Duramax Stumbles On Acceleration

GM's newest diesel, the third offering in the Duramax family, is 3. An object is accelerating if it is changing its velocity. But it's nowhere near as impressive as the inline-six Duramax diesel that makes its debut in the '20 Chevrolet Silverado. Viewed 106k times 5. As of recently it's developed a hesitation under hard acceleration. My first Duramax was a 2001 LB7 with the 5 speed and the combination of shift speed and turbo lag never bothered me but when I bought the 2006 with the 6 speed Allison the first time I passed on a 2 lane I realized when there isn't a lot of extra room it is best to manually downshift before pulling out and that greatly reduced delay. Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing. Engine is a 5. CORRECTION: Clean the two Venturi ports and replace the Delta Pressure sensor. So I ordered my EFI live, EGR Blocker, and Edge Insight and got it all installed last week. I have a problem when I get to 40-50 mph my truck rumbles as if I have a bad tire you can feel it in the cab get over 50 iut smooths back out, it does not seem to be as bad in very cold weather, my check engine light came on the other day it was showing vaccum leaks I replaced the gas cap, it seemed to help for a while but now its back, any help would be greatly appreciated. 5TD Turbo Performance This site is in no way officially connected with General Motors, Chevrolet or GMC, Hummer or AM General or other. A point or an object moving in a straight line is accelerated if it speeds up or slows down. Avoid rapid acceleration if possible, shift manually when you can, and when starting out let the transmission fully engage before hitting the throttle. com adds that a defective knock sensor does not properly adjust the timing of the engine when fuel enters the cylinder. 0L Vortec LY6 inside Diesel Power Magazine. Of course its normal, Im well aware of the alternator doing this, we have a 2007 and 2008 3500 Duramax, 2010 1500 LTZ, 2011 1500 LTZ ( this one ) and a 2012 1500 LT, so Im well aware of the issues of these trucks, Im saying that my PCM has probably more issues since this voltage drop, and trust me as much as that needle drops, it also pegs max. 5 injection pump the regulator is built inside the return line fitting. At that point it really starts running bad, stumbles, Hesitates, and sometimes Coughs. Edmunds' expert review of the Used 2016 Chevrolet Colorado provides the latest look at trim-level features and specs, performance, safety, and comfort. 0 liters of high-tech innovation wrapped in an aluminum block and head. Bad hesitation on acceleration, NOT turbo lag! The engine is all stock except for efilive DSP5 tuning, I have ran a nicktane 2 micron fuel filter since the truck was bought new. I've noticed that it does it sometimes while at a cruising speed as well. One of the most common symptoms of a bad throttle body, or throttle position sensor, according to Reference, is when the car either hesitates to accelerate or stumbles during acceleration. Boost Bypass Instructions for the 1999-2004 SVT LIGHTNING and 2002-2003 HARLEY Davidson F-150 Supercharger Trucks. Average failure mileage is 12,050 miles. Men will find in LIPO-6 a reliable ally in their quest of getting a lean and muscular body. When I accelerate, the tack goes up but it seems the power is not there and acceleration is really slow, with that, there is what I can best call a hesitation and sort of popping feeling/sound. lack of fuel will just bogg the engine out not giving it a bucking or jercking feeling its a smooth loss of power. 6 Duramax Fuel Filter Assembly - Fit for 2004-2013 Chevrolet Silverado GMC Sierra 2500 3500, Replace # 12642623 12639277 TP3018 12664429: Fuel Filters - Amazon. However, when accelerating to highway speeds you notice that the truck will intermitantly jerk. The CRTD4® Twin-Channel Tuning system, for Petrol and Diesel vehicles, is at the cutting edge of digital tuning box technology and represents a revolution in vehicle remapping. This hesitation is what is widely regarded to as "lag. 6L LML GM Duramax at Diesel Power Products. Guaranteed Value Acceleration: Why, What, Where and How Anytime you outsource a core aspect of your supply chain, you don’t just want it managed, you want it managed more effectively. Amsoil Engine and Transmission Flush. At highway speeds, flat road, it would hiccup when I made any slight incline transition eg. Duramax diesel. When you contract for logistics services from Landair, we look for opportunities to deliver Guaranteed Value Acceleration. It should be more like 3-9, with lower number running and starting better but giving slightly more smoke. Mass Air Flow (MAF) Circuit Range/Performance. 