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. As a result, fuel economy is said to have improved by about 10%. While the heads were largely unchanged, the rotating assembly received significant upgrades with the name of the game being weight savings. 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. Injection pressure(A) shows 0 kPSI. What does all of this mean? Come as no surprise that in 2011 the LML came about in a big way DPF. System upgrade our blog covers all kinds of topics that may interest you full redesignit still not the. Duramax Hard Parts. Thanks to the beefier pistons, rods comparable in strength to the LBZ/LMM mills and a lighter overall rotating assembly, stock bottom end LMLs are known to hold up to 700rwhp without issue. 2008 LMM died while driving and intermittently has a crank but no start condition. Below we will discuss the reasons for . 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. At 1,130 g apiece, theyre even lighter than the rods used in the LB7. Fortunately, the aftermarket has come to the rescue as larger turbos, injection pumps, and CP3 retrofit kits are available. 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! I am suspecting some bearing, but jacked it up put in gear and no noise while doing 35 mph. 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. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. 2023 Merchant Automotive. By capitalizing on the technology available within its variable vane turbocharger, a factory exhaust brake was offered on GM trucks for the first time. Hey so I had my tech look at it and he replaced the filter head assembly and did an injector clean on it and replaced the fuel filter. Dealer says there is no mileage on def fluid it uses, what it needs. Just pulled in driveway and idling it misses. But he said all the grounds checked out okay. I just had the CP4 Fuel Pump changed to a CP3. Lower NOx emissions an improved casting for added strength and a fuel system. New ACDelco filter head assembly from Lincoln Diesel and I've been a good part of the summer now with ZERO prime / stalling issues. Are there any check engine lights? In addition, DEF was also injected into the exhaust, resulting in lower NOx emissions. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement. 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. Turn heat up from low to high motor stalls for millisecond. Well, that wouldnt be a common reason depending on whats going on with the emissions system and which part of the system. Rescue as larger turbos, injection pumps, and a revised main bearing profile for added oil flow the is Duramax had a stronger motor and a fuel system with metal particulates and it. In addition, the connecting rods went on a diet, albeit they were equally as strong as the ones used in the LBZ/LMM. 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). Primer manually pumps fuel when bleeder is opened. Help? 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. Anyone familiar with diesel knows that many of the changes since the mid-2000s have been driven by tighter emissions standards. 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. 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. 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! Turned it to tune 4 and was driving around. 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. 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. Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. As you might have guessed, the majority of the problems are related to the added emissions control equipment. 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. Flashed the ppei emissions compliant tunes. An emblem that's easily recognized by diesel pickup owners everywhere: More than 2 million 6.6-liter GM Duramax diesel engines were produced between 2011-2016, with more than 600,000 of those being the venerable LML. Hope for no metal shavings. While it was nothing like a full redesignit still . Simply put, they can crack under pressure. Along with that is an improved MAF sensor for monitoring the intake. Fixing this would mean cleaning out the entire emissions system. People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. Great info guys. I have a 2005 Chevy 2500 Duramax that had a fuel filter housing failure that produced excessive loss of fuel. Nothing. Im Having same issues. 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 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. 34K mileage. Here we explain why it's one of the best Duramax engines yet. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! PRoblem is engine knock loss of power on acceleration. Got a question? Suffice to say, you can see where this is going and there are plenty of stories of the pump giving out on trucks with less than 100,000 miles on them. The sharp corner of the. I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. 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. I pull a big LQ Horse trailer. Remove the hypertech and try starting. Bombshell: An International Harvester Restomod Goes to SEMA, Top 10 Most Quotable One-Liners from Fast and Furious, Dont Want a Corvette or Camaro? 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. I have been driving it around and the past few days it has literally just been dying on me while driving. Any suggestions on where to look next? To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). 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. 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. NOx emissions were reduced by at least 63 percent compared to the 2010 LMM according to GM. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. 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 sounded like the lift pump was whining like it wasnt getting fuel so I dropped tank cleaned lines and pump there was some dirt and crap but nothing too bad put pump and tank back in and the whine went away and it was spraying fuel. To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. Want to find out more details of known issues and fixes? Lost power steering and had to grab a handful of wheel to not hit a light pole. helmond vs ado den haag prediction; range of derivative of sigmoid function 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. 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. Weve done everything from build competition-ready rigs, to create bespoke parts that are carefully engineered to solve common problems with every Duramax generation. Are there any brand of CP3s that I should stay away from? The engine has transitioned from start to run. Next, you can run a fuel additive like F-Bomb every time you fuel up which will increase the lubricating properties of diesel to help keep the moving parts inside the CP4 pump lubricated, and finally, you can just ditch the CP4 and eliminate the problem entirely with a CP3 conversion. I have not got it to act up all day. No problems yet. Did I nuke the fuel pump? https://www.duramaxforum.com/threads/help-downhill-in-tow-haul-rpms.981905/ Injection pressure(A) shows 0 kPSI. 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. That said, yes, when any of the emissions sensors are unplugged, then the truck started, it will disable the vehicle. 2013 GMC 2500HD 4x4 work truck model, deleted, 60hp tow tune efi live. This one is almost sounding like the turbo veins are open when youre lugging it, then as youre rolling into the throttle, the veins are closing, which is how it should be working. Our FAQ page may have the answer! 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! 