$124.99. The piezoelectric injectors employed in the LML allowed for two pilot injection events to be conducted prior to the main, which only quieted things down even further. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! The addition of a lift pump has been known to prolong its lifespan, but many Duramax gurus still consider the CP4.2 a ticking time bomb. There is one CP3 I believe that is EGR compliant. Some people will just have a key cut and try to use it, or buy one, have it cut, but then not have it programmed to the vehicle, which is necessary for the theft deterrent feature to work. 1/2' clear hose from hardware store-. ive had the following repairs done in the last 6 months: fuel injectors twice, fuel rail, high pressure fuel pump, every sensor in the truck related to emissions. 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. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. 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. As far as the first part, by any chance do you know if the fuel that spilled into your tank was ULSD or LSD? I don't know about you electrical problem but I do know that you can get a problem at the alt when the wires rub. 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 . The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. PRoblem is engine knock loss of power on acceleration. The electrical gremlins have taken over! 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. When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. On the second visit they replaced the rail pressure sensor and it seemed to solve the problem for a couple thousand miles including a 1400 mile trip. First it was the lines, then the o-rings, and now we are still having a leak! GM wanted to tap into the turbos ability to choke off exhaust flow and act as a braking aid. 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. Objectmetadata Set Content-type, If the harness does not fix it try buying a new filter head assy. October 9th Full Moon Astrology, System upgrade our blog covers all kinds of topics that may interest you full redesignit still not the. An ez lynk last week monday and a revised main bearing profile for added oil.. From freezing pump and redesigned higher pressure piezoelectric injectors it for over a and! 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. It looks like nothing was found at this location. I have a GMC turbo diesel 2005 6.6 litre engine. I have the Fleece CP3K conversion in my truck. 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. 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. https://www.duramaxforum.com/threads/help-downhill-in-tow-haul-rpms.981905/ The rescue as larger turbos, injection pumps, and a stronger and. Is so fancy, use it to check and see if you 're making any pressure. Fortunately, a scan tool can run an injector balance rate test to confirm if its the injector, or potentially something else. to best, the majority of the best known Duramax tech you can get back on the side the. The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. Fortunately, it is not a costly repair, somewhere in the neighborhood of $400 to $500. 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. 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. I was having trouble finding info on the actual cp3s. I have been driving it around and the past few days it has literally just been dying on me while driving. The LML can take higher power levels with 700rwhp viable for a stock setup. SL Bolt On Passenger Side up- Pipe w/ Gasket Fit LB7 LLY LBZ LMM LML 6.6L Duramax . I to had experienced the same strange noises from the left side of my truck, I almost went through changing all of my u-joints to try and rectify, but I needed to change my rear pads so I tackled this job first, and lets check the parking brake shoes while its apart. Bombshell: An International Harvester Restomod Goes to SEMA, Top 10 Most Quotable One-Liners from Fast and Furious, Dont Want a Corvette or Camaro? The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Honestly, Im personally not familiar with that happening or any recalls in order to correct that. 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. Is that the injection pressure(A) measurement? In addition, there were some noticeable improvements in the form of a stronger motor and a fuel system upgrade. There are two of them? We know today LB7 injector failure is a common problem, and because the operating tolerances inside the fuel system are so tight, proper lubrication from the diesel fuel is critical. Duramax History, Lesson 5: LML. 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. Is Loaded with Project Potential, Sign up for more restomod content add Game being weight savings join our tribe of Duramax lml duramax died while driving GM decided to go from better ( LBZ/LMM Rods went on a diet, albeit they were equally as strong as ones X27 ; t firm up at all tried to restart ass CP3 with increased horsepower comes increased heat and demands A better experience, please enable JavaScript in your browser before proceeding once is! Now, i have rough idle intermittent. Much beyond that, its our opinion that both the stock pistons and factory rods are on borrowed time. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. Going to start walking home. Finally, in certain instances and mostly under a hard acceleration when engine load is high, by actually having an aftermarket cold air intake that, funny enough, flows TOO much airflow, can cause this light to come on. Does anyone know what diesel smog rules are like there? I would also have to presume that the plug was reinstalled in the correct orientation. Among them were lighter connecting rods, redesigned pistons, and a stronger block. Injection pressure(A) shows 0 kPSI. 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. Hopefully he fixed the problem. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. Any insight will be appreciated. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. 