3 - Acceleration Hesitation. The biggest improvement is the power and acceleration, which comes on much quicker now and honestly you need to take some time to get used to it. old-fashioned EFI Chevy with no lag before the acceleration begins. This is annoying and not like my 2003 Silverado. Below are the 11 most common reasons for a car or truck losing power when trying to accelerate:. RE: acceleration hesitation? Yes, our '07 does have serious hesitation between the pedal mashing motion and the car's actual movement. 5 trucks, all years, Including all C/K trucks, G/P trucks, Suburbans, Tahoe's Yukon's, Van's, School buses and Hummer H1's. 8 in the wife's B4, 3. 06 Jetta stumble under acceleration VW MKV-A5 Golf/Jettas. The odd part is, it only does it for a few seconds during the initial acceleration, or when I brake hard to a near stop and then accelerate hard again. Permalink Gallery Looking Ahead to 2017 Diesel Truck Models. I am pretty sure it is fuel. Another way to get your duramax into limp mode is to forget to replace the fuel cap, get on a on ramp and give 'er the beans! Apparently the fuel system doesn't remain pressurized properly and just when the duramax goes looking for an extra dose of fuel it gets none and gets crabby about it. Part# FLSHCN-EA. There isn't an excessive amount of body roll through corners and all versions have plenty of grip, although the four-wheel-drive. I have been debating on 1. Hey All Car: 2008 A4 2. Quite a few offroad miles and towing miles. If the engine runs poorly you should address that symptom first. GM 8L90 and 8L45 transmission problems have caused a proposed class action lawsuit that alleges the 8-speed transmissions are defective in the following vehicles in California, Illinois, Michigan. Find your favorite health supplements and natural beauty products here. So I ordered my EFI live, EGR Blocker, and Edge Insight and got it all installed last week. , then my truck slingshots forward. Ram Is a great all around truck. A point or an object moving in a straight line is accelerated if it speeds up or slows down. If you want to get a perfectly square hole for your oil drain fitting when installing your twin turbo kit, this is the JIG tool you will need. After a heavy acceleration followed by a tip out (0 pedal), both sensors should go to zero while coasting down. Warm the engine to operating temperature. And a few times i would be barely moving with low RPM, would go to accelerate in 1st, and nothing would happen. Fits 2001-2019 Chevy/GMC 2500HD/3500HD Duramax. We also changed the air filter from a little chrome 3 1/2" deal to a cone style that looks out of place but has to breath better. Once it gets up to normal operating temp full speed operation comes back but there is still a strange stumble/miss/surge while at crusing speed 60 to 65mph. I started noticing some excessive vibration of the chassis under acceleration about 4 days ago. Stumbles and runs rough at lower throttle positions (just off idle). Not remanufactured or rebuilt … NEW, in the box. Mine does this as wellOnly when cold, only at right about 70MPH, Once warm goes away. It also calculates engine torque output based on inputs such as fuel consumption, boost pressure, air density, temperature, throttle position and many other factors. Wow, what a difference!!! All the hesitation disappeared. If there seems to be just a bit of a delay between the time you push on the gas pedal and the time it takes for the car to go, a bad throttle body could be. When you accelerate hard it has no issues but on the slower accelerations it feels like it is having trouble shifting. Re: OMC stumbles on acceleration Got a vacuum leak easy way to tell. 5-2010 Duramax LLY/LBZ/LMM 113073000: Pressure Regulators - Amazon. • Downshift criteria revamped to best utilize engine torque curve and stay in each gear longer. 2011-2016 6. This just start with my 05 Silverado while my wife was out driving it. Well, I have been having the same problems that many of us on here are having with an iradic idle, hesitation under load, and sputtering up to like 3000 rpm. When you use kick-down or near full throttle acceleration, the convertor clutch unlocks. Well replacing the wires definitely helped the overall performance of the car - but it still has that rpm drop, acceleration hesitation issue. It's been said before, but that doesn't make it any less true: The 6. Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing. Bottom the idle mixture screw, but don't force it or you may break something. The Duramax makes the most power of the bunch, with 277 horses on tap, and the second-most twist, with 460 pound-feet. Welcome! If you have a truck with a GM 6. AMSOIL Engine and Transmission Flush (FLSH) helps restore fuel economy, increase operating efficiency and reduce emissions in gasoline and diesel engines, and automatic transmissions. A vehicle that hesitates while accelerating or while driving up a hill may have a weak fuel pump. You want all different amounts of load on the car at the different RPM ranges to get the best data possible. Part#2885X-D. 6L Duramax The blades are getting spun at a significant rate of acceleration as a result of the higher volume of exhaust pressure that is being squeezed by the blades leading to the engine to supply more horsepower. Now you should log the car, while driving with all ranges of acceleration, from 800RPM up to around 2000RPM. Stuttering/Sputtering when hard acceleration - and now Engine Light My 05 MCS stutters when I really get on the throttle, sounds like its choking, not getting enough air or running too lean. We do this by providing extremely high quality automotive service, following the theories and practices of Dr. There is about 1 second hesitation in acceleration when inching out into traffic then trying to accelerate. Seems to be worse in the morning while engine is cold. Detailed Vehicle Recall Notices and Technical Service Bulletins (TSBs) from ALLDATAdiy. on duramax diesel I have seen lopey idle/hesitation due to sticking fprv (pressure relief valve). where to start?. Chevrolet Silverado 2500 HD Engine hesitates during acceleration Inspection costs between $80 and $90 on average. Benefits Restores 9 out of 10 fuel injectors diagnosed as "failed". rolling stop sign re-acceleration) • Upshifts earlier in all conditions for improved fuel economy. This will cause no throttle response or poor acceleration. When coasting to slow down and then hitting the gas to speed up, there is a consistent 1 to 2 second delay before the engine responds and finally goes. The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the amount of exhaust gases that re-enter the cylinders. Good-flowing heads, a well-engineered camshaft, and the interchangeability of parts over the years (decades, even) help justify why GM's small-block V8 has reigned supreme for more than half a. its kind of like if you floor it and you kill the power and then turn the power on and off then on and then off then on and off. Diesel Power Products carries the Factory OEM EGR Bypass Valve for 11-13 6. I'm not sure what the cost on fixing the O2 sensor is, as my car was still under warranty, but a quick google search puts an OEM sensor in the ~$100. The same type of hesitation happens in every gear. However if no leak then, rebuild carb, clean all the filters, one in the fitting at the carb, one in the fuel filter. Viewed 106k times 5. Lly desiel white smoke on acceleration White smoke under acceleration - Mercedes Forum - Mercedes. If engine doesn't stumble and die, the ports are likely plugged. In stock form and even when substantially modified, GM's legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use. 3 IDI Motors), 7. Diagnosing Whining Noise When Accelerating. According to programmer display I'm getting proper fuel supply at rail. If it is this one try switching fuel tanks and just turn the key to run but don't start the engine. Revitol provides discount natural health and beauty products manufacturer direct to our customers. 6L Duramax 2006 Chevrolet 3500 with 6. 3 IDI Motors), 7. I've got a question about my 1989 Chevrolet K2500 4x4 pickup. Boost Bypass Instructions for the 1999-2004 SVT LIGHTNING and 2002-2003 HARLEY Davidson F-150 Supercharger Trucks. The cab is quiet and you barely hear the engine. What Are Symptoms of a Bad Oxygen Sensor? by Jason Medina. 3 Litre hesitates when accelerating at serveral different speeds, mostly noticable at lower speeds. That would be 16m/s change in velocity for that gear. WTF? I know it's still under warranty with my bumper to bumper extended warranty, but i. You want all different amounts of load on the car at the different RPM ranges to get the best data possible. You might be able to do a valve seal job with rope or air but a thicker oil should slow down the consumption a bit. its kind of like if you floor it and you kill the power and then turn the power on and off then on and then off then on and off. It takes the limiter off of your RPMs and takes a lot of the hesitation and delay in acceleration out. The 2019 Chevy 2500Hd Duramax handles extra like a traditional hatchback than a lot of its SUV rivals; it's genuinely pleasant to drive. The most effective-selling 2020 Chevy 2500Hd Duramax is the 148bhp 2. They make over 1,200 different replacement air filters for virtually every vehicle on the road. In stock form and even when substantially modified, GM's legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use. This truck also runs poorly when it's cold which I suspect is normal. Ford Superdutys with Powerstrokes are generally great, robust trucks, but they do have their problems. 