Thread: 1991 chevy 1500 5.7 tbi erratic idle
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Old 10-18-2008, 04:50 PM   #62
NEUMANNZZ
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Location: San Diego
Age: 43
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Re: 1991 chevy 1500 5.7 tbi erratic idle
The o2 sensor is grounded in the ecm if its a two wire.(tan wire)
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