tractorman21
SDD Junior Member
What's the proper way to check the glow plug relay? 1997 Superduty has been starting hard lately and i was told to check the glow plug relay.I was instructed to check the two large post for voltage.I was told one stays hot(12 volts all the time) and the other should show 12 volts when the key is turned on.I checked the relay and only 1 side showed 12 volts.with,or without the key being on.I replaced the relay and the new is doing the same thing.Only showing 12 volts on 1 side of the relay.What else could be wrong? Could the new relay be wrong for that application? It's aftermarket,not a ford product.
Any thoughts,or opinions will be greatly appreciated.
Any thoughts,or opinions will be greatly appreciated.