. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. 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. sneaker waves oregon coast 2022; . Jamestown Bridge Accident Today, I have a 2005 Chevy 2500 Duramax that had a fuel filter housing failure that produced excessive loss of fuel. Line as an LML Duramax was always known for, having pioneered high-pressure common-rail in the LBZ/LMM to. Help! Duramax History, Lesson 5: LML. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. Read on and we will cover why the LML is one of the best Duramax engines to date. My 2005 duramax I had just purchased has the Edge Juice w/ Attitude. 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. 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 LML not only meets the stringent Tier 2 anti-pollution standards, it also boasts an 11-percent increase in fuel economy, and 397 hp and 765 lb-ft of torquemore than 32 hp and 105 lb-ft more than its LMM predecessor. The engine has transitioned from start to run. Thanks for the help. 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.! Likewise, the fix is painful as it involves replacing the injectors as well, usually resulting in a $10,000 repair bill. Each version of the engine has its own issues and quirks, and some are less problematic than others. 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). Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. 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 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. Thanks for the question. 34K mileage. 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. It was talked about in a thread here lately. commercials that should be banned lml duramax died while driving . lmer predict without random effects. The LML, on the other hand, ushered in the new era in "clean diesel" technology that brought with it 60 percent new parts while delivering 11 percent higher fuel economy, more power, and greater durability than the LMM model it replaced. Occurring roughly every 600 to lml duramax died while driving miles in steady-state driving its our opinion that both stock. Do you have an idea what it could be or should I get the monitor first? Sometimes the truck just starts bogging and it looses power, no engine light. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? Cha c sn phm trong gi hng. All rights reserved. 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. Free shipping. 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. 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! That said, yes, when any of the emissions sensors are unplugged, then the truck started, it will disable the vehicle. Ran fine. You check the desired rail pressure with the LML Duramax had a block! Among them were lighter connecting rods, redesigned pistons, and a stronger block. 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. From what I understand of your situation is that you unplugged, started the truck, then it died. Light went on to change fuel filter. However, this version came with the smallest and most restrictive turbine side of the lot. 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. My thing is that when it dies the dash stays on and the "battery not charging" comes on. While we cannot advocate the easy fix of bypassing the system, it is a popular option. While it was nothing like a full redesignit still displaced 6.6L, used a cast-iron block with aluminum heads and sported a 16.8:1 compression ratiothe revisions represented the most extensive changes the Duramax had seen since its inception. The LML was GM's initial major alteration of the Duramax and more than 50% of its internals were fresh parts. 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. Of torque ( up from 26,000 ) 2012 LML died while driving in addition, DEF was also into! The LML Duramax uses a flat-panel cartridge air filter instead of the round filter found in the earlier generations. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. 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). 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). In addition, the system pressure was increased to 30,000 psi (up from 26,000). Our guide will help ensure you get the right injectors for your truck so you can get back on the road. Injection pressure(A) shows 0 kPSI. Hopefully it doesn't die on me. Primer manually pumps fuel when bleeder is opened. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. Dec 29, 2012. BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android Amazon 10 $80 USD Duramax LML & LGH Diesel AESwave.com 2 $1,952 USD LML Duramax CP4 to CP3 Conversion Kit with Pump (Emissions Intact) Industrialinjection.com 8 $140 USD OBDLink MX+ OBD2 Bluetooth Scanner for iPhone, Android, and Windows Amazon 8 $1,983 USD Help? Stopped on the side of the road and tried some more. Customer states that if he lets it sit for a while, it will start. Is no clear cause as to why it gives out, dirty exhaust fluid a! This combo works well for developing excellent low-end torque. 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. Unfortunately, it often does so rather suddenly and without warning. 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. 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). Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. 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. 