my service soon light keeps coming on, on my 83 cadillac coupe deville, anyone know what this may be?

Asked by Jan 29, 2012 at 11:33 PM about the 1983 Cadillac DeVille

Question type: Maintenance & Repair

when I am driving on the expressway, my service soon light comes on and goes off, but when I am just driving on residential streets it doesnt.

1 Answer

685

If it's coming on at high speeds it could be your oxygen sensor.

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