1994 Audi Quattro Engine Sound Keeps Down

1994 AUDI QUATTRO
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DZAM
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ENGINE SOUND KEEPS GOING UP AND DOWN
Feb 22, 2013 at 7:53 AM
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EXOVCDS
  • CAR REPAIR CONTRIBUTOR
  • 1,883 POSTS
Check for stored fault codes (if ECM equipped) and vacuum leaks.

What engine?

Thomas
Feb 23, 2013 at 12:55 AM
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MHPAUTOS
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Probably a faulty idle control system, check for codes and get IAC system checked out first.
Apr 24, 2013 at 4:05 PM
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