Went to start it Thursday, put the key in the ignition and engaged starter.....engine did not start but starter stayed engaged and going....even after turning off the ignition and taking keys out. Starter kept going until it died.
Put on a new starter. When I went to hook up the battery the second I put on the second battery connector the starter engaged. No keys in the ignition.
So there must be a short somewhere......or could it be the solenoid?
How long did that last? Same thing just happened on my son's truck. Replaced the relay, next morning the starter seized. Replaced the starter, 12 hours later the battery has to be disconnected to stop it from spinning. Replace the relay again, 3rd start and it's doing it again.