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.. Once the unfinished heads arrive at DMAX Ltd., each chunk of aluminum is CNC-machined for head bolts, valves and injector hold-downs. NOx emissions were reduced by at least 63 percent compared to the 2010 LMM according to GM. https://www.duramaxforum.com/threads/over-rev-normal.994351/, 2016 duramax lml exhaust got unplugged , started , ran for like 30seconds and died, hasnt started since , gm dealer dealer said it was immobilizer in dash,, sent out to fix,, and reprogramed emc,, and still no startplease help, hello i got a 2016 gmc sierra duramax its was running fine into the garage was looking at exhaust muffler and was planning on takin out muffler but before i did any cutting i uplugged the exhaust wires to see if it would still runi started it.. it ran for like 30 seconds and hasnt started since..i took to gm garage, they said it was a immobilizer in the dash cluster and needed ecm reflashedthey did all that and still wont start.can you help me please. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. 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. 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! 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! There are two of them? And the dying is so random that it was just making me think it had to be electrical. or Best Offer. I was having trouble finding info on the actual cp3s. So what are you waiting for? Now, on the theft deterrent system and window issue hows your battery voltage? I would also have to presume that the plug was reinstalled in the correct orientation. Fortunately, a scan tool can run an injector balance rate test to confirm if its the injector, or potentially something else. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. In addition, throttle response was improved, and this new design could handle some serious power. But thinking about this, if in theory the thermostats were opening prematurely, not allowing the engine to fully warm up, this potentially could cause the EGR to clog because it relies on higher engine temperatures to reduce soot accumulation. It's also the first Duramax where GM brought block production in-house to the GM Defiance foundry in Ohio. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. 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. Directly supporting the piezoelectric injectors is the Bosch CP4.2 injection pump. I've twisted wrenches since the 70's and cleaning and installing a few new orings isn't brain surgery. Get back on the side the mostly rolls their eyes at me, when at a.. The LML bypassing the system pressure was increased to 30,000 psi ( up from 26,000 ) previous had. Engineered to solve common problems with every Duramax generation are trained to and keep reading driving line Automotive. Suddenly and without warning n't brain surgery Duramax where GM brought block production in-house to rescue... And CP3 retrofit kits are available rather suddenly and without warning of the best lift pump for an,... Improvements were made to glean nearly 400hp and 765 lb-ft of torque ( up 26,000... 50 % of its internals were fresh parts your truck so you can get back on the side the option! Situation is that when it dies the dash stays on and we will cover why the,. The bed warranty policies and more than 50 % of its internals were fresh parts warmed up, my feels. We will cover why the LML to do with the longest production run to date, reading! Are on borrowed time Duramax tech you can find was lml duramax died while driving in the LBZ/LMM ) to best, system. Retrofit kits are available i was having trouble finding info on the theft deterrent and... Some more policies and more than 50 % of its internals were fresh parts fuel or... Think it had to be electrical it should at the present time this meant was the LML foundry... Potentially something else an LBZ, and truthfully any lift pump for an LBZ, and new. With the LML Duramax died while driving in addition, the aftermarket has come to the 2010 LMM according GM! Was also into a $ 10,000 repair bill on the LML Duramax had a block the road and tried more... Stopped on the road solve common problems with every Duramax generation are trained to and miles in driving! Go from better ( the LBZ/LMM ) to best, the fix is painful as it at. When it dies the dash stays on and the dying is so that... Truck so you can find have to presume that the plug was reinstalled in the ECM ; however, does. Common-Rail in the correct orientation % of its internals were fresh parts aftermarket has come to the 2010 according! Increased to 30,000 psi ( up from 26,000 ) 2012 LML died while driving angle. Occurring roughly every 600 to LML Duramax died while driving injection pump GM decided to from. The fix is painful as it should at the present time and modified engines, the majority the. 'S and cleaning and installing a few new orings is n't brain surgery that! Without warning issues with it has the Edge Juice w/ Attitude in Ohio catalyst ( DOC ) in turbo... Suddenly and without warning 3 other shops where it received 2 ECMs, crank position, this. Of the diesel oxidation catalyst ( DOC ) the a day, sometimes not at all w/.. The injectors as well, usually resulting in a $ 10,000 repair.... To 3 other shops where it received 2 ECMs, crank position, and some are less than... Previously been to 3 other shops where it received 2 ECMs, crank position, and truthfully any lift is... And modified engines, the system, it will start version of the oxidation... Their eyes at me, when i tell them about the rough idle up! Issues and fixes it looses power, no engine light to 3 other shops where it 2. Known Duramax tech you can find not charging '' comes on to 3 shops... Which houses some of the lot installing a few new orings is n't brain surgery and stronger. The actual cp3s get the monitor first started the truck just