Question about 1997 Volkswagen Jetta

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I am hearing a constant thumping coming when the vehicle is moving forward. The frequency is proportionate to the speed of the vehicle.

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May sound silly but have you got a flat spot on your tyres (if its been parked up for a longish time...)also look for a bulge on the inner wall of the tyres.

Posted on Sep 15, 2010

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Posted on Jan 02, 2017

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Have a thumping noise, thought it was cv joint. Removed axels, they are good. Noise is there only when car is moving. Frequency inceases with speed. Wheel bearing roll smoothly.


Rhythmic thumping noise when car's moving - Car Talk

community.cartalk.com/.../rhythmic-thumping-noise-when-cars-moving
Jun 4, 2013 - Hello, I have started hearing faint thumping noise in my Murano, coming from the front most likely.

Sep 24, 2015 | Cars & Trucks

1 Answer

Hello. I hear a very loud thumping noise from the back of my 2014 Toyota Corolla as I slow down. I have taken it twice to the service station at the dealer and they hear the noise but cannot identify where...


Here are the only reason that can cause a thumping noise
  1. Wheel and Tire Problems
    • Wheels can become bent from striking objects, and tires can develop bulges from broken belts or wear. Both problems may cause a thumping noise. Thumping sounds caused by wheel and tire problems will typically increase in frequency at higher speeds, though the sound may not be heard at lower speeds. These problems can often be spotted by visual inspection.
    Suspension Problems
    • Worn or broken struts or strut mounts can create a thumping noise, especially when the vehicle hits a bump in the roadway. To test struts, bounce the rear of the car by forcefully pushing down on it and letting go. After letting go, the car should settle back to its original position without bouncing or noise.
    Loose Trim
    • Loose trim pieces near or in the wheel well can flutter in the wind while a car is being driven. These trim pieces may create a thumping noise as they strike other objects. A car owner can check trim pieces for looseness to determine if that is the source of the noise.
Hope this helps

Feb 20, 2014 | Cars & Trucks

2 Answers

Noise is coming from the middle dash area, you can hear it inside the cab but engine area seems fine, no noise, this is driving me nuts, it sounds like a loud flapping or banging


Does this happen constantly or only when you have the cabin a/c or heater fan blowing? Do you hear it when the vehicle is running but not moving? I suspect that something fell down into one of the windshield defroster vents and is rattling around inside the blower fan cage.

Oct 08, 2013 | 2007 Mitsubishi Raider LS

1 Answer

Thumping noise in the rear of the vehicle


put rear tire in front front on rear see if anything changes

Feb 25, 2012 | 1999 Ford Explorer

1 Answer

Where is the location of the speed sensor on the 1999 v10 triton f250? Why does my speedo not work?


VSS Sensor The Vehicle Speed (VSS) Sensor input is used by the PCM to determine vehicle speed. The VSS generates a signal that increases in frequency proportionate to vehicle speed. The PCM has a base frequency stored in memory for a distance of one mile. By comparing the input and stored value, the PCM calculates vehicle speed.
VSS types include: photo-optic, permanent magnet generators or hall effect technology. The PCM may use other sensors on the vehicle (ABS Wheel Speed) to validate VSS operation.
VSS information is used to calculate vehicle loads including: torque converter application, cruise control, fuel cutoff/speed governance strategies, instrument panel speedometer and more.
Modified drivetrain components such as final gear sets and/or tires can alter VSS input values to the PCM. Improper signals can alter Torque Converter Clutch (TCC) application, shift points, cruise control operation as well as many other systems relying on vehicle speed input.
Typical VSS comp-00-00-636.gif

WARNING
To avoid personal injury and/or vehicle damage, refer to the service precautions at the beginning of this section.

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The Speedometer may not work due to a break in the wire for the VSS, or a bad VSS or a bad instrument cluster.

Oct 08, 2010 | Ford F-250 Cars & Trucks

2 Answers

Thumping coming from front end all speeds.


IF IT ONLY THUMPS WHEN YOUR CAR IS MOVING YOU COULD BE WRITE. PAY ATTENTION TO THE THUMPING CLOSLEY, DO YOU FEEL A VIBRATION IN THE STEERING WHEEL, IF SO THE PROBLEM IS IN THE FRONT END. IF YOU FEEL A VIBRATION IN THE DRIVERS SEAT THE PROBLEM IS IH THE REAR END. YES THE VIBRATION FROM THE FRONT STEERING AND THE DRIVERS SEAT IS A WAY TO TELL WHERE THE PROBLEM IS

Aug 10, 2009 | 1994 Volkswagen Jetta

1 Answer

Thumping sound


If it's also a "wub wub" sound, look into your tires. I had a flat spot in my front driver's side tire that made the "wub wub" sound. Couldn't hear it well if driving slowly, but as I would pick up speed, the "wub wub" would increase in frequency and volume.

Jul 02, 2009 | 1999 Ford Taurus

2 Answers

Few days ago I start hearing a constant noise while driving , coming possibly from front right wheel. There is no noise when car is moving slowly , but past 30km/h noise is increasing proportionate to...


check your wheel bearings, brakes and backing plate, since you said the noise is proportionate to speed i'm pretty sure its your wheel bearing, does the noise change when you turn (get louder or softer?) if so, i'm 98% sure its the wheel bearing

Jun 20, 2009 | 2001 Jaguar S-Type

1 Answer

I have a 99 Mountaineer. Recently replaced the


If it is a continuous thump (ie thump, thump, thump) that changes in speed with the speed of the vehicle it is likely related to a tire problem.

If it happens when you hit a bump or immediately afterwards it is likely due to something loose or worn out in the suspension.

If it happens somewhat randomly and doesn't seem affected by bumps it may be a loose piece of trim, or something loose under the car getting knocked around by the winds.

Jun 13, 2009 | 2002 Mercury Mountaineer

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