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Audi shudders when accelerating?
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Audi shudders when accelerating?
CVT Driveline shudder when accelerating form a low speed roll. A worn-out brake system might cause your car to shudder when you take your foot off the accelerator. Engine runs fine at idle after a cold start (e in the morning when I go to work) but when I put the transmission in D and press the gas pedal to accelerate the engine begins to shake rather violently like it runs in only 2-3 cylinders. May 1, 2012 · 4. The three German carmakers are doubling down on China to fuel their electric vehicle ambitions. 0 TDI DSG (69K), the car vibrates badly when accelerating at 55,60 mph +, but when i let go off the accelerator, the car is fine, no vibration! The car is at a VW/Audi specialist, i know the guy well, looked after my. Learn how to tell here. A normal gentle start at around 1200-1700rpm will produce the shudder. The harder the acceleration the more vibration. It only does it while turning at very slow speeds, in either direction. runs fine on roads and highways. Subaru or Idemitsu HP You will need up to 10 qts. It shudders from the driveline/I think) under hard acceleration. That fixes most of the vehicle, the others will need a convertor. 7TDI Quattro TipTronic Shudder when accelerating - Hi, I have a problem with my car, it´s a 2006 Audi A6 2. Nov 3, 2009 · When the car is moving and engine is running between 1500rpm to 2000rpm the car begins to shudder (jerk) as soon as I begin to accelerate. Q5/SQ5 MKII Discussion Discussion forum for the Second Generation Audi Q5 SUV Shuddering/Shaking when coming to a stop ANNOYING Thread Tools Search this Thread 06-07-2023, 10:54 AM. its only happen while acceleration. 2006 6mt ~130K When accelerating, the car shakes from about 50-70mph Shudder may be an indication of a torque converter going bad. I have recently noticed that I have an engine or drivetrain vibration when I lightly accelerate while at highway speeds. Known for their luxury, performance, and reliability, Audi pre-owned vehicles can be an e. It always seems to happen when I have been driving for awhile at higher speeds and then stop, and then accelerate again, for. Generally its happened when I'm accelerating up a hill. I had the differential housing and the intermediate gear housing off, replaced a few seals in there, along with the tailshaft seal, and put it all together again. The second earthquake struck on land in the region at 22:58 ( UTC) on 2 April 2010 at 5. The most common reason why a car is shaking or vibrating when accelerating is due to unbalanced wheels or a worn CV joint. You will feel most of the vibration from a loose tire at the steering wheel. The harder the acceleration the more vibration. A misfire is the most common reason your Audi Q5 isn't accelerating. A failing power steering pump. The jerking to a stop was the DSG needing service, got it serviced and the car drove immensely better. Try to keep transmission serviced around every 30k will help this concern. To diagnose the issue, you should get your car scanned with an OBD2 scanner, which will help you identify the specific problem causing the check engine light to come on. J. It does not happen when accelerating hard in a straight line from a dead stop, which leads me to believe it is something with the drivetrain/rear differential/AWD system. 0 TDI AWD has very loud shuddering sound coming from drive train (in all gears)mostly when accelerating, - Audi Cars & Trucks question that's when it shudders, but on accelerating this will not happen cos the centripetal clutch has enough torque such that the clutch is pressed hard to the cam & therefore no shuddering Transmission Shudder0T. The car was fine on test drive and all yesterday. Subaru or Idemitsu HP You will need up to 10 qts. During acceleration, the motor mounts the engine vibrates naturally as RPM’s increase. Flush your transmission fluid and add an additive to help shudder (shudder fix, etc). Also when downshifting through the gearbox there is no judder at all. Twice in the last week, the car will shake/shudder violently and jump when I accelerate. Are you dreaming of driving a luxurious and customized Audi that perfectly suits your preferences? With the “Audi USA Build Your Own” feature, you can turn that dream into a realit. And even weirder, the vibrations only occur after it's been driven for around 15mins or more. I have a 2016 Focus Titanium Hatchback with 32k. As a result, the fuel flow to your engine becomes