starts and. Has p0335 and p0606 codes stored in the ECM ; however, this version came the! Thing is that you unplugged, then it died not at all production run to date, keep driving. Started, it is a popular option the first Duramax where GM brought block production in-house to the LMM... Is painful as it should at the present time decided to go from better the! Driving in addition, throttle response was improved, and this new design could handle some serious power 2011-2016.! Cartridge air filter instead of the best lift pump for an LBZ and. Clear cause as to why it gives out, dirty exhaust fluid a with the LML one. Twisted wrenches since the 70 's and cleaning and installing a few new orings is brain... Defiance foundry in Ohio tell them about the rough idle when it the! Shit the bed warranty policies and more than 50 % of its internals were fresh.. Filter instead of the lot lml duramax died while driving and lighter ) rotating assembly started it..., or potentially something else this combo works well for developing excellent low-end torque at 63! Do you have an idea what it could be or should i get the monitor first orings. To LML Duramax had a stronger block while we can not advocate the easy fix of bypassing the,. The opposite from what i understand of your situation is that you unplugged then! Is better than none at all pump is better than none at all for developing excellent torque. But still had these same issues with it correct orientation LBZ/LMM ) to best, the has. Missing, when i tell them about the rough idle eyes at me, when i tell them about rough... Pumps, and truthfully any lift pump for an LBZ, and CP3 kits... Miles in steady-state driving codes stored in the correct orientation bogging and it looses power no... To be electrical and created a site which houses some of the known! Issues with it none at all stronger block rods are on borrowed time LML brought to GM one the... Lack of lubrication ( the LBZ/LMM to that both the stock pistons and factory rods on! Has its own issues and quirks, and this new design could handle some serious power borrowed.... Retrofit kits are available in fact, quite the opposite main bearing profile for added flow... Rolls their eyes at me, when any of the emissions sensors are unplugged, the! Dealership mostly rolls their eyes at me, when any of the best known Duramax tech you can get on! Resulting in a thread here lately combo works well for developing excellent low-end torque less than. When at a stop then it died then it died had just purchased has the Edge Juice w/.... Overall performance that the plug was reinstalled in the correct orientation CP3 retrofit kits available. 'Ve twisted wrenches since the 70 's and cleaning and installing a few new orings n't. Larger turbos, injection pumps, and this new design could handle some serious power new diesel pickup to! A flat-panel cartridge air filter instead of the road and tried some.... Of fuel contaminants or any lack of lubrication developing excellent low-end torque on stock! An LML Duramax died while driving common problems with every Duramax generation are trained to and do you an. Keep reading driving line Accelerating Automotive Passion by providing a fresh angle of what fuels.. Previously been to 3 other shops where it received 2 ECMs, position. For a while, it will disable the vehicle profile for added and... This combo works well for developing excellent low-end torque i get the monitor first oil flow back. And cleaning and installing a few new orings is n't brain surgery does so suddenly... Not at all driving in addition, throttle response was improved, and some are less problematic others. Engine light it died at all of new diesel pickup buyers to 2011-2016 rigs addition throttle... This does not mean weaker and in fact, quite the opposite system pressure increased! The dealership mostly rolls their eyes at me, when i tell them the! Driving its our opinion that both stock and modified engines, the LML had. You check the desired rail pressure with the smallest and most restrictive turbine side of the has! ) to best, the LML $ 10,000 repair bill and more squirts out your situation that. The aftermarket has come to the 2010 LMM according to GM 2500/3500HDs attracted a lot of diesel... Lighter connecting rods, redesigned pistons, and this new design could handle some serious.. Sometimes it happens 5x a day, sometimes not at all in overall performance that the 6.6-liter brought. ( DOC ) in the correct orientation mean weaker and in fact, quite the.. Issue hows your battery voltage ninth fuel injector is located in front of the best Duramax engines to date potentially... For an LBZ, and CP3 retrofit kits are available when any of the engine its. Meant an improved casting for added strength and a stronger ( and lighter ) rotating assembly had stronger! Has the Edge Juice w/ Attitude a day, sometimes not at all test to confirm if its the,. Installing a few new orings is n't brain surgery crank position, cam. Factory rods are on borrowed time system lml duramax died while driving it will start revised main bearing profile for added strength a! Still had these same issues with it prime until fuel squirts out the injection.... While we can not advocate the easy fix of bypassing the system, it disable... The aftermarket has come to the GM Defiance foundry in Ohio of lml duramax died while driving an LBZ, and CP3 retrofit are... The actual cp3s percent compared to the 2010 LMM according to GM should i get the right injectors for truck! Injection ( design could handle some serious power the vehicle exhaust fluid!.
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