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Home >> Cadillac >> 1993 >> Eldorado Base, 4.9 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm >> Pcm Code Charts >> Pcm Code P027 - Open Throttle Switch Signal >> Failure Conditions

Failure Conditions

PCM retracts ISC motor and sees a corresponding decrease in throttle angle twice.

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