Famous 2003 Mustang Check Engine Light Flashing Ideas. A few seconds after i slowed down the flashing light went off and now whenever i hit that speed the light flashes again and. Web curisin in 4th, lights started flashing.car went into limp mode.i pushed the clutch in, cut the car off, and restarted it.car ran fine, then about 2 miles after it happened the check engine light come on and stayed on.car ran fine.i checked the code, and it pulled a cylinder 3 and 5 misfire.i pulled the plugs, look fine.
When the check engine light is flashing in mustang, it indicates that there is a significant problem with the engine that requires immediate attention. I know a blinking check engine light means a misfire, but i don't think this is the case. 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.
