Duramax Stumbles On Acceleration

Duramax Stumbles On Acceleration

Also, sometimes when accelerating, the car stutters. I am pretty sure it is fuel. Engine bogs down during acceleration. At highway speeds, flat road, it would hiccup when I made any slight incline transition eg. I just purchased a new 2014 Touareg Lux TDI. 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 have a slight vibration in my rear end as im accelerating past 75 mph? 9 Answers. 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. An OBDII code checker identifies defects in the exhaust system of the car. We’ll break the trucks down into Five categories: Pre-Powerstroke (6. Seems to happen when trying to take off from a stop quickly, trans kickdown when trying to pass someone, or just accelerate a bit faster when exiting a 'school zone' or the like. I am continuing to have issues with a 2006 F250 SD 6. 0L Power Stroke diesel, including clogged EGR valves, sticking injectors, blown head gaskets, and other documented failures. One thing that seems to help me, though it is a sacrifice, is turning off traction control. Hey guys, wanted to see if anyone had thoughts on possible causes or solutions to this. When the warning light comes on, there's a possibility you either won't be able to accelerate or you won't be able to stop accelerating. Hey guys, wanted to see if anyone had thoughts on possible causes or solutions to this. Have a 2005 Ford Mustang GT. Shop at XDP for more of your truck needs! hesitation and. The noise is a whining type sound and stops when I let off the gas pedal or hit a bump. Pull off the expressway to a traffic light, put the car in park & back on to the expressway no problem. 3 Litre hesitates when accelerating at serveral different speeds, mostly noticable at lower speeds. 5 engines all applications from 92-00 on C/K pick-ups, G/P vans, Suburbans, and cab/chassis combinations. com FREE DELIVERY possible on eligible purchases. CarComplaints. Edmunds' expert review of the Used 2016 Chevrolet Colorado provides the latest look at trim-level features and specs, performance, safety, and comfort. "From the moment the engine is started, to its idle, acceleration and highway cruising, the 3. 06 Jetta stumble under acceleration VW MKV-A5 Golf/Jettas. 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 what I got: cable pull TB front 02's only no codes set nothing cleaned / cleared yet. 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. 05 chevy silvarado duramax engine loses power. The topic 'Diesel Turbo whistle question' is closed to new replies. It takes the limiter off of your RPMs and takes a lot of the hesitation and delay in acceleration out. Just got my '06 Duramax Crew (used with 23000 on it). 2005 F150 5. This just start with my 05 Silverado while my wife was out driving it. It eliminates the response delays from your electronic accelerator pedal, allowing your engine to respond faster and resulting in much faster acceleration. It has a bad hesitation under moderate acceleration around 2500rpm, but once it gets to around 2900rpm it doesn't happen (I assume this where the vvt changes over). Covers flat spot on acceleration between1500-2000 rpm. I had to replace the fuel pump about 2 to 2 thousand miles back. What happens if the MAP sensor is bad on my 1991 2500 454 TBI Suburban? What effects will be noticed. This is a discussion on need help with accelorator hesitation within the General Help forums, part of the LSx Technical Help Section category; My 2000 Z28 has a hesitation when i accelerate medium to hard. Ever since we pulled off the lot it stumbles when accelerating from a stop. need help with accelorator hesitation. You may also keep track of how 0-60 times of Chevrolet Silverado 2500HD changed across years and check out the model's competitors with the same acceleration performance. Every half second or so it misses and the tack drops about 100 RPMs. IE hard accelerate from say 2k rpm, it pulls to say 3500ish and starts to stumble and cough, if I hold throttle position and let it stumble through, it clears and runs smoother as load goes away and rpm increases. This could mean the fuel pump is struggling to keep up with the increased need for gasoline. Almost immediately, I began to feel a periodic hesitation during shift from 2nd to 3rd. 3 Powertroke, 6. flash forward to this weekend. You may have to register before you can post: click the register link above to proceed. On very light accelerator pedal applications when the torque con-verter is locked, a hesitation, shutter, or stumble may be felt. ” So, why the hesitation still?. 2012 Chevrolet Pickup (LML) 6. So cleaning the TB fixed the hesitation in the acceleration and such. Duramax white smoke during acceleration Chevy Diesel Diagnostic information for 6. It has a pretty bad hesitation when accelerating, even when running at speed and smashing the pedal. 