Silverado Hesitates On Acceleration

The contact owns a 2016 Chevrolet Silverado 1500. Are you experiencing whining noise when accelerating your car to high RPM speeds? This seems to be a common problem with many cars. it sounds as if you have a slipping clutch, you probably wont notice it as much in 1st gear but as you go up the gears it will become more apparent, I would suggest taking the car to your nearest GOOD mechanic for a quote on repair and inspection to ensure nothing else is wrong, you will more than likely need to replace clutch plate pressure plate and throw out bearing, may be a good time to. 5 turbo and having a fuel problem i think. So, when you crack the throttle, it bogs, doesn't advance and then revs and advances. Timing Belt failure symptoms. Any other ideas?. This database includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. Repair Information for P0300 Chevrolet code. The J-Body Organization, j-body. This key can become worn allowing the ignition trigger to become retarded causing the engine hesitation. Automotive Recalls and Technical Service Bulletins for 2011 Chevy Truck Silverado 2500 4WD V8-6. If you have Hesitation and surging on Blazer 4. Seems like now (maybe started a couple weeks ago, which is when it got colder here but not sure if that is part of it) when going down the road and trying to lightly accelerate i will get a hesitation. But last week while driving on the highway I noticed that when I put my foot on the gas to accelerate the truck with rev in the RPMs will go up but It wouldn't accelerate until I took my foot off the gas and pressed it again. this includes 2000 - 2004 chevroand gmc c4500 and 5500 trucks. If you think it acts like a fuel starve issue, check the fuel pressure, there is a Schrader valve on the fuel line, that you can connect a gauge to, you can get a gauge from autozone or oriellys, I am surprised the other "mechanics" did not do this, as it is a matter of minutes to check this. hesitation on acceleration, intermittent loss of power, engine misses at idle etc - pointing to a vacuum leak at or near intake manifold. Q: In April, I purchased a used 2018 Ford Edge with the EcoBoost 4-cylinder turbo engine and approximately 25,000 miles on it. To begin this DIY tutorial, we'll begin by checking the Silverado MAP Sensor for power. This happens ofter when pulling up a rolling hill or accelerating briskly from stop. Acceleration is defined as the rate of change of velocity. tsb 13-6-4 3. Chevrolet Silverado 1500 Engine hesitates during acceleration Inspection at your home or office. Buy ECOGARD XF33144 Engine Fuel Filter - Premium Replacement Fits Chevrolet Silverado 1500, C1500, K1500, Tahoe, Astro, S10, Avalanche 1500, Silverado 2500, K2500, Suburban 1500, Silverado 2500 HD at Walmart. When accelerating it surges,jerks and stumbles. Sometimes when accelerating the transmission downshifts and hangs in that gear until you let off the accelerator. When a engine is hesitating it will cause the car to lunge or surge which will cause a sudden jerk as the car slows. 3 Litre hesitates when accelerating at serveral different speeds, mostly noticable at lower speeds. Re: Hesitation under acceleration if you're not very skilled in soldering, take your ECU to a local radio/TV repair shop and have them replace the caps. Engine idles alittle rough with the A/C on but not irratic (steering wheel vibrates at idle). “Acceleration has a 'dead spot'. Ford named in class action over vehicles with 5. On a lean mixture under acceleration you are describing a noise known generally as 'pinking' - clicking as in rattling. I have a 2012 chevrolet silverado 5. also if you get down on it ,the truck will start to sputter and miss, like it needs fuel or something. An engine that hesitates, stumbles or misfires when accelerating or when it is under load, is an engine that is either sucking too much air, not getting enough fuel, or misfiring. This just start with my 05 Silverado while my wife was out driving it. Instead of get-up-and-go, you get hurry up and wait. It has 200k on it, and has a horrible low throttle input miss and a high idle at times. On several occasions, while driving various speeds, the brake pedal was depressed and failed to slow down or stop the vehicle. I also replaced the maf and that further smoothed out the idle and also fixed the rpm problem. You know how frustrating it can be when your car hesitates when you step on the gas. I recently cleaned the throttle body