1990 Toyota Celica Idle Funny Down By Self

1990 TOYOTA CELICA
300,000 MILES
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Why is my celica idle funny .? Idle goes up an down by its self
Nov 30, 2012 at 1:45 PM
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KHLOW2008
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Exessively high idling speed would cause that. Check for vacuum leakages (dislodged or cracked hoses) , clogged coolant hoses to the IAC, coolant level and idle adjuste screw.
Nov 30, 2012 at 2:09 PM
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