5 TD specialists, a brand new HD GM transfer pump/oil pressure switch/sending unit, aka: OPS Switch. This might be good info for anyone trying to diagnose a surging/dieing problem, more commonly associated with the 03/04 trucks. It stores a database and records the relationships between rate of acceleration and throttle opening. I'd personally take it back to the garage if you've just bought it and get them to investigate, if it is a sensor issue it'd be costly after its out of their cover. I ran it for some time with it set up as the previous had it: ported vacuum. The idea behind a colon cleanse process is to eliminate the toxins which have built up in your digestive system. be careful with your valve cover gaskets so you can possibly reuse them they are 60-80$ for one side at the auto stores, international dealer was 32$. Engine controller needs reflashing to fix. I notice that the throttle response is very slow. If will not let you give it gas to quick. 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. Under moderate acceleration, 45-75% acc pos, I feel an apparent miss as it were, in a rhythmic form. This means the sensor is designed to read up to 1-bar of atmospheric pressure difference. I pulled the code for the check engine light and got: P0171 - System Too Lean (Bank 1) OBD-II Trouble Code: P0171 System Too Lean (Bank 1). Drastically increase your throttle sensitivity for quicker turbo spool up with the BD Throttle Sensitivity Booster for your Cummins or Powerstroke. Although the computer actually does all the air and fuel adjustments, it is the oxygen sensor's job to tell it which way to go. This is a real safety hazard when traffic is heavy. Also I forgot to mention in the original question that when I turn the car off after driving it any length of time or distance it has a heavy smell of gas coming from the engine bay and the exhaust, also i'm getting pretty poor gas mileage, about 300 miles to a full tank on all freeway. This just start with my 05 Silverado while my wife was out driving it. Duramax WOT hesitation????? Thought trans was slipping until I watched the tach and saw the needle just sit at 3K RPM after 2 seconds it upshifts. The EGR valve is a component of an automobile’s exhaust circulation system that reduces pollution-causing emissions. Howling under acceleration at various speeds, however, indicates that the gears are already worn out or are out of alignment or depth with each other. DPFE Sensor and EGR Information. I have an 01 z71 extra cab and it makes a noise while accelerating. If yours are original, then that could be the cause. Just Before I take off, it almost bawgs down for a second then proceeds to accelerate like normal. I can pump my primer and get more fuel in the filter occassionally and before I do this I get hesitation under medium to hard acceleration. be careful with your valve cover gaskets so you can possibly reuse them they are 60-80$ for one side at the auto stores, international dealer was 32$. The noise is a whining type sound and stops when I let off the gas pedal or hit a bump. Check out how to get the best acceleration from your diesel as we drive to win. Overall poor vehicle performance; rough idling, stalling, hesitation on acceleration, etc. 9l auto 2wd about 170k miles, normally a good strong smooth running truck. A clog means the flow of gas to the engine is restricted and this abnormal combustion ultimately reduces the car's power and responsiveness. This is worrying me because I don't know how serious it is…The truck runs fine and gets the same fuel mileage that it always did and there are no codes…It has the Allison transmission and the Duramax 6. When I stick my foot in it, this set up smokes more than all of them, but damn, does she run!. 5 engines all applications from 92-00 on C/K pick-ups, G/P vans, Suburbans, and cab/chassis combinations. I just feel like the car has electrical problems and that is what causes the hesitation. However, the Duramax certainly holds its own at 397 horsepower at 3,000 rpm and 765 pound-feet of torque at only 1,600 rpm. Hesitation just before acceleration. Changed fuel filter, still does it. I've read a lot about hesitation issues with but nothing beyond a lift pump issue. Any suggestions? Mike - Answered by a verified GM Mechanic. I have a 2005 GMC Sierra with the 5. Some time it was not working, and stuck on about 0,85 volt reading , if i am not mistaken its reads for rich mixture. Also I forgot to mention in the original question that when I turn the car off after driving it any length of time or distance it has a heavy smell of gas coming from the engine bay and the exhaust, also i'm getting pretty poor gas mileage, about 300 miles to a full tank on all freeway. I ran across an article that pointed out that SBC used full vacuum. 6L Duramax L5P Specs, Ratings, & Information. 4 GSI/DP Volvo Penta, 454 engine 1998 27 foot Doral, well last week I idled out of the bay which it ran just fine for about five miles then I pulled back to do a little trolling, after an hour I decided to pick it up and move to another spot and noticed that I couldn’t get on plan or accelerate over 2. I had the exact same problem. In other words, running great. 