ENGINE SOUND KEEPS GOING UP AND DOWN

1994 Audi Quattro

Tiny

DZAM

February, 22, 2013 AT 7:53 AM

ENGINE SOUND KEEPS GOING UP AND DOWN

FOUND 1962 RELATED QUESTIONS

2 Answers

Tiny

exovcds

February, 23, 2013 AT 12:55 AM

Check for stored fault codes (if ECM equipped) and vacuum leaks.

What engine?

Thomas

Tiny

mhpautos

April, 24, 2013 AT 4:05 PM

Probably a faulty idle control system, check for codes and get IAC system checked out first.

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