I am driving a 1991 ford e350 cutaway van with an ambulance package. Utalitarianly great, but this starting problem is leaving me stranded. I recently drove up to Oregon and had problems cold starting. Changed all 8 glow plugs, glow plug controller, fuel filter, air filter, oil change. All was finally going well for 2 days. I came back down to California and not my WTS light isn't coming on when I turn the key. I ran a volt meter across the Glow plug controller and this is what I got:
Key off: 2 large post 12 volts
1.7 volts to the always hot (across from bendy metal strip)
0 to key power (white)
key on: 0.25v across 2 big posts
1.45v control to big post
It is not working to jumper across the two big posts to force the glow plugs on (at least it didn't last night). Is it possible I fried a fusable link? If so where would it be? I checked all the fuses by my feet and all were good. I have no PCM fuse, not even sure if I have a PCM. I am traveling for work right now and this is happening at the worst possible time for me.
Also the horn is only working intermittently, and my tag light went out and didn't respond to new bulbs, not sure if that has to do with anything.
Thanks for your time.