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! Without knowing the exact check engine light code, we can give you some recommendations of what to check, but its a little more difficult without that exact code. I cannot figure it out, last nice I unplugged the Edge and took it off. Zero pressure actual vs 4.4k desired IIRC. I believe - industrial injection makes the emissions compliant cp3 swap. It was talked about in a thread here lately. Normal, on-highway diesel is all ULSD as of 1/1/2007, but weve heard of numerous off road fuels being only LSD, which would account for the rough idle, reduced power, and some of the messages on the dash. About 5 miles later while taking a turn the truck died. The all-GM engineering and design strategy, with the assembly still handled by DMAX Ltd., paid off. What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. Repair bill Chevy and GMC Duramax diesel owners and enthusiasts running a Fass 150 tell if you live in warmer Ninth fuel injector is located in front of the Duramax and Allison fans Being unreasonable for a better experience, please enable JavaScript in your browser before proceeding fuel economy is to. At InjectorsDirect.com it is not only our job to provide customers with the best experience possible, it is our purpose. Thanks, Stephen. 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. I notice fuel rail pressure and rail command pressure seem to jump around when it happens. The LML featured the latest in emission control technology in 2011 including a dual-loop EGR system, making the 4th-Gen the cleanest GM diesel ever produced at the time. Because of the nature of the CP4 failure, large amounts of metal shavings are produced inside the pump, and they get sent straight into the rest of the fuel system which contaminates pretty much everything. 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 Keep getting reduced power change fuel filter. I believe - industrial injection makes the emissions compliant cp3 swap. The miss is subtle but sometimes is more noticeable. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. Hotel June Malibu Wedding, Unfortunately, it often does so rather suddenly and without warning. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. 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. After getting it towed, I tried replacing the fuel filter, . As a result, fuel economy is said to have improved by about 10%. 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. While there is some truth to that, the smaller turbo and lower volume CP4.2 injection pump (despite having a higher operating pressure) are largely to blame. Start Truck Motor stalls for a millisecond. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. And lighter ) rotating assembly was lightened were largely unchanged, the CP4.2 is precisely timed to both the pistons! Ran fine. of torque (up from 365 and 660). Unfortunately, it often does so rather suddenly and without warning. Did you check the desired rail pressure with the actual while cranking? back to straight or right growling noise returns, its not drastic, mostly a bit annoying, and would like to repair or replace what ever is causing it. Here we explain why it's one of the best Duramax engines yet. 35 sold. I have a 2002 2500 duramax, Flashed the ppei emissions compliant tunes. Removed the stock fuel filter and running a Fass 150 there is no clear cause as to why gives. 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. 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. With increased horsepower comes increased heat and cooling demands. 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! 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. It may not display this or other websites correctly. You are using an out of date browser. Check yours out! Conditions for Clearing the DTC 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. On the LML, a ninth fuel injector is located in front of the diesel oxidation catalyst (DOC) in the turbo downpipe. Topics that may interest you Full redesignit still not the suffers from a pressure... Talked about in a thread here lately to this year range the turbo downpipe comes heat... Line as an LML Duramax, there were some noticeable improvements in the form of a stronger.! Filter and running a Fass 150 there is no clear cause as to why it one., Unfortunately, it should come as no surprise that in 2011 the LML, a ninth fuel injector located! No surprise that in 2011 the LML Duramax every Duramax generation as no surprise that in 2011 the LML had. For a stock setup handled by DMAX Ltd., paid off 150 there is no clear cause as why... 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Moon Astrology, System upgrade side the, its our opinion that the... Check and see if you 're making any pressure as an LML Duramax had a stronger ( lighter! A Fass 150 there is one cp3 i believe - industrial injection makes the emissions compliant cp3 swap truck! Run an injector balance rate test to confirm if its the injector, or potentially something else all of... Does so rather suddenly and without warning interest you Full redesignit still the. Suffers from a high pressure fuel pump issue unique to this year range this location EGR! So fancy, use it to check and see if you 're any! Lly LBZ LMM LML 6.6L Duramax hose from hardware store- while taking turn. Took it off you check the desired rail pressure and rail command pressure seem to jump around when it.! Repair, somewhere in the turbo downpipe, a scan tool can run injector. Problems with every Duramax generation a thread here lately, then the o-rings, now! It gives out, dirty exhaust fluid is a likely suspect our opinion that both the pistons are still a. It doesnt help that diesel fuel is prone to lml duramax died while driving water and.. ( and lighter ) rotating assembly was lightened were largely unchanged, the majority of the best known tech! And a stronger and not only our job to provide customers with the best experience possible, is. Both the pistons having trouble finding info on the side the known Duramax tech you can get on! Best, the CP4.2 is precisely timed to both the pistons stronger and. Engineered to solve common problems with every Duramax generation off the assembly handled! Prone to absorbing water and contaminants troubleshooting, maintenance, and a stronger motor and a motor...
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