Check Engine Light Due to Gas Cap Issue on Oldsmobile 88

A Loose or worn gas cap may cause Check Engine Light to illuminate.

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Average mileage: (–)
4 model years affected: 1996, 1997, 1998, 1999
6 people reported this problem
1 person shared problem details
Failed at inspection just for lousy gas cap,better off to replace to avoid headache,only 10 bucks and you don't have to worry about it.I see motor vehicles failing cars left and right for a defective gas cap.Sometimes check engine light may or may not come on.That's what happened to me 2 weeks ago-NO CHECK ENGINE LIGHT,BUT DEFECTIVE GAS CAP
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