Flashing Check Engine Light
I have a 1989 F150 4X4 5-spd with a 302 engine. Whenever I drive down the road, the "Check Engine" light starts flashing. It flashes continuous and does not flash a code. If I floor the accelerator, the light quits. While deccelerating, the light quits flashing. I ran codes and it runs clean. Any ideas what is causing this?