1995 Chevy Corsica “check engine” light comes on

Dear Doctor: I have an intermittent problem on my 1995 Chevy Corsica with the 3.1-liter engine. I only have 62,000 miles on it and it is in great shape. On occasions when I start the car in the morning the “check engine” light comes on and about 30 seconds to one minute later it will go off. This problem does not occur every time. I have replaced the oxygen sensor about two years ago and the temperature sensor just recently. What should I do? Steve

Dear Steve: There should be a trouble fault code in memory even though the “check engine” light is not on. There are many possibilities for an engine light to illuminate, but without a scan tool it is impossible to locate the problem.

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