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Home >> Geo >> 1990 >> Storm Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Chart C-2C Idle Air Control (IAC) (Storm) >> Diagnostic Aids >> Notes
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Diagnostic Aids: Notes

A slow, unstable or fast idle may be caused by a non-IAC system problem. An out-of-control range IAC "Scan" tool reading counts will be greater than 60 if idle is too low, and zero counts if idle is too high.