and made certain that the air filter is clean. Sometimes when accelerating the transmission downshifts and hangs in that gear until you let off the accelerator. View all 35 consumer vehicle reviews for the Used 2017 Chevrolet Silverado 1500 on Edmunds, or submit your own review of the 2017 Silverado 1500. This just start with my 05 Silverado while my wife was out driving it. 3l and I have noticed that there is a hesitation on acceleration in lower speeds. I got the car to go 70mph wjth normal rpms by very very slowly accelerating but the car is not drivable like this. An engine that hesitates, stumbles or misfires when accelerating or when it is under load, is an engine that is either sucking too much air, not getting enough fuel, or misfiring. The truck has 225,000 miles on it, about 100,000 on the motor. When engine hot on the highway, when second venturi of carb is opened the engine seems to die momentarily. But that was at temps in -30* C range. The GMC Sierra is a full-size, heavy-duty pickup truck. Car cruises fine up 4,000 rpm in any gear if accelerating gently. recent major tune-up performed 2 months ago. 0L 2008, 77 Series High-Flow Performance Aluminum Polished Cold Air Intake System by K&N®. This hesitation continues even with a warm engine. That power comes from the systems that control the fuel and airflow supply. Having a problem with the engine. I have a 2012 chevrolet silverado 5. I ran a datalog with WinALDL and the only thing that stood out to me were a bunch of rich flags. It would also be worth checking the crank angle sensor connection which is located (as you are in front of the car) at the "2 o-clock" position on the front of the engine behind the fan. I have started to have some. 3l and I have noticed that there is a hesitation on acceleration in lower speeds. Silverado Sputters during acceleration 9 Answers. Sprint Booster V3 Power Converter is a plug-n-play upgrade that eliminates throttle lag, giving your accelerator a quicker response time. After that change your fuel filter and check your fuel pump, and fuel pressure regulator. About 6 months ago, I noticed the engine sputtering or missing when I would accelerate (going up a grade or passing a truck). Drove car gently for first week, thereafter discovered when pressing throttle hard car abruptly hesitates on acceleration in any gear until throttle reduced. It soon recovers generally without stalling. Question: 2005 Ford F-150 is hesitating when accelerating. Silverado Sputters during acceleration 9 Answers. I took to dealer and they changed plugs and wires. Car hesitation is a symptom that shows an imperfect internal combustion in your engine. The #5 was loose on my 90 300TT just like Tim's. Note: This performance review was created when the 2016 Chevrolet Silverado 1500 was new. Chevy expands the eight-speed automatic's availability, adds Apple CarPlay integration, and gives its Silverado a new face for 2016. Hesitation upon acceleration Discussion in 'Engine & Performance' started by DuallyGuy, Sep 28, 2012. If your car exhibits common signs or symptoms of a failing fuel pump include rough idle, difficulty starting, and hesitation during acceleration, you may need a fuel pump assembly replacement. It's actually one of the most common reasons why a car jerks when accelerating. “Acceleration has a 'dead spot'. About 6 months ago, I noticed the engine sputtering or missing when I would accelerate (going up a grade or passing a truck). Car problem(s) with the 2014 CHEVROLET SILVERADO. To see how frequently Chevrolet Silverado 1500 problems occur, check out our car reliability stats. 99 Sierra hesitates during acceleration after cruising at speed for a while 14 Answers. 0 L V8 Engines (VINS V, T, U -RPOs LR4, LM7, LQ4) Condition: Some customers may comment on the following condition: * A lean hesitation, sag or stumble present during light to moderate. I've had an unusual issue with my 2011 Cruze stalling in acceleration, one that has not been diagnosed by multiple mechanics. It has serious hesitation when accelerating at slower speeds. The K&N high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction. I dropped the exhaust system BEFORE the cats, and the truck ran new! I suggest checking your cat…or cats. I took to dealer and they changed plugs and wires. If it is running too cool, that would explain why it runs better in cold weather. it has a slight hesitation on acceleration that I traced to a bad vaf sensor I have a analog scope and