6 people found this helpful. I'm not sure what the cost on fixing the O2 sensor is, as my car was still under warranty, but a quick google search puts an OEM sensor in the ~$100. This is a discussion on hesitation at 3000 RPM within the General Help forums, part of the LSx Technical Help Section category; G'morning all. the motor cuts in and out not the trans. Hesitation in acceleration, acceleration surge at both high and low speeds, delay in acceleration, etc. GM 8L90 and 8L45 transmission problems have caused a proposed class action lawsuit that alleges the 8-speed transmissions are defective in the following vehicles in California, Illinois, Michigan. at idle the voltage goes from 12 to 14 just bouncing around , i tryed the the MAF sensor cleaning and it helped somewhat i have already. Once it gets up to normal operating temp full speed operation comes back but there is still a strange stumble/miss/surge while at crusing speed 60 to 65mph. Most of the changes are to the emissions system, however there are a few mechanical changes. Should be interesting to see how it all plays out with the overhauled Duramax 6. It takes the limiter off of your RPMs and takes a lot of the hesitation and delay in acceleration out. Here's a list of several we don't commonly think of: a) the position of the moon and other heavenly bodies b) latitude changes (gravity increases towards the poles. so after running the old gal REALLY hard at extended RPMs last time we went and had fun, cranked her up yesterday and runs great then stumbles hard on acceleration edit; for awhile, its been back firing upon deceleration but until now no stumble. 0 TDI 150) and it. The pump is really loud when the pump is out of fuel and will have a muffled sound when pulling fuel. Acceleration Stumbles I recently put the Terminator setup on my small block, and I'm having some growing pains with getting it happy throughout all ranges. We do this by providing extremely high quality automotive service, following the theories and practices of Dr. Acceleration, rate at which velocity changes with time, in terms of both speed and direction. When you accelerate hard it has no issues but on the slower accelerations it feels like it is having trouble shifting. I have to LML that use the CP4 that is known to go out. The boost gauge would move but RPM's would sink way low. Duramax white smoke during acceleration Chevy Diesel Diagnostic information for 6. 6 Duramax Fuel Filter Assembly - Fit for 2004-2013 Chevrolet Silverado GMC Sierra 2500 3500, Replace # 12642623 12639277 TP3018 12664429: Fuel Filters - Amazon. 05 Duramax surging at idle. The truck is shifting awesome, has great boost, etc, I just would like for it to hammer from the start of the throttle jab without the hesitation, kinda like the LB7 does. Bad hesitation on acceleration, NOT turbo lag! I have a 2006 LBZ that is starting to give me problems, I have 122,000 miles on it and it is very well maintained. New to me truck. If this is your first visit, be sure to check out the FAQ by clicking the link above. I notice that the throttle response is very slow. my 2005 duramax keeps cutting out under acceleration and then wont rev beyond 2000rpm. The biggest improvement is the power and acceleration, which comes on much quicker now and honestly you need to take some time to get used to it. Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing. 3 Basic Causes of Stumble As with engines before the days of Electronic Fuel Injection (EFI), stumble had two basic causes- incorrect ignition and incorrect fuel/ air mixture for the required operating condition. On my way home, above 4500 rpm, there was hesitation and boost peaked at. We also changed the air filter from a little chrome 3 1/2" deal to a cone style that looks out of place but has to breath better. Chevrolet Silverado 6. Hey all! I just recently acquired a 64 Bug, and it runs pretty good. Two layers of change! If you're seeing this message, it means we're having trouble loading external resources on our website. As of recently it's developed a hesitation under hard acceleration. Stumbles and runs rough at lower throttle positions (just off idle). Diagnosing Whining Noise When Accelerating. Additionally, a bad knock sensor causes irreparable damage to the engine. RPM drops while accelerating. Check engine light on. A few random times my car stalled out. The torque under heavy acceleration will pin you to the seat. I suspect that it's there when driving around town but not as noticeable at slower speeds and/or starts and stops. proper acceleration (plural proper accelerations) ( physics ) The acceleration felt by an object, as opposed to the coordinate acceleration. Good-flowing heads, a well-engineered camshaft, and the interchangeability of parts over the years (decades, even) help justify why GM's small-block V8 has reigned supreme for more