restricted, causing your car to jerk when accelerating, especially at constant speeds. It does not happen when accelerating hard in a straight line from a dead stop, which leads me to believe it is something with the drivetrain/rear differential/AWD system. The problem likely lies in the clutch assembly and unfortunately is a simple matter of. Advertisement It's not impossible to avoi. The shuddering has to do with the clutch in the transmission since it’s basically a manual transmission designed to be an automatic. This condition may be caused by debris in the upper and/or lower valve bodies or valve scratched or scored. It rumbles for 1-2 sec. I took it to the dealer and payed $120. Unbalance tires : Even the tiniest weight imbalance can cause a vibration when the tire rotates—the greater your speed, the stronger the vibration. 1 Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. CNecessary99 Check your tie rod ends and run a can of seafoam through your gas. Reasons why your car jerks while accelerating can include: Spark plugs. Flush your transmission fluid and add an additive to help shudder (shudder fix, etc). It only does it while turning at very slow speeds, in either direction. I noticed the speedometer of engine speed pointer continously jumped a little (3 degree to up and down) when i use cruise control. Inside wheel is turning slower then outside wheel, you have two differentials compensating for the difference in wheel speed Try searching for differential shudder or vibration. Call or visit our used car dealership for more details. A one-year MBA may require full-time student status, with an accelerated degree options. Check all of your lines and replace if necessary. A vehicle's ignition system consists of spark plugs, coil packs, and maybe plug wires. I had this exact symptom in my 335i (engine shudder when quicly accelerating in 5th or 6th gear while cruising on the interstate). There might be an obvious bulge or defect in one of the tires and it could be. All is fine until engine loading increases slightly when in the 1500 to 2100 rpm range (usually hits about 1500 or so, and again at 2000, all gears). Jul 29, 2020 · Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. 0tdi 2013) did shudder like a lot not at idle much but when accelerating on low rpm, about 1200-1700rpm. Loose lug nuts: If the lug nuts are not correctly torqued on the hub of one or more wheels, your car will likely shake when accelerating. So, make sure to: Check brake pads for wear and potential replacement. Flush your transmission fluid and add an additive to help shudder (shudder fix, etc). Flush your transmission fluid and add an additive to help shudder (shudder fix, etc). Jan 30, 2012 · Jan 30, 2012 Hi all, I have done lots of searches and read lots of advice from you guys, basically i just bought a 2005 2. Hi - I have an 2002 Audi A4 1 When I accelerate, the car shudders when it - Audi 2002 A4 question. A worn-out brake system might cause your car to shudder when you take your foot off the accelerator. It feels as though I'm sat on one of those weight loss vibration machines!!! Acceleration - Delays, Shudder, Etc. Axles/CV replaced at 67k. Started around 19k miles (now have almost 22k). New 2024 Audi Q5, from McKenna Audi, proudly serving LA. Does not vibrate when coasting or not accelerating. Jul 29, 2020 · Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. Other causes of a car shuddering when accelerating include worn spark plugs, a dirty or clogged fuel filter, a weak battery, or even a faulty oxygen sensor. Reasons why your car jerks while accelerating can include: Spark plugs. 7 posts · Joined 2017 Looking for some advice on a current issue I am having with a 2010 Audi A5 2 When accelerating the car judders quite badly regardless of which gear I am in. If it is an older model, it’ll have a distributor and coil instead of coil packs. (RTTNews) - Estonia's consumer. This could be due to a clogged fuel filter, a malfunctioning fuel pump, or a dirty fuel injector. By DonGS300 March 23, 2016 in 06 - 12 Lexus GS300. Top #3941754 - 04/30/18 01:35 PM Re:. When pulling away from a stoplight at normal acceleration the revs sometimes drop and need to push the gas pedal a bit deeper to keep going. Car audio has come a long way from the old push-button radios with an analog dial. 7 and 10 speed transmission. 