I can see slight opens in the trace, I am certain this is the problem, but I was wondering when you spray carb cleaner on the fuel injector o-rings and your oxygen sensor immediately goes rich and the tachometer jumps about 5 to 10. Engine hesitation, almost by definition, usually goes back to a misfire in one or more of the cylinders. I just got done replacing all the steel fuel lines underneath the truck because they rusted out and started leaking, checked for leaks and kinks, none found, but the hesitation is still there. The misfire is causing the hesitation; you just need to find out what's causing the misfire. Exterior; Automatic Headlights; Daytime Running Lights; Delayed Courtesy Light; Halogen Headlights; Heating, Ventilation & Air Conditioning; Manual Air Conditioning; Rear Window D. Chevrolet Silverado 1500 owners have reported 24 problems related to automatic transmission (under the power train category). This company is not yet accredited. been running like a top until lately. I use everyday to for work. I ran a datalog with WinALDL and the only thing that stood out to me were a bunch of rich flags. Acceleration sensor has two types; vertical acceleration sensor along vehicle advance direction and transverse acceleration sensor vertical to the direction of advance. $150 bucks to fix, and improvement in acceleration was immediate. 99 Silverado - Stumbling Stalling Hesitation Diagnosed. This condition is a safety issue as it hesitates pulling into traffic, surges in acceleration have caused loss of tire traction on ice covered roadways nearly resulting in a collision. If you think it acts like a fuel starve issue, check the fuel pressure, there is a Schrader valve on the fuel line, that you can connect a gauge to, you can get a gauge from autozone or oriellys, I am surprised the other "mechanics" did not do this, as it is a matter of minutes to check this. To address these concerns, Chevrolet has added safety features on the 2019 Chevrolet Silverado 1500 4WD to make driving the truck a safe and enjoyable experience for any driver in the family. When attempting to go from zero at a red light. Read more Chevrolet reviews to learn about other models. Some customers may comment on a sag or hesitation when accelerating under the following conditions: When coasting at low speeds of less than 15 miles per hour with a closed throttle and then aggressively applying the throttle. This cycling continues, especially when the engine is just started. Buy Pedal Commander Throttle Response Controller PC65 Bluetooth for GMC Sierra 2007-2018 (Fits All Trim Levels; 1500, 2500HD, 3500HD, Base, SLE, SLT, Denali): Pedals & Pedal Accessories - Amazon. Hesitation and surging on Blazer 4. Learn more about the 2011 Chevrolet Silverado 1500 Crew Cab. Get the best deal for Car & Truck Air Intake Systems from the largest online selection at eBay. Note: This performance review was created when the 2016 Chevrolet Silverado 1500 was new. If I floor it, it either is working or it's masking it well. The 2020 Chevrolet Silverado has a solid lineup of powerful engines, including a V8 with best-in-class towing capacity and a turbodiesel that gives this Chevy best-in-class fuel economy. Hesitation on acceleration and hard. I've experienced the hesitation and brake squealing you are talking about with my 05' FX4 and as well as my parents 05' Lariat and 06' FX4. there may be a three to four second lag in acceleration due to the Yukon, Avalanche, Silverado, Sierra, H2. The misfire is causing the hesitation; you just need to find out what's causing the misfire. I can be driving down the road and my truck rides fine. After that change your fuel filter and check your fuel pump, and fuel pressure regulator. once I get past 5-10 mph no problems. Sometimes when accelerating the transmission downshifts and hangs in that gear until you let off the accelerator. First, idling is a problem. All the pre-sets are still there but all I get is static on all AM and FM stations. It's a 2010 Silverado Z-71 LT Crew Cab with the apperance package, 5. If I floor it, it either is working or it's masking it well. See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. It will almost die, then resume normal speed. How To Fix Engine Hesitation During Acceleration - 39 Possible Causes P0101 P0131 P0300. The SI unit for acceleration is metre per second squared (m⋅s −2). This happens ofter when pulling up a rolling hill or accelerating briskly from stop. On several occasions, while driving various speeds, the brake pedal was depressed and failed to slow down or stop the vehicle. I thought it was bad gas or something. I also replaced the maf and that further smoothed out the idle and also fixed the rpm problem. If this sensor is telling the computer that the coolant temp is at 200 degrees, but it's actually only at forty degrees, the computer will command the injectors to introduce the wrong amount of fuel for a cold engine. 