ENGINE SOUND KEEPS GOING UP AND DOWN

Tiny
DZAM
  • MEMBER
  • 1994 AUDI QUATTRO
ENGINE SOUND KEEPS GOING UP AND DOWN
Friday, February 22nd, 2013 AT 7:53 AM

2 Replies

Tiny
EXOVCDS
  • MECHANIC
  • 1,883 POSTS
Check for stored fault codes (if ECM equipped) and vacuum leaks.

What engine?

Thomas
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Saturday, February 23rd, 2013 AT 12:55 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Probably a faulty idle control system, check for codes and get IAC system checked out first.
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Wednesday, April 24th, 2013 AT 4:05 PM

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