Originally Posted by
DIYMechanic
It seems like we have been through all this before, lol.
https://www.ford-trucks.com/forums/1...o-start-2.html
Fuse #22 under the hood is the power to the PCM. Check fuse 22 with a meter. Also swap the PCM relay with another one in the relay center (the horn relay is a good one to swap with) and see what you get then.Don't do anything else until you check this fuse, alright?
If Fuse 22 is good and swapping the relays does not help, check the red wire that goes into the wiring connector to the PCM (from the engine compartment side). If you don't have 12V there the PCM does not have power.
If you have power to the PCM and you're not getting a "wait to start" light (I assume you did get the light before all this started happening) I think you are looking at a bad PCM.
Nate, thanks for the help.
There were two red wires on the pcm that came from the engine comp. more spec from uner the relays. Both have 12v but no wts light. all fuses are ok. relays are ok. So I will assume or believe that pcm has gone bad.
My Q on this matter.
I was searching and found out about flashing / reprogramming (er) should I do this with the pcm or look for a new or remanufactured one. I have found reman. for about $120 new ones will kill me at the moment. pls advice.
Look in to this for me pls.
DriveWire - 1997 Ford F-350 XL 8 Cyl 7.3L Engine Control Unit
Edge Products Evolution Programmer 15000
Oh and my apol for repaeting the thread I taught to discuss the pcm only.
http://images.ford-trucks.com/forums.../party0031.gif
peace out