Starter kicks in while truck is running.
#2
Just offhand, it sounds like something in the ignition switch giving a false signal to the relay.
Does the key fully return to the ON position after starting?
Do you have a remote start feature that may be getting flaky?
Long shot - May have a starter bendix problem where the spring has failed or has gotten weak, not keeping the starter drive fully retracted. Can you tell if the starter motor is energized versus just a gear-knashing sound?
Does the key fully return to the ON position after starting?
Do you have a remote start feature that may be getting flaky?
Long shot - May have a starter bendix problem where the spring has failed or has gotten weak, not keeping the starter drive fully retracted. Can you tell if the starter motor is energized versus just a gear-knashing sound?