Touareg :: Thumping / Knocking Noise When Letting Off Of The Accelerator To Stop
Oct 21, 2005
I have been hearing a muffled thud or knocking noise often, especially when letting off of the accellerator when coming to a stop...almost sounds like some kind of bracket might be broken and some part is slapping against another. No particular consistency in the pattern of the sound...very strange. I had the car in for service to replace the stepper motor and the tech indicated he thought changing it would take care of it...it didn't.
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2005 ford f250 6.0 Started making this noise from front about a month ago, can't figure out what it is. Only happens when letting off accelerator or changing from P - D. The truck acts normal, seems to be louder when the truck is warm.
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I brought my car to a dealership for its 120,000mi check-up, and they told me that the front axle boots were torn. They replaced the right axle, and on the ride home, I noticed a burning smell. Short story is four return trips, and the right axle replaced three times (including the initial replacement), and the smell has finally gone away. The weird part is not that I went back to the same place four times instead of giving up, it's that they told me this last time that they moved the replacement #2 right axle to the left when they installed replacement #3.
Why would they do that? Why would the smell go away if the issue was with that axle? I looked it up, and the same part is used on the driver's side and passenger side, so it wasn't as though they installed a left axle on the right the first two times. Does this mean the "new" axles were just new-to-me and had been reconditioned? If reconditioned, would it matter if a previously left axle was mounted on the right?
Meanwhile, about six weeks after replacement #2, the car started making a thumping noise when the accelerator was depressed at a speed over 35mph (but not when coasting above 35mph or with the gas on below 30-35). I was wondering if it was misfiring or something, but lo and behold! That noise went away with the axle switching. Way back at replacement #1, they replaced the boot on the left but not the entire axle until #3.
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I replaced my struts and shocks a few weeks ago and i installed lowering springs H&R. Yesterday i started hearing this knocking thumping noise coming from the right front of the car me and my uncle took the wheel off today and looked around and everything was nice and tight we proceed to both push down on the right corner of the car to have it bounce up and down and we heard the same knocking sound coming from the right front area it sounds almost as if the strut blew out in the front right would the symptoms i described concur with the front strut being blown out, and on a side note the struts are only a few weeks old is this even possible since the struts are so new? I do have 20" rims on the car with low profile tires could i have hit a pothole hard enough to cause the strut to blow out? Iam planning on taking a trip to the dealer tomorrow and have them check it out.
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Our 2010 Prius jerks at speed of 15-20 mph and or when letting off the accelerator. I changed the spark plugs & filter. Also, cleaned out EGR tube, throttle body and intake manifold. thinking these might be it. These did make minor improvements, but the issue remains. No codes.
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I have a 2010 prius with about 245k miles on it. I have recently noticed slight vibrations at speed of 15-20 mph and or when letting off the accelerator. I also noticed it goes away at higher speeds. I don't feel these vibrations when on battery or when coasting down a hill. I did an oil and filter change in March. I am planning on changing the spark plugs soon. What might cause a prius to jerk or vibrate?
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I get a strange noise when I shit gear & press the accelerator..... the sound is as if something is knocking.....
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I've got a pretty nasty driveline clunk when going over 40mph and letting off and reapplying the accelerator. The way I'd describe it is: when I let off, it feels like something clunks forward, and when I get back on it, it feels like it clunks backwards.
So far I've had the U-joints replaced, replaced the tranny mount, greased the slip-yolk several times, and just changed the rear diff oil (and found no broken teeth or excessive wear in the gears) and it still does it.
Since I don't have a sig:
2001 Ex 4x4 7.3L PSD
5" RC Lift (but the clunking was present before the lift)
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04 explorer, When traveling under throttle the thing runs smooth, when letting off accelerator, there's a rumble from, what seems like, the rear of the vehicle, when I press the accelerator, it almost "clunks" and acts fine once it's under acceleration again. Should I suspect my rear end gears going out, or something simple like a universal joint.
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My 05 Explorer has started making a like slightly jumping motion and thumping sound when I let off the gas. It seems to maybe happen when it wants to gear down but it I give it the slightest gas it quits. Do you check the ans fluid when it's hot or cold? I checked it hot and it ran out.