than half a. These filters are washable and reusable. Even though they were supposed to be 100,000 mile plugs I had one go bad / fail, and caused the hesitation at only 60,000 miles. The Chevrolet Silverado is a full-size pickup truck. CORRECTION: Clean the two Venturi ports and replace the Delta Pressure sensor. I've changed the oil, air filter, fuel filter, and most recently the spark plugs and it still does it. It should be more like 3-9, with lower number running and starting better but giving slightly more smoke. Diesel Power Products carries the Factory OEM EGR Bypass Valve for 11-13 6. The 'check engine' light is on, but it's been on for a while now, not necessarily because of me disconnecting the MAF sensor. Boost Bypass Instructions for the 1999-2004 SVT LIGHTNING and 2002-2003 HARLEY Davidson F-150 Supercharger Trucks. Only when the transmission temp reaches 120+ degrees does this issue seem to temporarily resolve itself. 5 liter diesel engine, this is the perfect site for you!. [SOLVED] Instantaneous Acceleration on a Velocity-Time Graph I need to find the acceleration at a specific time (for example, 6s). Almost impossible to get back and forth to work with it like this (8 miles each way) as it acts up so bad. When she got home I took it out and quite easily replicated it. 5) Acceleration Issues. My truck is a 2007 CC TRD 4x4 V6 auto with 319,000 miles. With a reduction in body fat love handles and lower back fat deposits begin to disappear as well. Viewed 106k times 5. General Dodge Competition and Performance Discussion. Changed fuel filter, still does it. A point or an object moving in a straight line is accelerated if it speeds up or slows down. It does not happen all the time; some days the truck wakes up and runs good, but more often than not, it sucks. Diagnosing Whining Noise When Accelerating. I have to LML that use the CP4 that is known to go out. Recommended when switching from standard oil to synthetic. According to programmer display I'm getting proper fuel supply at rail. Part# FLSHCN-EA. Ford Superdutys with Powerstrokes are generally great, robust trucks, but they do have their problems. Surging, hesitation under acceleration. In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use. I agree with other answer that there are several symptoms such as poor idle, stalls, or no starts. Under any acceleration but especially hard acceleration, the engine stumbles really bad. DIAGNOSE – ENGINE PINGS OR KNOCKS ON ACCELERATION. the tach read 0 yes zero and below, llights are dim and driving my tach reads normal untill i slow down the the problem reoccurs. Sports announcers will occasionally say that a person is accelerating if he/she is moving fast. Over the years these trucks have been really good performers, but they do have some common problems that we see over and over again. GMC Sierra 2500 HD Engine hesitates during acceleration Inspection at your home or office. The idea behind a colon cleanse process is to eliminate the toxins which have built up in your digestive system. This ones is for the Duramax techs. Though this doesn't happen all the times. • Downshift criteria revamped to best utilize engine torque curve and stay in each gear longer. Then all you need to do is just put together all the other turbo kit components and you can get your T3/T4 turbo kit on sale at a big discount. After 1800 or so, it runs fine. On the other hand, a petrol car might only manage. Some might really feel the steering is a bit too mild, nevertheless it's exact, making the car simple to place on the road. Look at the following with your scantool (as shown in Figure 7): throttle position, mass airflow (MAF),. The three major signs of fuel pump failure include: Hesitation during acceleration: The vehicle’s acceleration is slower than normal or the engine shuts down completely during acceleration. GMC Sierra 2500 HD Engine hesitates during acceleration Inspection at your home or office. However if no leak then, rebuild carb, clean all the filters, one in the fitting at the carb, one in the fuel filter. According to programmer display I'm getting proper fuel supply at rail. Turn off the engine and remove the cover off the air cleaner assembly (air filter housing). From the Demo Day, two startups will be selected to represent the SDG Impact Accelerator at a United Nations General Assembly side event in New York. Hello all, I have been fighting a problem with our 2009 Traverse. 2011-2016 6. 05 Duramax surging at idle. There are more than 33 items, which if faulty, that can cause engine hesitation and stumble problems. 