Service engine soon blinks going down a hill at 55 plus. Does not when going slower or when it is cold.

5

Asked by Nov 30, 2014 at 06:27 PM about the 1996 Buick Century

Question type: Maintenance & Repair

1 Answer

65,845

The blinking Service Engine Soon light is warning you that the engine is misfiring and damaging the catalytic converter!! The first course of action is a tune up. Replace the spark plugs and spark plug wires. If you've already done that test the coil packs. If one is failing replace all 3. HTH. -Jim

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