03 2500 silverado hesitation was created by lambo12k Problem: Slighty hesitation from dead stop when accelerating Codes: In the past in coldish weather it has throw the p0120(tps sensor) code and the other for accelerator pedal. Thump Bump Clunk When Accelerating While Coasting. The largest recall involves 69,500 2014 Chevrolet Silverado LD, 2014 GMC Sierra LD and 2015 Silverado HD, Tahoe and Suburban and 2015 GMC Sierra HD and Yukon and Yukon XL models worldwide, 57,512 in the U. If the Check Engine Light comes on, you may find any of the following codes: P0171, P0174 Lean fuel condition codes; P0120 to P0124 Throttle position sensor codes. If I back off the gas, it seems. I don't notice it during heavy acceleration, typically during a slow acceleration, most notably once I am in second gear (2nd gear, low RPM, engine under load). Car problem(s) with the 2007 CHEVROLET SILVERADO. we just bought a 2014 from the dealership with only 44k miles on it and noticed that it seems to hesitate while accelerating but after moving the problem goes away. About 6 months ago, I noticed the engine sputtering or missing when I would accelerate (going up a grade or passing a truck). When the car gets warm or just in general I start taking off and it takes off slowly and around 3000 rpms you hear the engine sounding like its gaining ground and thats when it starts picking up speed. The new style 4-cylinder engine has two camshaft actuator solenoids that have been having problems. So, when you crack the throttle, it bogs, doesn't advance and then revs and advances. I feel that the engine has a. hesitation on acceleration, intermittent loss of power, engine misses at idle etc - pointing to a vacuum leak at or near intake manifold. Home › Forum › Chevrolet › Silverado 2017 Transmission Issues. Page 1 of 2 1 2 Next > K10 Suburban Silverado Engine Size:. After that change your fuel filter and check your fuel pump, and fuel pressure regulator. 1 cylinder spark plug, check air filter, check intake gasket for a leak bunch more but. I also replaced the maf and that further smoothed out the idle and also fixed the rpm problem. Car 9000 CSE 2. The second is that acceleration appears to be poor, at least poorer than normal. The rate of acceleration is about 0 to 60 in 5 minutes and im not exaggerating. tsb 13-6-4 3. I use my Chevrolet pick up for work and play. To begin this DIY tutorial, we'll begin by checking the Silverado MAP Sensor for power. loss of power, hesitates on acceleration on 4. Make sure it is clean. Seek will not find any stations AM or FM. This lack of A/C typically lasts 12 to 15 seconds. Hesitation on acceleration and hard. Lately at the shop we’ve seen quite a few newer Chevrolet Equinox’s having some cold start up noise, which is usually accompanied by a hesitation upon acceleration. Was light at first, but got really bad to the point of almost no acceleration. Unless I accelerate very slowly, it coughs and stumbles and wants to die. Q: In April, I purchased a used 2018 Ford Edge with the EcoBoost 4-cylinder turbo engine and approximately 25,000 miles on it. I use my Chevrolet Silverado to tow my boat to the lake on most weekends and holidays. Some owners of a 2015 - 2017 Corvette or Corvette Z06 may experience a shake and/or shudder during light throttle acceleration between 25 and 80 mph (40 and 128 km/h) steady state driving when transmission is not actively shifting gears. But that was at temps in -30* C range. been running like a top until lately. Your 2016 Chevy Silverado has been outfitted with a new generation of GM V6s and V8s, which means that gas mileage, power and torque have all been improved. The throttle position sensor, TPS for short, is a sensor that is used in an internal combustion engine. No spark from the spark plugs. Pumping the gas does not help. So, every time you press on your gas pedal, you feel an instant response and a faster launch. An object's acceleration is the net result of all forces acting on the object, as described by Newton's Second