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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Tests W/Codes - TBI >> Diagnostic Tests >> Code 35: Idle Speed Error (2.5L) >> IAC Valve Reset Procedure

IAC Valve Reset Procedure

Turn ignition off for 10 seconds. Start and run engine for 5 seconds. Turn ignition off another 10 seconds.

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