Diesel Doctor

[mrpyman]

I need some help. I have a Detroit 8.2(in a boat) that when you turn the key off and it is running it doesn't shutoff the solenoid, and it stays running. When the engine is not running the solenoids pulls in and drops off when the key is turned off. I have read the manual and it tells me the solenoid has 2 coils one to pull in and the other to hold it in. I have not had a chance to do the Ohm check yet.This coil is new because the other one burned up last year. So I am thinking it is possibly the relay that energizes the coil, or it is wired wrong. Oh sometimes it will shutoff when the key is turn off not too often but it has happen. Thanks for any Help.