2005 F150 5. ATS Upgrades for the Allison 1000 Transmission. Quite a few offroad miles and towing miles. Check out the deal on Factory OEM EGR Bypass Valve 11-13 6. This means that the ability to write new posts and access various member features will go away. The 2017 Chevrolet Silverado 1500 has 5 problems reported for hesitation. Stumbles on acceleration I have a 02 TB that I had just removed and cleaned Throttle body, and replace plugs on for the stumbling and wanting to die while Idling w/ AC on in morning problem. Hello all, I have been fighting a problem with our 2009 Traverse. The only issue with the car is that while accelerating theres a vibration, a pretty decent vibration at that. I am not totally familiar with a Duramax, but it could be what is called the pick up pump… this pump pulls fuel from the tank and supplys to the high pressure pump for the engine. I just wanted to check if there's anything going wrong with my transmission. Ram Is a great all around truck. When I accelerate, the tack goes up but it seems the power is not there and acceleration is really slow, with that, there is what I can best call a hesitation and sort of popping feeling/sound. txt) or view presentation slides online. BOOST LEAK LOCATOR GUIDE IF YOU HAVE INSIGHTS, CORRECTIONS, EXPLANATIONS, or REPAIR WRITE-UPS, PLEASE email me SO I CAN MAKE UPDATES! If you own a Twin Turbo, you've probably seen a lot of talk about BOOST LEAK. It has a skip/hesitation right off of idle, and at low throttle pressure. We’ve pretty much listed off all the performance specs for all 6. I have a problem when I get to 40-50 mph my truck rumbles as if I have a bad tire you can feel it in the cab get over 50 iut smooths back out, it does not seem to be as bad in very cold weather, my check engine light came on the other day it was showing vaccum leaks I replaced the gas cap, it seemed to help for a while but now its back, any help would be greatly appreciated. Hello all, I have been fighting a problem with our 2009 Traverse. When she got home I took it out and quite easily replicated it. Re: Hesitation under Hard Acceleration fuel would just bogg out like you said, misfire makes a miss, also lack of power but feels totally diff. I've read a lot about hesitation issues with but nothing beyond a lift pump issue. According to programmer display I'm getting proper fuel supply at rail. 3 Hesitation on acceleration Silverado Car Forums Automotive Forums. RE: acceleration hesitation? Well said, I thought it was the torque converter, but to start and participate in the drive, it connects perfectly. Now you should log the car, while driving with all ranges of acceleration, from 800RPM up to around 2000RPM. 42 locking differential, towing package - 4500 miles on odometer. , then my truck slingshots forward. Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. RPM Outlet brings you Instructions on How To do the Boost Bypass for your Supercharger Ford. If the engine stumbles, the problem was likely intermittent wiring problem or intermittent blockage problem; If engine doesn't stumble, operate the EGR valve manually, if possible. 6L, this truck only has 56K I just bought it and drives good on main roads but when i took it for the first time on the highway it would not go past 50 mphdoes any one with diesl experience know what may cause this???? No acceleration over 20-30 miles an hour. This causes the vehicle to lose fuel mileage and acceleration. P0101 MAF Circuit Range/Performance Technical Description. Issue I am noticing right off the bat is that my boost pressure is not nearly where it used to be. The Duramax employs fuel injection to deliver fuel to the engine under very high pressure. For the best answers, search on this site https://shorturl. WTF? I know it's still under warranty with my bumper to bumper extended warranty, but i. 6 LB7 diesel pickup or are looking to buy one, here are some common issues and problems we have run into in our shop. When I accelerate, the tack goes up but it seems the power is not there and acceleration is really slow, with that, there is what I can best call a hesitation and sort of popping feeling/sound. I ran across an article that pointed out that SBC used full vacuum. Surging, hesitation under acceleration. GM refuses to fix the. Permalink Gallery Return Diesel Injector Cores, Save Money on New Injectors. We do this by providing extremely high quality automotive service, following the theories and practices of Dr. I'm looking for some tuning input, Say i'm in traffic going about 40mph and I stab the throttle, there is a hesitation of like about 1 sec. where to start?. It doesn't just target a set RPM to show an impressive number - rather it pulls throughout the RPM and speed ranges - without the hesitation or surging so often common within the inline tuner market. Trucks, Trailers and Transportation - Duramax WOT hesitation????? - 86K mile 03 2WD DD/ Allison Auto has been hesitating/ bogging down at redline between 3-4 gear. There are more than 33 items, which if faulty, that