WHEN I PRESS THE BRAKE IN DRIVE OR REVERSE THE ...

  • Tiny
  • Anonymous
  • 2003 Volkswagen Passat
  • 140,000 miles

When I press the brake in drive or reverse the car starts to shake when I am on a stop light or on a red light but when I put it in neutral the car stops to shake what could be wrong it is an automatic transmission.

Friday, March 22nd, 2013 AT 4:35 AM

2 Replies

  • Tiny
  • exovcds
  • Member

Always scan for codes first (even when the "check engine light" is not on). Check "fuel trim" values with a scan tool (not every scan tool can retrieve them), they will tell you if the engine is running rich or lean.

Cleaning the throttle body and performing a throttle alignment / adaptation, can also solve idle issues.

Thomas

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Friday, March 22nd, 2013 AT 8:36 AM
  • Tiny
  • mhpautos
  • Expert
  • 30,591 posts

May also be a vacuum leak at the booster, how are the brakes and any noise when you hold the brake down?

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Sunday, March 24th, 2013 AT 12:31 PM

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