Law. engine light comes on periodically every few days and stays on for a. Acceleration is defined as the rate of change of velocity. Typically when we report on the findings of an investigation from the National Highway Traffic Safety Administration, it's because the government body has discovered a safety issue and prescribed. I get a hesitation when I apply small amounts of throttle, If I push the pedal down, more like half to three quarters then the hesitation goes away and the truck accelerates. Learn more about our award-winning agency at AccelerationPartners. The 2016 Chevrolet Silverado 1500 gets adequate power from its base V6, according to automotive writers. The average acceleration is given by. My truck does the same thing at this turn leaving work but if I have it in M5 it is smooth as silk. If the engine either hesitates or stalls upon acceleration due to the carburetor, the carburetor's accelerator pump nozzle may need to be cleaned or the secondary throttle plates may not be closing all of the way. 0 L 300 hp Gas - 2003 Does your acceleration inexplicably hesitate or suffer from loss of power?. I have a 2007 Silverado 1500 that I bough new in 07 it has 115K miles on it. I basically have to crawl thr. Does anyone else with a NNBS have severe hesitation issues when taking off from a stop light? A few times in the past week it felt like my truck almost stalled when taking off from a stop sign or light. Get a free battery charging and engine diagnostic testing while you are in store. 2000 Silverado 5. You need to check the vehicle for an air leak, (maybe a vacuum hose come off), oxygen sensor on bank 2 not working, or a knock sensor having failed. Have had three opinions now that on my 2008 1500, 5. P0174 System Too Lean (Bank 2) Technical Description. When attempting to go from zero at a red light. YACT: Clunk from the front wheel area on acceleration, sometimes 16 posts Paladin "Wack. like if its trying to boost but then it doesnt but quick on /off. It's got 102k miles now. Apr 14 2005_Silverado replied Aug 23, 2019 at 7:29 PM. If I back off the gas, it seems. 3L and it's driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right. hesitation, the available Z71 Off-Road Package offers SkID pLATES, jounce bumpers and an AuTOmATIC LOCkING REAR DIffERENTIAL. To learn more, see reviews below or submit your. Engine idles alittle rough with the A/C on but not irratic (steering wheel vibrates at idle). First, idling is a problem. To see how frequently Chevrolet Silverado 1500 problems occur, check out our car reliability stats. 99 Tahoe - Trouble Accelerating / Hesitation Tahoe Car Forums. One hesitation some buyers have about driving a full-sized truck, though, is road safety. This company is not yet accredited. the ECU is located behind the radio. Seek will not find any stations AM or FM. Silverado Sputters during acceleration 9 Answers. Jerky Acceleration on 07 Silverado NBS w/L76 6. I dropped the exhaust system BEFORE the cats, and the truck ran new! I suggest checking your cat…or cats. When you look at the timing, the advance is working but it is controlled by the esc. Average failure mileage is 12,050 miles. The K&N high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction. 0 L 300 hp Gas - 2003 Does your acceleration inexplicably hesitate or suffer from loss of power?. it has a slight hesitation on acceleration that I traced to a bad vaf sensor I have a analog scope and I can see slight opens in the trace, I am certain this is the problem, but I was wondering when you spray carb cleaner on the fuel injector o-rings and your oxygen sensor immediately goes rich and the tachometer jumps about 5 to 10. 3 Hesitation on acceleration Silverado Car Forums. then look for a carb air leak spray around the base with carb cleaner if it inporves the idel then you have a leak. Engine idles alittle rough with the A/C on but not irratic (steering wheel vibrates at idle). Dealer says there is a service bulletin that says its 'normal'. Another thing you can check is what amps the fuel pump draws, especially since you said it got worse after running for a while. 