10-21-11 01:21 PM - Post# 2149685 My 2011 5. Mine does this as wellOnly when cold, only at right about 70MPH, Once warm goes away. Just Before I take off, it almost bawgs down for a second then proceeds to accelerate like normal. The engine is identical to the Isuzu 6H series platform, and only assumes the "Duramax" name in medium duty GM truck applications. I purchased a 2000 Ram 2500 for a couple grand and trying to get a handle on a couple issues i've noticed right away. Re: Hesitation Hmmm, sounds like its bogging down and not getting the air/fuel it properly on small throttle changes, maybe a dirty map sensor. 3 Powertroke, 6. It accelerates fine if I press harder and it is smooth if I take my foot off the gas. The live tune ($250) was great. We’re talking about the 6. Just got my '06 Duramax Crew (used with 23000 on it). The usual cause of engine ping is over advanced. 13,500 miles on it. Like ill be at a stop sign and ill push on the gas and it will not go anywhere for a few seconds and then like all of the sudden it clicks in and starts going. Engine , Transmission, Etc. We have a Chevy Silverado 3500 with Duramax Diesel and Allison transmission. 7 Powerstroke to discuss items that you should look out for and expect to deal with over time. Wiki User 02/20/2017. An EGR valve can fail in two ways: It can be open all the time, or it can be closed all the time. Change the Jerk from the stock value of 20 to 8. Worn drive axles will cause vibration under acceleration as well. For the former, the answer is simple. Mine were vibrating at 100k and slowly got worse until I replaced them at 128k. iATN is the world's first and largest online community of automotive professionals, where automotive technicians and other auto industry pros perform real-world vehicle diagnosis, and discuss theory, shop management, and other industry issues among their peers. 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. What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. However, A/F's are not perfect with 10. 7 L 350 HP Allison 3000MH In three years of full-timing and 33,000 miles, on four separate occasions upon accelerating from a stop at about 1500 RPM & 15 MPH it feels and sounds like the engine hesitates. During this it smells rich. Didn't want to have to post this, but oh well !!! At the current time there is nothing I can do to fix what is going on, when you delete completely the Intake Heater, Intake Air Valve, EGR system, DPF system and go in and shut down the DTC CODES for the eliminated components there is really nothing else I or anyone else can do. It feels like I'm driving on cobblestones. Latest News. 4 Powerstroke and 6. SSDiesel Supply ™ - Frequently Asked Questions. On very light accelerator pedal applications when the torque con-verter is locked, a hesitation, shutter, or stumble may be felt. A clog means the flow of gas to the engine is restricted and this abnormal combustion ultimately reduces the car's power and responsiveness. What Causes an Engine to Stumble Upon Acceleration? An engine stumbles during acceleration if it has a fouled spark plug, a vacuum leak, or a blocked airflow meter or airflow sensor. The symptoms are a "stumble" and what feels like an erratic loss of power when cruising around at partial throttle. Acceleration issue; A faulty throttle position sensor will not let your car accelerate normally. After it gets past 1/4 throttle it drives like normal like it did when I first upgraded these parts. The object has a mass of 12 kg. My question is regarding the tow haul mode for the transmission. The BOV is circulated back into the intake system. and some times it was just working normally. 1st of all, Im not new here I'm unitednations161. 8L Duramax or 7800 Series Duramax is an inline 6 cylinder turbodiesel designed by Isuzu. SYMPTOM SUMMARY The engine "pings" or knocks on acceleration. This might be good info for anyone trying to diagnose a surging/dieing problem, more commonly associated with the 03/04 trucks. I am still new to the RVing life and have a question about towing our rig. To some extent, turbo lag has physical causes inherent in turbocharger technology. There was a post on this a while ago, TSB 18-07-04 might apply to your vehicle if built from 12-10-03 through 2-2-04 and between engine #57130285 to 57149668. Compatible with GM vehicles built from 2005 to current that feature Active Fuel Management (AFM). Then you have to be careful not to run over the car in front. Using a scan tool, operate the EGR valve with the engine running. by Kyle McFadden. However, A/F's are not perfect with 10. Duramax diesel. There is a loss of power when I try to increase speed. Mine does this as wellOnly when cold, only at right about 70MPH, Once warm goes away. 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. The most common symptoms of a bad exhaust gas recirculation valve are rough or misfiring idle, detonation, stalling and hard starting. , then my truck slingshots forward. Duramax LMM DPF and ECM Programming Do's and Dont's Last updated 3-18-10 The release of the LMM Duramax has brought forth new emissions and new forms of tamper detection by GM. Thanks to all of you for your counsel--you nailed it! Dennis. He could not ID the problem. 