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So, I'm slowly but surely eliminating a terribly shaky front end on my 2002 F-250 7.3L 4x4. First was a new carrier joint on the front drive shaft. Didn't work much, but the shop said the darn thing was falling apart. Next thing I did was new wheel bearings and manual hubs. Less vibration for sure. But the last remaining issue, in terms of vibration, is that when I let go of the Accelerator going at any speed above 60 MPH, it makes a horrible horrible noise, and I could feel a vibration. It shakes the whole truck, but I can very noticeably feel it directly in the gas pedal. It's really only an issue during deceleration. What could it be??? Drive shaft U-joints? Torque Converter? Something else in the Front End? Something in the engine even?? I don't exactly have the funds to tackle every possible solution.
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Experienced a thumping noise when changing gear (automatic gearing). FOr eg. when i change from P to R or even D, there's a thumping noise which i think comes from either the gearbox or the diff. either way, sometimes the thumping noise is there and some other times, its gone.
I've only done around 1500 kms since new and if there's no solution, i'll just take it to the dealer and get it diagnosed.
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Jeep 2000 Cherokee
So I have this thumping noise, almost sounds like something is loose.The noise occurs for a few seconds when I accelerate from a dead stop and then goes away, it returns when I slow down and almost come to a complete stop.The noise also goes away when I put her into 4wd.The thump/rattle sounds like it is coming from the center counsel area and directly under the floor board in the driver seat.My car changes gears smoothly up and down while driving.
I was told it might be a transfer case problem and that it might need to be rebuilt, which makes me worry.
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My Egg's only a week old and every time i start and get going i get this rattle(and bit of noise) thru the accelerator pedal after a few seconds- just once only and never again until I completely stop and restart to move again.
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Almost every time I come to a stop i hear this knocking noise coming from behind the dash, what it is ?
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When I am driving under 40mph with my AC on there is a constant knocking noise behind the dash, actually sounds like someone is back there knocking constantly. Every once in a while it will start squeaking. Its loud enough to be heard even with the radio on. Kind of embarrassing when someone else is in the car. My dealer doesn't know what it is and its driving me nuts!
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I just bought an '02 Passat with 42k miles on it. I didn't notice it when I test drove it but now I'm hearing a knocking/thumping sound from the front end that goes to the speed of the wheels at slow speeds (10-30mph). I can also feel it pulse when I use the brakes at slow speeds. What this might be?
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When accelerating and/or braking, a thumping or knocking noise comes from the rear of the car. I do not believe it's my shocks, as there is no noise when going over bumps, only accelerating and stopping. What may be the cause? Control arms maybe?
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Our 2009 Santa Fe has a knocking sound coming from the undercarriage of the vehicle. It cannot be heard when parked or when coasting. If I gently depress the gas pedal enough to rev the engine to 1500-2000 rpm when traveling at speeds of 35mph or greater it can be heard. The rate of the knocking / thumping appears to be related to vehicle speed, i.e., the faster we move, the higher the knocking rate.
Yesterday I emptied the vehicle of all contents and was still able to produce the sound upon demand.
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I have two 2009 stick Focus SE 4drs (one for me and one for the Mrs.) Both are PZEV. Mine, with 66k runs great; hers, with 43k talks back when under initial load. When starting up from a stop or up shifting in any gear we get a snorting or knock in the 1000 -1500 rpm range. Once above 1500 rpm all is quiet. The funny thing is that if it is raining out, the noise does not occur. The car is also an absolute dog on any hill, putting the pedal to the floor does absolutely nothing (no knock, either) Having an identical car myself, and not experiencing these two things, I would guess that something is amiss. What might be the cause?
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2005 V8 TREG 74,000 miles ... Just last week.... My T-reg started to hear this knocking noise which seems to come from the engine on the driver side... I would say lifter sound but hoping that's not the issue. I do notice that when i start the car, no noise but when driven on the highway... I hear it especially when i come off the highway. On regular street drives, it takes a while for the noise to come up. I've had the Treg for about a year now and havent had any problems but this. I drive the car during the weekends and sometimes during the week.
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