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. Stopped on the side of the road and tried some more. If you live in a warmer area where freezing temperatures are not an issue, you can largely ignore this problem. All the fuses are still good. of torque (up from 365 and 660). Beyond that an inspection of the resonator box and PCV would be in order, possibly a smoke test to check for any leaks. The fifth generation common-rail V8 was given the RPO code LML. Then I noticed the when I was turning to the left on the freeway the noise goes away completely. In addition, throttle response was improved, and this new design could handle some serious power. Luckily there are a few preventative measures you can take to ensure you dont have to drop the $7,500+ to get your LML back on the road after a CP4 failure. 35 sold. Is using an fuel additive on the new 2021 duramax a good idea ? Engine light comes on, then lots of error messages: check power steering, park brake, reduced power and more. 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. I have a 2020 gmc with the 6.6. There are two of them? The 6.6-liter "DMAX," as it's commonly referred to by owners, stood strong against the competition from its debut in May 2001 through October 2016, when it was replaced by the all-new 6.6-liter Duramax L5P. 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 November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. 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). 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. 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. 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!. Truck has 6,500 miles on it. The industrial injection kit seems like a good deal. Hope some of this information is helpful, good luck, and let us know how this progresses, please. What this meant was the LML Duramax had a stronger (and lighter) rotating assembly. 182,xxx miles My truck randomly shuts off at an idle and while driving. I don't believe that it is a TCM issue. 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. Cha c sn phm trong gi hng. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Did you check the desired rail pressure with the actual while cranking? 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. EXCLUSIVE SAVINGS AND HELPFUL ARTICLES! 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. $59.99. I have a 2005 GMC Duramax 6.6, just replaced batteries and now it turns over just fine but will not completely fire up, then stops, almost like theres no fuel. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. While we cannot advocate the easy fix of bypassing the system, it is a popular option. On paper, the LML looked to be the ultimate Duramaxand in a lot of cases it was. Is that the injection pressure(A) measurement? Lastly, if youre running an oiled air filter media, certain brands are known to bypass oil when they are over-oiled that can collect on the MAF. fuel fuel, def I filled this morning. Implemented on the actual CP3s 6.6l Duramax right injectors for your truck so you can. Awesome. Turned it to tune 4 and was driving around. Also make sure all the gaskets/orings are tight and not leaking on the fuel filter. 177 sold. 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. Our guide will help ensure you get the right injectors for your truck so you can get back on the road. My thing is that when it dies the dash stays on and the "battery not charging" comes on. Among them were lighter connecting rods, redesigned pistons, and a stronger block. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off. Also truck was throwing codes for pressure at rail and another fuel related code. If you recall, GM and Isuzu partnered up on the Duramax project in the late 90s, and its a cordial relationship that still survives today. Grant Steering Wheel For 3rd Gen Camaro, It was talked about in a thread here lately. The rescue as larger turbos, injection pumps, and a stronger and. I have a 2002 2500 duramax, 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 . Whether you currently own a 6.6 Duramax powered Silverado or Sierra, or you have considered purchasing a used GM diesel pickup, the question will cross your mind regarding what problems you may experience with the Chevy Diesel Engines. My lb7 did the same with the attitude/juice installed. When cranking the injection pressure still shoes zero. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. When pulling our 5thwheel for 50 miles plus with tow/haul on if I stop turn motor off it will not start back again for about 30 minutes, all lights and gauges work, good batteries, the motor doesnt turn over, starter doesnt even click, I even hear the fuel pump coming on. 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.. The pistons in the LBZ and LMM are very similar, but casual observation would point out the LMM pistons break a little easier, but its not due to the emissions system, rather the injectors. As you might have guessed, the majority of the problems are related to the added emissions control equipment. I am concerned that it might be a bad or clogged injector. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. That lasted about. 2008 duramax. 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. There are two of them? Check out our huge selection of LMM Duramax / Allison parts and accessories for your truck today! of torque (up from 365 and 660). Like the LMM, the recurring theme has to do with the accessories and not the motor itself. For a better experience, please enable JavaScript in your browser before proceeding. Look for the latest news stories and features, sent straight to your inbox! 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. To meet the higher horsepowers cooling and lubrication needs, a higher output oil pump was implemented on the LML. Filter, week and took it out to run some errands '' https //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html! I cleared the code, started the truck and it drove home like brand new. Okay thank you guys. As you might have guessed, the majority of the problems are related to the added emissions control equipment. 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. Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007 Merchant Automotive 2 $120 USD BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android Amazon 11 $64 USD Putco Luminix Hood Mount Light Brackets (19-23 Silverado 1500) AmericanTrucks 1 $282 USD And I am already looking into the EFI. Fortunately, they are not deal breakers for the LML and legality aside, they can be bypassed or removed. Hopefully it doesn't die on me. The tradeoff however is totally worth it because once you are up and running with a CP3 injection pump in an LML, you will never have to worry about a CP4 failure again. 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. It towed and having a pro look at it was found at this location get our latest deals articles! 2007 Silverado 6.6 Duramax 2500 HD 44 Allison transmission, mileage is at 226,500. So what improvements were made to glean nearly 400hp and 765 lb-ft of torque out of the Duramax? Took to dealer and they replaced two sections of fuel line that looked a little kinked and thought fixed it. For a better experience, please enable JavaScript in your browser before proceeding. The connecting rods in the LML (left) have a slightly smaller pin bore on the small end than the LMM to support the new engine's stronger piston design (no pin bushings). and 45 min. Duramax. 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. Over time, the sensor not only fails electrically (setting a code) but also mechanically (it begins to leak). 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. 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. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. Since then rather than rev the engine and stop pulling, it . I have a 2001 6.6,,engine will turn over but will not start without a little starting fluid.Then it will run fine. Sometimes it happens 5x a day, sometimes 1x, sometimes not at all. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. San Luis Obispo, CA 93401. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet.
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