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. Your car needs a vacuum to run properly. it only does it on a cold start with the hesitation on a warm start or cold start from idle in park or neutral you can throttle it up and when u release the throttle it will go down to about 400 RPM and sit there for a couple of seconds spittin and sputtering then jump up to about 800 RPM and smooth out. I had a 2017 Silverado with a 6. This truck balances a comfortable ride with solid handling for great overall performance. " Learn about which ones might be affecting your Silverado 1500. This is a discussion on 2008 Silverado acceleration hesitation within the GM Trucks forums, part of the Vehicle Specific category; Ever since new my 2008 5. The Chevrolet Silverado is a full-size pickup truck. Make sure it is clean. It needs more power than driving at a constant speed when pulling away from a stop. One thing that can cause this problem is a defective coolant temp sensor for the computer. Restoring a Holiday Rambler 1988 coach with 454 V8 in P30 chassis. Your car's engine needs both fuel and air to do its work. it has a slight hesitation on acceleration that I traced to a bad vaf sensor I have a analog scope and I can see slight opens in the trace, I am certain this is the problem, but I was wondering when you spray carb cleaner on the fuel injector o-rings and your oxygen sensor immediately goes rich and the tachometer jumps about 5 to 10. Helpful Information. A easy fix to this problem is to replace your spark plugs. remove both carpeted panels on the sides of the center console, ECU held in by 3 screws, unplug from left side. Repair Information for P0300 Chevrolet code. Chevrolet Silverado 1500 Engine hesitates during acceleration Inspection at your home or office. manual trans 22re engine. Car problem(s) with the 2014 CHEVROLET SILVERADO. Hesitation under Hard Acceleration So I ordered my EFI live, EGR Blocker, and Edge Insight and got it all installed last week. Lately at the shop we’ve seen quite a few newer Chevrolet Equinox’s having some cold start up noise, which is usually accompanied by a hesitation upon acceleration. 0 L V8 Engines (VINS V, T, U -RPOs LR4, LM7, LQ4) Condition: Some customers may comment on the following condition: * A lean hesitation, sag or stumble present during light to moderate. Its like its looking for the next gear but not sure that it really wants to get there. manual trans 22re engine. 99 Silverado - Stumbling Stalling Hesitation Diagnosed. Guys i need help i know this is an old posy but my vr4 when am on freeway at hight rpm it feels like it boostes then it cuts like an on and off swotch while driving like a flunctuaring rpm idk if i make sence. 2 engine and 8 speed transmission from a dealer in central Florida. Read more General Motors reviews to learn about other models. It would also be worth checking the crank angle sensor connection which is located (as you are in front of the car) at the "2 o-clock" position on the front of the engine behind the fan. A easy fix to this problem is to replace your spark plugs. 5 turbo and having a fuel problem i think. It’s the best coverage of any full-size pickup. its not throwing any codes and the idle sounds a little off. the ECU is located behind the radio. Unfortunately, this is how I. the darn thing will start to miss or sputter during accelleration and some times it won't do it for a little while after driving for a period. Another possibility is that the control that prevents the secondary barrels of a 4-barrel carburetor from opening at too low an rpm is needs adjusting. 3 Litre hesitates when accelerating at serveral different speeds, mostly noticable at lower speeds. Hesitation on Acceleration A mechanic drove it today and said there is a half to full second hesitation when you accelerate from stopped position. I guess it is thinking about. So I finally had to get back home. I have an '02 Silverado with factory radio/cd player. The GMC Sierra is a full-size, heavy-duty pickup truck. Engine Problem on the 2014 CHEVROLET SILVERADO. Our Product is a True Remote Mount version that allows mounting AWAY from HOT engine. A car that seems to hesitate or stumble during acceleration may have a faulty throttle position sensor. ok i have an 04 tahoe w/ 135k miles on it. possibly cat converter. I've had it for 2 weeks and I've just noticed this in the last week or so. I'll be going 30mph and step on the gas and it kinda hesitates, it will rev real quick then actually accelerate. Under light load and very slow acceleration, the engine runs fine. The dead spot from a stop still exists. 