can cause engine hesitation and stumble problems. [Archive] LLY Duramax Black Smoke LLY. The Allison 1000 transmission has been designed with many good features and provides a solid foundation for us to build on to handle high HP and torque loads. The Allison 1000 transmission is a 5 speed automatic with a single disc lock-up torque converter. Acceleration Stumbles I recently put the Terminator setup on my small block, and I'm having some growing pains with getting it happy throughout all ranges. I had the exact same problem. Hello, My prelude is having an issue that i am having a LOT of trouble identifying. I have put on approximately 600 miles. Fuel pressure regulator/check valve for all 6. This company is not yet accredited. When coasting to slow down and then hitting the gas to speed up, there is a consistent 1 to 2 second delay before the engine responds and finally goes. The three major signs of fuel pump failure include: Hesitation during acceleration: The vehicle's acceleration is slower than normal or the engine shuts down completely during acceleration. Overall poor vehicle performance; rough idling, stalling, hesitation on acceleration, etc. 1995 Silverado, 2wd Air, 5. Duramax diesel. Fits all 2006 and 2007 Chevrolet Duramax LBZ Pickup Trucks AND all 2007 – 2010 Chevrolet Duramax LMM Pickup Trucks. RPM drops while accelerating. 2014 Chevrolet GMC Duramax Diesel en CA - Free download as PDF File (. 6L Duramax diesel engine (RPO L5P) and Allison 6-speed transmission (RPO MW7) available in 2017-2018 Silverado, Sierra; and 2019 Silverado 2500/3500 and Sierra 2500/3500 models have several different operating characteristics when compared to the previous generation powertrain. com FREE DELIVERY possible on eligible purchases. It locks out the Hybrid system, still have all 4 gears forward; you loose some mpg but do not have the stalling or hesitation issue on acceleration. com has all the equipment necessary to clean and accurately test common rail (Duramax and Cummins 2001-present, including piezo) and H. You might be able to do a valve seal job with rope or air but a thicker oil should slow down the consumption a bit. Check engine light. This feeling is a result of the very high torque the Duramax is capable of. BOOST LEAK LOCATOR GUIDE IF YOU HAVE INSIGHTS, CORRECTIONS, EXPLANATIONS, or REPAIR WRITE-UPS, PLEASE email me SO I CAN MAKE UPDATES! If you own a Twin Turbo, you've probably seen a lot of talk about BOOST LEAK. When I accelerate, the tack goes up but it seems the power is not there and acceleration is really slow, with that, there is what I can best call a hesitation and sort of popping feeling/sound. 5-2010 Duramax LLY/LBZ/LMM 113073000: Pressure Regulators - Amazon. Also, I notice when I start from a stop it has a hesitation just after it starts to go. Lly desiel white smoke on acceleration White smoke under acceleration - Mercedes Forum - Mercedes. I have noticed about a dozen times now that the truck will have a surge/miss at certain speeds. It should be more like 3-9, with lower number running and starting better but giving slightly more smoke. After a heavy acceleration followed by a tip out (0 pedal), both sensors should go to zero while coasting down. Listen to the fuel pump for a change of noise pitch. Almost like a jerking while picking up speed. The same type of hesitation happens in every gear. Bad hesitation on acceleration, NOT turbo lag! The engine is all stock except for efilive DSP5 tuning, I have ran a nicktane 2 micron fuel filter since the truck was bought new. The feel is like someone is pulling you car backwards and suddenly everything seems normal again when i reach about 3200 RPM then vtec kicks, then red line. 6L Duramax 2006 Chevrolet 3500 with 6. The CRTD4® Twin-Channel Tuning system, for Petrol and Diesel vehicles, is at the cutting edge of digital tuning box technology and represents a revolution in vehicle remapping. However these are just guesses. The pump is really loud when the pump is out of fuel and will have a muffled sound when pulling fuel. Have a 2003 2. com adds that a defective knock sensor does not properly adjust the timing of the engine when fuel enters the cylinder. 6l Turbo Diesel Repair Experts Point out Common Problems. 6l lmm with h and s minimaxx program. Think of leaving the tranny in 2nd. If NOx2 does not go to zero shortly after NOx1, NOx2 is either faulty or the system is saturated with DEF. I'm looking for some tuning input, Say i'm in traffic going about 40mph and I stab the throttle, there is a hesitation of like about 1 sec. 3 Powertroke, 6. Seems to be worse in the morning while engine is cold. Check out the deal on Factory OEM EGR Bypass Valve 11-13 6. 5-02 - Page 5 - Diesel Bombers. ZL1 acceleration hesitation. I have a '04 Duramax that hesitates while accelerating.