Started the engine for the first time this year (new engine) and it will not cut off. Key felt fine in both directions, it will not turn the engine off. It is a 1972 Skylark. Anyone have this? Any ideas on what it might be?
My msd did that but if i hit the breaks..i guess to pull voltage... It would shut off. The diode trick works best.
I don't know about MSD ignition failure modes. Do you have one of them on the car? One possibility is that the yellow wire ("R" terminal on the starter solenoid) that provides power to the ignition while cranking is in contact with the battery terminal on the starter. You will have constant power to the ignition if this is the case, but you would have a had a stone dead battery. Another possibility is that the ignition switch has failed. The contacts can sometimes come loose. How did you shut it off? Pull the coil wire? Check the coil for power with the key off. There should be no power with the key off.
