my cousins truck(94 in sig) is haveing a fuel shut off problem it seems to be working ok right now but there are times that it just wont shut off the solenoid moves what looks to be right but it wont shut down have to stall it. i was looking at it and like i said operates fine but im thinking maybe the rod isn't adjusted right. can it be adjusted? if so how? also could it be something internal thats not right? truck rines fine just doesn't always shut down when you want it to anyways any helpo would be appreciated thanks in advanced.