Awasome Flashing Check Engine Light Chevy Impala Ideas. When my mechanic checked the codes he had an o2 sensor replaced and the crank shaft sensor. This blinking light frequently indicates a severe engine misfire allowing unburned fuel to be dumped into the exhaust system.
Web if it is flashing, it indicates a severe misfire and the engine should be shut off. Has anyone had this problem before? Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the service.
