[Richard and Rhonda]

That would be the fuel shutoff solenoid. The solenoid may not be the culprit, also check the relay that powers the solenoid. Easiest thing to do is expose the pos and neg lead to the solenoid. Clamp on the voltmeter. see what happens to the voltage when you let go of the switch. If it drops to zero, it's the relay circuit and not the solenoid.