Thread: tune up
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Old 12-04-2012, 08:06 PM   #8
Scooby Specialist
Member#: 118500
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: Michigan
02 Silver Wagon
"Stage 2"


As cmiovino said, vacuum leaks would be my next thing to check. Usually an IAC is erratic idling, not rough idling. In my experience anyway. Strange things happen when stuff goes bad.

A vacuum leak can cause poor air/fuel mixture which causes poor idle stability.
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