6L’s fuel system. When she got home I took it out and quite easily replicated it. 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. its only on acceleration. Anyone else experience this? Any ideas on what it is?. If you notice a delay between the time you press on the gas pedal and the time the vehicle actually accelerates, take the car directly to a mechanic. It has a pretty bad hesitation when accelerating, even when running at speed and smashing the pedal. At highway speeds, flat road, it would hiccup when I made any slight incline transition eg. The only issue with the car is that while accelerating theres a vibration, a pretty decent vibration at that. acceleration bogging down 5 answers. PROTECT YOUR ENGINE against damage by preventing foreign particles from reaching the fuel injector or carburetor. My question is regarding the tow haul mode for the transmission. "From the moment the engine is started, to its idle, acceleration and highway cruising, the 3. We have a Chevy Silverado 3500 with Duramax Diesel and Allison transmission. 5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving. Have a GM car with a Duramax engine? Use these tips to get better gas mileage. His hands were always dirty, but the MAP sensor looks old. The test piece pictured above can be downloaded from. When she got home I took it out and quite easily replicated it. Latest News. 6L L5P V-8 Turbo Diesel Engine New information is starting to trickle in on the redesigned Duramax 6. The BOV is circulated back into the intake system. However, sometimes if I drive it hard (even after warming it up) the hesitation will show up. It has a bad hesitation problem when you try to accelerate You can build up speed slowly. no CEL though. That hesitation can be removed. General Motors' highly anticipated reveal of the next generation Duramax diesel was momentarily interrupted by inadvertently publishing details of the engine's 2017 model year horsepower and torque figures via GM's Powertrain division website. There is a loss of power when I try to increase speed. If you hear a whining noise or a whistling noise when you're accelerating, this could be the issue. I've fiddled and fiddled with the accelerator pump (installed new parts adjusted and adjusted) and it still does it. Another problem is if the air pipes to and from the inlet, inter cooler and turbo leak due to damage or loose clamps , the vehicle can experience similar problems. Acceleration Hesitation Hi All, I have just joined the Honda Civic Forum, as I guess with most its because its about vehicle issues first! yes I'm the same! So here it goes, if anyone can point me in the right direction, as I'm not clear if I have one issue or there is a few ganging up on me!. After checking the code I switched the throttle sensing to MAF (from AFM) usng Flashpro as per Hondata's advice and re set the ECU. Easy installation. I’ve had my new 2018 duramax for one week. Didn't want to have to post this, but oh well !!! At the current time there is nothing I can do to fix what is going on, when you delete completely the Intake Heater, Intake Air Valve, EGR system, DPF system and go in and shut down the DTC CODES for the eliminated components there is really nothing else I or anyone else can do. My truck is a 2007 CC TRD 4x4 V6 auto with 319,000 miles. 7 L 350 HP Allison 3000MH In three years of full-timing and 33,000 miles, on four separate occasions upon accelerating from a stop at about 1500 RPM & 15 MPH it feels and sounds like the engine hesitates. on my way into my 48 hour shift at work, truck is idling really rough, almost to the point of stalling. It has a bad hesitation under moderate acceleration around 2500rpm, but once it gets to around 2900rpm it doesn't happen (I assume this where the vvt changes over). The local shop said they replaced it, but it doesn't look new. Edmunds' expert review of the Used 2016 Chevrolet Colorado provides the latest look at trim-level features and specs, performance, safety, and comfort. need help with accelorator hesitation. There is about 1 second hesitation in acceleration when inching out into traffic then trying to accelerate. Have a 2003 2. Basically, at anything less than WOT, between 1500 and 3000 rpm, the power delivery isn't smooth. 5 engines all applications from 92-00 on C/K pick-ups, G/P vans, Suburbans, and cab/chassis combinations. I don't notice a common pattern to it or that it does it at certain speeds. The most recently reported issues are listed below. During this it smells rich. Duramax diesel. Includes solutions to these problems, advice on preventing them, and how to increase the reliability of the 6. If you don't find your answer below, please contact us for assistance. 