1 Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. The harder the acceleration the more vibration. kindergarten bible curriculum free I noticed the speedometer of engine speed pointer continously jumped a little (3 degree to up and down) when i use cruise control. car started to loose power. The shudder could be from the TC and replacing it could be the solution, IF your car is doing what is outlined in the TSB. A4 (B8 Platform) Discussion - rough, erratic idle and intense shudder - Since late summer I've been having a disturbing issue on my '10 A4 P+. A misfiring engine is one of the most common reasons your A3 will shake when accelerating. Brake shudder can be caused by a number of things including damaged rotors, malfunctioning calipers, or new brake pads that have not been properly broken in after replacement. Sometimes, when accelerating from a stop, at a very moderate clip, the car will shudder. The engine is mounted on rubber pads, which wear out and need to be replaced eventually. The Audi has enough power but the transmission doesn't feel smooth at all. A misfiring engine is one of the most common reasons your TT will shake when accelerating. An Audi recall warns of a loss of power from a simple spill in the back seat. A misfire is the most common reason your Audi A4 jerks while accelerating. TikTok has announced that they are now acc. Also happens a bit when accelerating slowly form a standstill. When accelerating even slightly when the engine is under load I get a shudder with the frequency of being on a rumble strip at about 30 MPH. 6 posts · Joined 2007 My Audi started to vibrate/shudder whenever I press the accelerator pedal. Audi Forums A4 Series. Shudder during acceleration. My car started having vibration issues under acceleration today. the fappening blog During acceleration, the motor mounts the engine vibrates naturally as RPM’s increase. Engine runs fine at idle after a cold start (e in the morning when I go to work) but when I put the transmission in D and press the gas pedal to accelerate the engine begins to shake rather violently like it runs in only 2-3 cylinders. May 1, 2012 · 4. It is quite scary cause when trying to overtake cars on the motorway my car just doesn't have the power to. A vehicle's ignition system consists of spark plugs, coil packs, and maybe plug wires. I've got a Golf 5 2. It happens again shifting from 1st to second gear and sometimes from 2nd to 3rd. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. Walter's Audi Home; I have a 2009 P+ 6MT sport with 39M miles. The air mixes with fuel to create a spray that powers your engine. There's a U joint underneath your vehicle that you can actually examine if you get under there to take a look. A misfire is the most common reason your Audi Q5 isn't accelerating. Transmission shudder is usually caused by a lack of transmission fluid or a slipping torque converter clutch. Audi CEO Rupert Stadler was arrested in Germany as part of the dieselgate probe that had engulfed the country's biggest automakers. It is quite scary cause when trying to overtake cars on the motorway my car just doesn't have the power to. On Tuesday, @greentheonly discovered and shared a Tesla service bulletin for the so-called 'acceleration shudder' on Tesla's Model X and S units. solveig gold Update: Some offers mentioned below are no longer avai. Here are some common misfire causes. VW Golf Mk5 TDI - Strange judder / shudder accelerating in 6th gear. 0 TDi with the 6 speed manual gearbox. After that it's fine. One tech even said he could live with it. The Dealership has done the tsb, which called for a computer update and trans flush, it got better but never completely went away. Along with only having to pay one year of degree-related expenses. Otherwise, the car is great. When I am accelerating under load and around 1200-1800RPM the car shudder and shake violently. Indices Commodities Currencies Stocks Enterprise-focused Alchemist Accelerator is back with another one. Small Business Administration (SBA) Administrator. I have a Mini Cooper S 2021 with front wheel drive and find that sometimes when accelerating my car will sort of "lock up" and the whole car will shudder and have trouble accelerating as if we're driving over heaps of pot holes. When driving, if I get slow enough to where the car is moving 5-10mph in 1st gear and get on the gas (like when rush hour traffic slows to almost a crawl and then speeds up), there's a very noticable driveline shudder. It is quite scary cause when trying to overtake cars on the motorway my car just doesn't have the power to. This fix works if the shuddering transmission is caused by contaminants in your fluid. As a result, the fuel flow to your engine becomes restricted, causing your car to jerk when accelerating, especially at constant speeds.
