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Q: Check engine light is on.. Its not running any differently and it starts normally..

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Check engine light is on
My car has an automatic transmission.

A: You need to have the engine computer scanne...

You need to have the engine computer scanned to see what trouble code is stored. Not all codes will cause the engine to run bad or cause a noticeable problem. For instance, a trouble code could be triggered by a loose gas cap.

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