1,777 posts Cummins and Duramax. I have a V-6 Milan with a similar problem, it had a hesitation from a very slow rolling stop and then hesitate when accelerating up,(like when rolling up to a red light and have it turn green right before coming to a complete stop). If rear differential noise occurs while accelerating the car only at a certain speed, it is likely because the gears have become worn due to overloading and lubrication failure. be careful with your valve cover gaskets so you can possibly reuse them they are 60-80$ for one side at the auto stores, international dealer was 32$. USUAL CAUSE Engine ping is the result of abnormally high combustion temperatures. Durring light acceleration and at low speeds (city driving 35 mph or so) the truck seeems to run fine. It feels like I'm driving on cobblestones. Part throttle and idle characteristics are pretty good, nice response. Anyone else experience this? Any ideas on what it is?. 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 what I got: cable pull TB front 02's only no codes set nothing cleaned / cleared yet. 8-liter Duramax diesel engine that I was recently able to test at the. ) Oil contamination in MAF connector or O2 sensor connectors. There is a loss of power when I try to increase speed. Set X and Y Acceleration to 800 and Jerk to 8. 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. rotor hat and son are all new besides taking into a shop and connect to a machine, ie a few dollars, are there any other diagnostics I can do to reduce it. The symptoms are a "stumble" and what feels like an erratic loss of power when cruising around at partial throttle. Hesitation when accelerating. Like ill be at a stop sign and ill push on the gas and it will not go anywhere for a few seconds and then like all of the sudden it clicks in and starts going. But if you let off the throttle it disappears instantly So based on that, im having a hard time thinking that it could be cv joints or a front end problem for that matter. I've got an '04 VW Golf that has recently taken to occasional bouts of no throttle response from the accelerator pedal. 13,500 miles on it. When I stick my foot in it, this set up smokes more than all of them, but damn, does she run!. In other words, running great. acceleration bogging down 5 answers. no CEL though. Accelerator Pedal Problems of Chevrolet Silverado - part 1 Chevrolet Silverado owners have reported 57 problems related to accelerator pedal (under the vehicle speed control category). It should be taken as an indication that there is a problem existing (or developing), that will potentially shorten the engine life, or result in unnecessary costs. New 383 - Hesitation on acceleration from Idle Hey guys, recently put in a new Blueprint 383 and 4 speed into my '70 (replaced a tired 350 and 350 auto). Read 2016 Chevrolet Silverado 2500HD Owner Reviews, Expert Reviews, Prices, Specs and Photos. I've got a miss and hessitation when accelerating. Upon acceleration, at times, I've notice a miss, then surge. PROTECT YOUR ENGINE against damage by preventing foreign particles from reaching the fuel injector or carburetor. pdf), Text File (. When I stick my foot in it, this set up smokes more than all of them, but damn, does she run!. "From the moment the engine is started, to its idle, acceleration and highway cruising, the 3. 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. 6 LB7 code P0380 Ok so here is the deal I have a 2002 chevy duramax 6. When she got home I took it out and quite easily replicated it. Arcilla stresses that the Colorado’s “signature diesel engine not only underscores an industry leap in acceleration, straight-line performance, and offroad capabilities, it also balances its output with improved fuel efficiency. Much more common, however, are failure modes in which the MAF sensor has become unreliable, underreporting or overreporting the true airflow into the engine. USUAL CAUSE Engine ping is the result of abnormally high combustion temperatures. Ford Superdutys with Powerstrokes are generally great, robust trucks, but they do have their problems. Duramax white smoke during acceleration Chevy Diesel Diagnostic information for 6. That hesitation can be removed. I've changed the Gasket, IAC, TPS, CTS, EGR Valve, Fuel Filter, Ran injector cleaner through it, Tested for Vacuum leaks, Checked Fuel Pressure, reset the air rate screw, and IAC. Occasionally when Im at a 20-30mph roll and accelerate hard pressing the throttle past 1/2-3/4 (opening all 4 barrels), I get a big. The symptom is more pronounced when the engine is at operating temperature. 2 engine and 8 speed transmission from a dealer in central Florida. 6L LML GM Duramax at Diesel Power Products. 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 what I got: cable pull TB front 02's only no codes set nothing cleaned / cleared yet. The computer uses this information to determine how much fuel is needed to maintain the correct air/fuel mixture and when extra fuel is needed if the throttle suddenly opens wide. 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. How can diesel fuel end up in the oil of a duramax? There are many things that could cause hesitation on acceleration in a vehicle. I was in auto (not paddle shifting) and suspension in Mode 4 with active handling off and sport mode suspension dry conditions. An engine hesitation at altitude of 5,000 feet between engine speeds of 1,200 to 1,600 rpm. They have all smoked, when under load, every one. 2005 F150 5. While engine is running it stalls like running out of fuel. If this is your first visit, be sure to check out the FAQ by clicking the link above. Under moderate acceleration, 45-75% acc pos, I feel an apparent miss as it were, in a rhythmic form. So cleaning the TB fixed the hesitation in the acceleration and such. Truck the one in the sig with 84,xxx miles. 