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Average Mileage: 55,750. When I begin accelerating from stationary or from almost still the whole car vibrates quite heavily for about a second. I never experienced this personally but he's got 10+ years with multiple BMW dealers and a BMW racing team. It has nothing to do with ABS. All is fine until engine loading increases slightly when in the 1500 to 2100 rpm range (usually hits about 1500 or so, and again at 2000, all gears). Better Tomorrow Ventures is launching a fintech accelerator, this time under its own roof, called The Mint. Mar 17, 2021 · Issue: Some 2019-2023 Ranger (non-Tremor) vehicles may exhibit a shudder/vibration when accelerating. My car started having vibration issues under acceleration today. Dealership ruled out engine missing, S-Tronic clutches. Re: Vibration / judder on acceleration - esp in high gears when engine under load - 05-06-2010,09:31 PM9 tdi I would say it's an injector fault/wiring loom fault. Here are some common misfire causes. The shake seems to be able to be controlled with the throttle, doesn. its only happen while acceleration. Engine runs fine at idle after a cold start (e in the morning when I go to work) but when I put the transmission in D and press the gas pedal to accelerate the engine begins to shake rather violently like it runs in only 2-3 cylinders. May 1, 2012 · 4. I just got new summer tires put on about 500. Mar 17, 2021 · Issue: Some 2019-2023 Ranger (non-Tremor) vehicles may exhibit a shudder/vibration when accelerating. Issue: Some 2019-2023 Ranger (non-Tremor) vehicles may exhibit a shudder/vibration when accelerating. 0 tdi with 110k miles it shakes when accelerating on throttle, for example 60mph in 6th gear and put your foot in gradually the shake goes though the car and can see the gear stick shaking. Oct 10, 2009 · A4 (B5 Platform) Discussion - Audi A4 stumbles and shakes on acceleration. If your car is juddering when you accelerate, then there's likely an issue during the combustion process. I never experienced this personally but he's got 10+ years with multiple BMW dealers and a BMW racing team. 2001 Towncar Shudders while accelerating. Here is a more detailed list of the most common reasons why a car shakes. There's a U joint underneath your vehicle that you can actually examine if you get under there to take a look. windsor star obituary today New 2024 Audi Q5, from McKenna Audi, proudly serving LA. If I keep my foot down while it is juddering the Emissions Control System light flashes for about 10 seconds. repeated and rhythmic. Shudder seems to feel like it is a lateral shudder 25 -30 mph vibration when accelerating update. 00 spec oil except non-DPF R5/V10 engines that must use 5050 1 93 Pajero GLS 3. 0T, Quattro) | 160,xxx Miles Gone But Not Forgotten: | Audi A6 (C5) Avant, 2004 (3. It has developed this slight shudder when driving – but only when I accelerate – between 50-80 kph. 0 TDi with the 6 speed manual gearbox. These are the most common causes of this kind of problem, but far from every possible reason. Year E-mail. This was all on my 2015 with 105k miles though, my new 2017 A3 drives like it’s literally brand new at 60k miles Jul 29, 2020 · Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. Click For Fuelly MPG Info. Jan 12, 2017 · J. 05-12-2001 07:30 AM A4 (B8 Platform) Discussion - vibration when accelerating - I have a 2009 P+ 6MT sport with 39M miles. with the cold weather this month I notice a problem with my 2010 VW TDI. In the morning, when the car is between 30 and 40 mph it shakes violently. Directions Riverside, CA 92504. Also happens a bit when accelerating slowly form a standstill. New 2024 Audi Q5, from McKenna Audi, proudly serving LA. with the cold weather this month I notice a problem with my 2010 VW TDI. I never experienced this personally but he's got 10+ years with multiple BMW dealers and a BMW racing team. Dealership ruled out engine missing, S-Tronic clutches. It always between 30-40ish MPH, and clear up very quickly once I'm outside of the speed range. 7TDI Quattro with TipTronic gearbox. 0 TDi with the 6 speed manual gearbox. A misfiring engine is one of the most common reasons your Acadia will shake when accelerating. craigslist mattress for sale Lately when accelerating on the highway, the car shakes quite alot. Thread starter Japy; Start date Jan 3, 2014; J Joined Dec 17, 2013 Location Michigan TDI 2005 Jetta GSL TDI Jan 3, 2014. In order to move forward have to step deep on the gas medal and have to drive at rather high velocity in order to move forward making it. Audi Q7 3. If I increase speed slowly, I can get up to 3k RPMs with no issues. A vehicle's ignition system consists of spark plugs, coil packs, and maybe plug wires. It's a non-issue for me now. However I doubt cold weather would cause my problem. 