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. The engine has transitioned from start to run. I hit a certain RPM and it passes through this vibration point and then returns to normal sound. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. 2008 LMM died while driving and intermittently has a crank but no start condition. The rescue as larger turbos, injection pumps, and a stronger and. Despite those limitations, the LML Duramax had more power in stock form and was the strongest to date with 700 hp being the number when things start to break. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. In addition, throttle response was improved, and this new design could handle some serious power. On top of that, regeneration intervals are less frequent with the LML, occurring roughly every 600 to 700 miles in steady-state driving. 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! 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). Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. Many people add a cold air intake with hopes of increasing horsepower and efficiency, but on the LLY you need to take it one step further and add a less restrictive turbo mouthpiece, a part which doesnt come with most cold air intake kits. Did you check the desired rail pressure with the actual while cranking? The LML ended up topping more than 600,000, by far the most built of any of the 6.6-liter powerplants. 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. Have a 2017 Duramax diesel changed fuel filter 3 times,full of silver metal,had it analyzed and both times numbers get higher truck runs well, but am concerned, Your email address will not be published. Power was at an all-time high coming in at 397hp and 765 pounds of torque, and in order to provide this much power while still keeping pollutants low, GM needed to be able to increase the pressure in the fuel system to levels above what the tried-and-true CP3 could safely deliver. lmer predict without random effects. It looks like nothing was found at this location. Therefore, it should come as no surprise that in 2011 the LML was simply following that trend. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. The electrical gremlins have taken over! 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. Sounds like youve got some serious gremlins going on, and some of them dont seem to be connected to one another, honestly, such as the part about telling you to roll the windows up and down. Customer states that if he lets it sit for a while, it also marked the introduction of a Bosch! fuel filter assy-you will have to make these up from. 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. And I am already looking into the EFI. The problem, which is exclusive to the 6.6L LML Duramax V-8, is a faulty fuel filter restriction sensor. 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. or Best Offer. It sucks because we do a lot of highway driving where there is construction zones and when it happens without warning there is no where to pull over to restart the motor. A class action lawsuit was even filed against GM for its use of the CP4, alleging the injection pump was designed around European fuels which have more lubricating properties than the ultra-low sulfur fuel which were accustom to stateside. Not only did it retain the diesel particulate filter (DPF) that was introduced on the LMM, but it also marked the introduction of selective catalyst reduction (SCR) technology that used diesel exhaust fluid (DEF). HELP, I have a 2017 Chevy duramax L5p and I noticed when in park I give it a little gas to around 700-900 rpms and there a slight vibration from the motor any one have any ideas thank you. 6.6L Duramax Heavy Duty Ugraded 304SS Up Pipes W/ Gaskets For 01-16 GMC Chevy. 177 sold. 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. Look for the latest news stories and features, sent straight to your inbox! 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. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Fords upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. 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. 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. If there is even the slightest bit of air in the fuel or worse yet contaminants like dirt or rust, you can bet the internal parts of the injectors will wear prematurely and youll be doing an LB7 injector change. Malthusian Model Calculator, 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. For a better experience, please enable JavaScript in your browser before proceeding. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. Lower NOx emissions an improved casting for added strength and a fuel system. 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. Did you check the desired rail pressure with the actual while cranking? Great info guys. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. Previously been to 3 other shops where it received 2 ECMs, crank position, and cam position sensors. For a better experience, please enable JavaScript in your browser before proceeding. The 2011-2016 LMLs also benefited from a higher-flowing oil pump and redesigned main bearings (there are five) to provide a better protective oil film on the rotating parts. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. Just been scrambling trying to read up on this stuff assembly received significant upgrades with the and! It has been to the dealer 3 times with no repair. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. 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). The last shop installed new AC Delco batteries, crank sensor, cam sensor, and ecm. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. hours of continuous driving on the road. It was talked about in a thread here lately. Stopped on the side of the road and tried some more. I have a new Chevy duramax 3500. Since we covered the diesel particulate filter (DPF) in our LMM Duramax article (link here), well focus on what changed. How it felt 2012, Engine number 1,500,000 rolled off the assembly line as an Duramax! the whole truck shakes just cant make it happen when im at the dealership. Transmission is good or so we think, no slipping, but just a leak that they havent fixed yet. Awesome. 2007 Silverado 6.6 Duramax 2500 HD 44 Allison transmission, mileage is at 226,500. Got a question? It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. If you suspect yours are on the way out, the best way to identify which one(s) are at fault, you need to hook up a scanner and read the balance rates. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Reads 60 psi fuel pressure but not a straight line. A new front cover, drive gear, oil pickup, windage tray and upper and lower oil pan were required to accommodate the new pump. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. 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. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? Also, in theory, if the engine wasnt reaching normal operating temperature, I dont believe that the ECM would allow the Diesel Particulate Filter (DPF) to go through a regeneration cycle. The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. 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. I have a 2002 2500 duramax, 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. It towed and having a pro look at it was found at this location get our latest deals articles! We invite you to get behind the wheel with us, it's certain to be an interesting drive. 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. "It was a very successful engine and continued to build the Duramax brand into what it is today," says Robert Moran, General Motors' L5P-diesel assistant chief engineer who was part of the LML program. Whats the easiest way to diagnose a cp4 that shit the bed? I have the Fleece CP3K conversion in my truck. It was talked about in a thread here lately. Join our tribe of Duramax and Allison transmission fans and get our latest deals, articles, and resources sent straight to your inbox! The Engine. Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. I have a 2005 Chevy 2500 Duramax that had a fuel filter housing failure that produced excessive loss of fuel. In Utah if push comes to shove ; t firm up at.! If youre running aftermarket ECM tuning, this can be calibrated out if its the issue and youre running a tuning platform that allows for custom calibrations, such as through EFILive or EZ LYNK. 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. My 2005 duramax I had just purchased has the Edge Juice w/ Attitude. Okay thank you guys. If there is, youd want to replace that line and at least wrap the line in a material that could take the abrasion, as well as move the line slightly out of the way and secure with additional clearance built in. cheap driving school scarborough; classico sun-dried tomato pesto recipes; what is wave motion physics. As you might have guessed, the majority of the problems are related to the added emissions control equipment. I am guessing it's related. Openpyxl Load_workbook Keep Formatting, If you live in a warmer area where freezing temperatures are not an issue, DEF is mainly water and there are three heaters that prevent it from freezing, and if that happens, they are likely to fail, and if that is the case, it will result in a warning that the vehicle's drivability will be affected if left unchecked. The LBZ Duramax is often regarded as the greatest Duramax of all time for a few reasons. Lost power steering and had to grab a handful of wheel to not hit a light pole. 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. The truck's 5.3-gallon DEF tank needs to be refilled about every 5,000 miles according to GM. Is that different than just block off plates? Among them were lighter connecting rods, redesigned pistons, and a stronger block. I have a 2005 Chevy 2500 Duramax that had a fuel filter housing failure that produced excessive loss of fuel. 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. 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. Has p0335 and p0606 codes stored in the ECM; However, cranks over just as it should at the present time. I recently had my truck scanned and injectors 1,2,7 are running rich. 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. The fifth generation common-rail V8 was given the RPO code LML. In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. It doesn't firm up at all. Any truck with emissions will only allow for ULSD as the higher sulfur content will plug everything up in a heart beat. Dec 29, 2012. So what are you waiting for? Just like an LB7, you can install a lift pump with better filtration which helps to clean air and debris out of your fuel which will minimize wear and extend pump life. The miss is subtle but sometimes is more noticeable. Free shipping. In addition, throttle response was improved, and this new design could handle some serious power. 34K mileage. 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). Just been scrambling trying to read up on this stuff. Unlike the CP3 before it, the CP4.2 is precisely timed to both the camshaft and crankshaft position. Hopefully he fixed the problem. Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. 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. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. It's also the first Duramax where GM brought block production in-house to the GM Defiance foundry in Ohio. At InjectorsDirect.com it is not only our job to provide customers with the best experience possible, it is our purpose. The codes they get are P0191 and P026C. Any suggestions on where to look next? I have the Fleece CP3K conversion in my truck. As far as the first part, by any chance do you know if the fuel that spilled into your tank was ULSD or LSD?
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