0 L 300 hp Gas - 2003 Does your acceleration inexplicably hesitate or suffer from loss of power?. When attempting to go from zero at a red light. If the Check Engine Light comes on, you may find any of the following codes: P0171, P0174 Lean fuel condition codes; P0120 to P0124 Throttle position sensor codes. gm voicemail log. we just bought a 2014 from the dealership with only 44k miles on it and noticed that it seems to hesitate while accelerating but after moving the problem goes away. I use everyday to for work. Sometimes when accelerating the transmission downshifts and hangs in that gear until you let off the accelerator. Chevrolet Silverado 1500 - Miss fire, hesitation, falls flat when accelerating also throws a 453 code- question about Cars & Trucks. Free Same Day Store Pickup. The 2020 Chevrolet Silverado has a solid lineup of powerful engines, including a V8 with best-in-class towing capacity and a turbodiesel that gives this Chevy best-in-class fuel economy. Engine hesitation, almost by definition, usually goes back to a misfire in one or more of the cylinders. I've had it for 2 weeks and I've just noticed this in the last week or so. 20, or 30mph. My truck does the same thing at this turn leaving work but if I have it in M5 it is smooth as silk. Hesitation on acceleration and hard. But it's very evident there's a hesitation. To learn more, see reviews below or submit your. 1999 silverado, 4. Posted to GM Driveability on 1/28/2013 18 Replies. Chevrolet Silverado 1500 HD Engine hesitates during acceleration Inspection at your home or office. Both the Silverado and Sierra eAssist trucks start life as two-wheel-drive 1500 models equipped with the mid-range 5. No codes were set (other than 12). When one or more cylinders stops firing, the power cuts, and the vehicle hesitates under acceleration. Less than 49K original miles. Hesitation when accelerating Still in the original tank of diesel, and have 447 miles on the truck. hesitation, the available Z71 Off-Road Package offers SkID pLATES, jounce bumpers and an AuTOmATIC LOCkING REAR DIffERENTIAL. Rough idle, bad hesitation on acceleration, perfect idle with TPS disconnected (1994 Toyota Previa) Very rough idle with a repetitive cycle that is smooth for a couple of seconds then misses badly, occasionally stalling. There is NO white smoke coming out the back. Hesitation is when your engine misfires, stumbles or lacks power when you accelerate or step on the throttle. No engine lights are lit. The TBI and engine are stock. $150 bucks to fix, and improvement in acceleration was immediate. Somebody told me this happens because the designers thought if you were accelerating, you probably need all of the power of the engine, so the A/C compressor stops running to allow the engine power to be full-bore. Lean Hesitation, Sag or Stumble on light/moderate Acceleration Models: 1999 Chevrolet and GMC C/K Pickup Models (Silverado, Sierra) with 4. Read more General Motors reviews to learn about other models. When you look at the timing, the advance is working but it is controlled by the esc. The problem is sporadic and not consistent, yet it seems to get worse in wet weather. The TBI and engine are stock. loss of power, hesitates on acceleration on 4. When the car gets warm or just in general I start taking off and it takes off slowly and around 3000 rpms you hear the engine sounding like its gaining ground and thats when it starts picking up speed. Chevrolet Silverado 2007-2013: How to Find Vacuum Leak. If it is running too cool, that would explain why it runs better in cold weather. Re: Throttle Mashing hesitation? The truck idles strong, even maybe a 100 rpms or so higher then normal (when in neutral) but the idle settles down as the truck warms up. The maximum. Free Same Day Store Pickup. Some customers may comment on a sag or hesitation when accelerating under the following conditions: When coasting at low speeds of less than 15 miles per hour with a closed throttle and then aggressively applying the throttle. Find CHEVROLET SILVERADO 1500 Spectre Performance Air Intake Systems 9918 and get Free Shipping on Orders Over $99 at Summit Racing! Spectre Performance air intake systems provide better acceleration and fuel economy for your truck or SUV. I've had it for 2 weeks and I've just noticed this in the last week or so. I've been messing around with the tunes and noticed under hard acceleration it seems to hit a point where it kinda falls flat on its face. 3 Silverado has had a hesitation on full throttle. There are a few different causes between gas and diesel engines. If I floor it, it either is working or it's masking it well. The truck has 225,000 miles on it, about 100,000 on the motor.