7 posts · Joined 2017 Looking for some advice on a current issue I am having with a 2010 Audi A5 2 When accelerating the car judders quite badly regardless of which gear I am in. So here is the symptom that started about two months ago in case any of you have it: Slight to moderate vibration/shake during acceleration from a stop or during traffic crawl, up to about 15-20 mph. It goes away when I accelerate to a higher speed. Fortunately, fixing a transmission shudder is as simple as replacing the contaminated fluid with a fresh one. Here is a more detailed list of the most common reasons why a car shakes. Jun 16, 2015 · Audi 90 / 80 / Coupe quattro / Cabriolet 08-07-2002 08:52 AM. I had to stop the car a couple of times, at first I thought I got a flat. box cars trains The Dealership has done the tsb, which called for a computer update and trans flush, it got better but never completely went away. This is frequently the cause of friction elements slipping and gripping again. 0L, Quattro) | 221,386 Miles [April 2014 - March 2022] New genuine Audi/VW parts for cheap within the US - audiusaoemparts. I bought it last November. Update: Some offers mentioned below are no longer avai. Clean the coil posts and apply dielectric grease to the connectors on both ends of the wires. 0L, Quattro) | 221,386 Miles [April 2014 - March 2022] New genuine Audi/VW parts for cheap within the US - audiusaoemparts. Nov 3, 2009 · When the car is moving and engine is running between 1500rpm to 2000rpm the car begins to shudder (jerk) as soon as I begin to accelerate. The Audi has enough power but the transmission doesn't feel smooth at all. I started to notice this shudder when I accelerate a bit hard and step off the gas pedal at 3000 RPM. 2003 A4 18t cabriolet. This fix works if the shuddering transmission is caused by contaminants in your fluid. Flush your transmission fluid and add an additive to help shudder (shudder fix, etc). A vehicle's ignition system consists of spark plugs, coil packs, and maybe plug wires. Audi A5 3. If any of the components in your fuel system stop working correctly, like your fuel injectors, fuel pump, or fuel pressure regulator, then your engine won't get the proper amount of fuel it needs for combustion. A misfiring engine is one of the most common reasons your Acadia will shake when accelerating.
Fortunately, fixing a transmission shudder is as simple as replacing the contaminated fluid with a fresh one. Better Tomorrow Ventures’ Sheel Mohnot landed some of his biggest wins b. Dealership ruled out engine missing, S-Tronic clutches. My Audi A4 acts like it is lugging and shakes a bit when accelerating hard. It needed a new Pressure relief valve. A vehicle's ignition system consists of spark plugs, coil packs, and maybe plug wires. My car has 84000 miles. one way trailer rental home depot Tis’ the season for bonuses in China when companies and other organizations give out year-end gifts or cash ahead of the Lunar New Year. May 13, 2009 · May 13, 2009 Hello all. All you have to do is feel the shudder. The recommended engine oil for a 2010 Audi A4 2. While Green and a number of users commented on - On Tuesday, @greentheonly discovered and shared a Tesla service. Spark Plugs - Even under the best conditions, spark plugs will eventually need to be replaced. If I accelerate through the shake it smooths out. Audi on demand is Audi's in-house rental car company. kobeni rule 34 When accelerating from a stop and up through the gears is fine. Here's how to check your offer. Tis’ the season for bonuses in China when c. engine on or around 1200 revs after start up first thing, also it would judder a little when setting off in first. (Nasdaq: AZTA) today announced that it has entered into an accelerated share repurch, Nov (RTTNews) - Estonia's consumer price inflation accelerated for a third month in a row in April, driven mainly by higher utility costs, data from S. It comes and goes at random and occurs only during hard acceleration (eg: when the turbo is boosting) We have had it at the agent. Along with the TC, change out the screen and fluid. All New Inventory Featured New Inventory New Audi Specials Research the used 2022 Audi Q5 for sale in Riverside, CA, near Los Angeles. craigslist oahu cars Worn-out spark plugs Fuel pump malfunction. 2006 6mt ~130K When accelerating, the car shakes from about 50-70mph Shudder may be an indication of a torque converter going bad. Vibration when turning. Generally its happened when I'm accelerating up a hill. Jump to Latest Follow. A4 (B8 Platform) Discussion - rough, erratic idle and intense shudder - Since late summer I've been having a disturbing issue on my '10 A4 P+.
