Q: Massive vibration after 40 mph or once I go from 4th to 5th gear.

asked by on

My 2004 VW Touareg 4.2L V8 runs well up to 40 mph (or 1st thru 3rd gear). Once my car gets above 40 mph (or goes into 4th gear) and only while accelerating, I get an extreme vibration. When I take my foot off the gas, the vibration will stop no matter how fast I'm going or what gear I'm in. I also here a clicking noise when backing up or driving very slow (5 mph). I ran a diagnostics, and my faults came back with a secondary air injection issue, and a #7 spark plug mis-fire. I replaced my auto-differential because the dealership said that was the problem, but the problem still exist. Please help.

My car has 139400 miles.
My car has an automatic transmission.

Hi Darryl. Thanks for contacting us today. Generally speaking, a single cylinder misfire will gradually create a steady vibration, but not stop when you’re accelerating. The type of vibration you’re describing is often caused by a transmission or engine mount, a damaged input or output shaft, wheel bearing or inner engine component. The fact that it stops when you decelerate would lead me to start with the throttle body, and looking for either a vacuum leak or damage to fuel system components. To be honest, without being there to test drive or attempt to replicate the symptom, it’s really hard to ’guess’ - so you might want to have another mechanic come to your location to help you diagnose this issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Massive vibration after 40 mph or once I go from 4th to 5th gear.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Copy a key 2004 Volkswagon Toureg

Hi there. There are two good VW dealerships in the Baltimore area I'm familiar with - (Heritage VW) one in Catonsville and one in Parkville that I'd recommend. I would first contact their service department to ensure they can provide...

Q: I have a 2007 Audi RS4; it usually refuses to start.

If you can hear the relay clicking, then you may have an issue with the starter. Starters often become tempermental before they fail altogether, so the trick is to diagnose it while it is in failure. If you can access...

Q: When raining, brakes grind first few stops and then clear up

The brake pads have metal in them, and the rotors are made of metal, and when it rains they get wet and surface rust will immediately start to rust the rotors. As soon as you start to drive off, the...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.