Does the Check Engine Light turn on when you cycle the key from Off to Run?

If not, bad computer.

Sorry to pile on.

 

only lights on dash when I cycle key on and off are battery and abs. Abs goes right off

 

Yes it sounds like the injectors are not firing. You need to put another PCM computer in it and I think you will be good to go.

 

I am sorry but I have no idea how to do that and how can you be sure it's that not pressure regulator

 

The main thing that goes wrong with a fuel pressure regulator is that it gets a ruptured diaphragm and will leak fuel out of the nipple on top. This will let the fuel pressure say at about 40 psi and not drop down to about 32 psi at idle.
Not saying the fuel pressure regulator is not bad but it is not your problem at the moment.

The PCM Computer has a center 10mm wrench size bolt in its plug and is taken out through a gap between the drivers fender and the inter fender with the front tire removed.

Attachment 285671

Attachment 284976




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You may also want to check to see if you have power to the PCM and it has a good ground at the passenger fender behind the battery before changing PCM out.

Also if it is the PCM and if you are in a hurry just plug in the replacement PCM and tie it up out of the way. It does not have to be mounted in its hole to run the engine.

Here is a link to a similar problem:
https://www.ford-trucks.com/forums/1...r-i-p-pcm.html

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