Question about 1991 Oldsmobile Cutlass Supreme

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Check engine lightis on whats this mean - 1991 Oldsmobile Cutlass Supreme

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The computer has sensed some problem with the engine or it's many control sensors. Things like the O2 sensor on the exhaust pipe wear out over time like spark plugs do. Go to Autozone or other parts supplier for a free read of the computer which delivers any fault codes--the codes are related to a chart that points out the problem area and in some cases, the actual part in trouble. Good luck!

Posted on Nov 17, 2009

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