[Richard S]

Starts right up. Everything is normal until it reaches operating temp, then starts to cut out. Thinking I may have an ignition coil breaking down when engine reaches operating temp. Not sure, coil checks out good when engine is cold. Could ignition module do that or do they usually just die. If so is there a way to test module. Never does stall to where it dies. Idles smooth all the time. It's only under load.