0 Powerstroke diesel? This in depth article highlights the major problem areas and helps you find solutions to keep your truck running great. 6L Duramax L5P Specs, Ratings, & Information. Includes solutions to these problems, advice on preventing them, and how to increase the reliability of the 6. SSDiesel Supply ™ - Frequently Asked Questions. The pump is really loud when the pump is out of fuel and will have a muffled sound when pulling fuel. New Dirt Released on the 2017 Duramax 6. 6L Duramax L5P 6. I've fiddled and fiddled with the accelerator pump (installed new parts adjusted and adjusted) and it still does it. One thing that seems to help me, though it is a sacrifice, is turning off traction control. The noise is a whining type sound and stops when I let off the gas pedal or hit a bump. What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. I don't know much about the Duramax Motors, but I've had the Ford diesels steadily since 1984. I have a 2005 GMC Sierra with the 5. It still happens after a fuel filter replacement. 2002 chevy 2500HD 6. However, the Duramax certainly holds its own at 397 horsepower at 3,000 rpm and 765 pound-feet of torque at only 1,600 rpm. The experience is identical to other reports that I have read on this forumabout 15-25 mpg, the shift either misses or slips, power hesitates enough for me to lunge forward. Hello all, I have an '84 El Camino with a 305. org, is the worlds largest automotive enthusiast group exclusively geared towards the General Motors GM J-car platform including the Chevrolet Cavalier, Pontiac Sunfire, Pontiac Sunbird, Pontiac J 2000, Oldsmobile Firenza, Buick SkyHawk and Cadillac Cimarron. It seems to idle decently however when i put it in gear, and try to accelerate, i am barely accelerating at times, and when its at its worse, i'll have my foot to the floor and barely will be gaining speed. GMC Sierra 2500 HD Engine hesitates during acceleration Inspection at your home or office. Re: Hesitation during acceleration i just bought 1 of the uvc wire harnesses from the international dealer 22$ then w/ my fed ex discount it was 15$. Throttle/Pedal Position Sensor/Switch "D" Circuit High Input. Buy EVIL ENERGY Turbo Boost Increase Valve for 01-04 GMC Sierra Duramax LB7 6. PROTECT YOUR ENGINE against damage by preventing foreign particles from reaching the fuel injector or carburetor. got to work, noticed that mpgs had dropped by over 3 in just the. I just feel like the car has electrical problems and that is what causes the hesitation. Google say ‘our choice is. com/shop/theburbbilly My truck had a rough idle that varied it seemed depending on the weather so I figured I had a gaske. at idle and at low acceleration, my car totally hesitates! what can be wrong, the timing is set(16 degrees) and everything. SYMPTOM: Your 6. Part throttle and idle characteristics are pretty good, nice response. Worn drive axles will cause vibration under acceleration as well. But if the misfires get out of hand and occur too often, they can make the engine idle or run rough, stumble when accelerating, waste gas and fail an emissions test. The 2016 GMC Canyon has 1 problems reported for hesitation. 0 Powerstroke, 6. She recently has experienced a pretty big problem. Have a GM car with a Duramax engine? Use these tips to get better gas mileage. It has a bad hesitation under moderate acceleration around 2500rpm, but once it gets to around 2900rpm it doesn't happen (I assume this where the vvt changes over). It came to me with a new fuel filter already installed that didn't correct the problem. For 2016, the Colorado is available with a 181-horsepower, 2. Duramax LMM DPF and ECM Programming Do's and Dont's Last updated 3-18-10 The release of the LMM Duramax has brought forth new emissions and new forms of tamper detection by GM. Vehicle acts as if the transmission is slipping from 1-2. It is a component of the vehicle's fuel system. It accelerates fine if I press harder and it is smooth if I take my foot off the gas. 0L Powerstroke initially edged marginally above the Duramax in rated power, but the Duramax will regain that title with the release of the new RPO code LBZ Duramax 6600 in the fall of the 2005 calendar year. If there is some type of hesitation in acceleration, then the computer is not getting the correct information on the position of the crankshaft when the car is running. Most of the time it is when making right turns from a stop sign. Quite a few offroad miles and towing miles. 2012 Chevrolet Pickup (LML) 6. This means the sensor is designed to read up to 1-bar of atmospheric pressure difference. Common problems with the 6. Pull off the expressway to a traffic light, put the car in park & back on to the expressway no problem. Still in the original tank of diesel, and have 447 miles on the truck.