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Home >> Chevrolet >> 1990 >> Forward Control 5.7 K, Automatic, 475/M40 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - TBI >> Diagnostic Tests >> Code 35: Idle Speed Error (2.5L) >> Throttle Body

Throttle Body

Remove IAC and inspect bore for evidence of IAC valve dragging.

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