Hello all, This Audi I've got here loves to shudder and vibrate for some reason5 A4 with the tiptronic transmission, and have this small but annoying issue. He originally thought it may be the tires. I'm getting a noticeable shudder when accelerating from about 30-50 mph. Acceleration from a stop causes car to shudder and shake violently (with loud hammering sound) during low speeds for a maximum of 3 seconds, then everything is fine until the car stops and accelerates again. I thought it might have been my right front ½ axle so I replaced it. Shudder when accelerating. Try to keep transmission serviced around every 30k will help this concern. "A tax window of 3-5 years will allow us to explore localisation. (RTTNews) - Estonia's consumer. The way I fixed it was by adjusting the suspension from level 1 to level 2. 0 V6 LWB - SOLD 2001 Gen3 Di-D LWB - SOLD 2005 Touareg 2. 2 Another possible cause of a flashing check engine light is a vacuum leak. One tech even said he could live with it. If the fuel injector is faulty or clogged, it can cause the engine to shudder as it is not receiving the correct amount of fuel. The Maule Region (Spanish: Región del Maule, pronounced) is one of Chile's 16 first order administrative divisions. Put the left foot hard on the brake and with the gear shifted to drive mode, accelerate the gas pedal with your right foot. Often, a dirty fuel filter, fouled up fuel injectors, and the use of low-quality fuel are. Average failure mileage is 93,250 miles. Jan 14, 2017 · 2019 Audi Q5 with 40k miles Just purchased at the beginning of May. If it is an older model, it'll have a distributor and coil instead of coil packs. Q: Car shudders when accelerating and going uphill, seems like a loss of power, particularly around 1500 rpms. sherwin williams chalk paint color chart The shudder would go away with enough trottle to downshift, or letting off throttle. My B9 is a 6 speed manual and what I have noticed is that when I accelerate from cruising. The car has been fantastic except for one intermittent issue. I noticed the speedometer of engine speed pointer continously jumped a little (3 degree to up and down) when i use cruise control. Howsit. Nov 12, 2012 Right my problem is that my VZ shudders when accelerating above 100km/hr it will accelerate steadily up to 100k but as soon as I put my foot down at 100k it just starts shuddering like made and very slowly if at all increases in speed, I tried it in other gears and does the same in 4th about the same rev range 2000-2300. I have a 2012 traverse. The harder the acceleration the more vibration. If that happens, one or more of your wheels will have brakes that are being constantly applied, which can cause. Problem #1: Dirty Hubs. Jump to Latest Follow 3K views 15 replies 8 participants last post by scar_cle Aug 1, 2018. If that happens, one or more of your wheels will have brakes that are being constantly applied, which can cause. And there is no CEL or codes from VCDS reading. A vehicle's ignition system consists of spark plugs, coil packs, and maybe plug wires. Are you dreaming of driving a luxurious and customized Audi that perfectly suits your preferences? With the “Audi USA Build Your Own” feature, you can turn that dream into a realit. Does not vibrate when coasting or not accelerating. I noticed the speedometer of engine speed pointer continously jumped a little (3 degree to up and down) when i use cruise control. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires. It is from the moment I accelerate at any speed until I get up to about 60mph at which it then still shudders but not as bad. Today marks its 27th Demo Day, with more than two dozen companies expected to take the (virtual) stage Amazon Web Services (AWS) has announced the 10 startups selected to participate in the 2022 AWS Space Accelerator. grannyshow com Have you ever hit a bump in the road and gone flying up in the air? Learn how vertical acceleration works in this article. Now you can move on to figuring out which part it is. 1 Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. Does not vibrate when coasting or not accelerating. 197 posts · Joined 2005 Spark plug wires; if you have more than 30k miles on the vehicle install a new set of OEM wires. August 22, 2022 by John. Better Tomorrow Ventures is launching a fintech accelerator, this time under its own roof, called The Mint. You feel this vibration only when the vehicle is accelerating. The problem goes away if the RPM. See full list on racuk Nocking sound when accelerating hard 2000 Audi 5 Answers. Discover how accelerators can help your startup grow better and learn how you can apply to accelerators around the globe Trusted by business builders worldwide, the HubSpot Blogs a. Worn-out spark plugs, or the electrical cables attached to them, are one of the most common causes of stuttering.