well the truck died on me last night....just what i need. let me start by saying that just about everything in the fuel and ignition systems are no more than a year old (plugs, wires, cap, rotor, coil, ign. module, ALL 3 fuel pumps, filters). Here's what happened:

-drove to the gas station 1/2 mile away, everything was fine
-went to start the truck back up, lights come on and turns over but nothing else
-checked pressure at the fuel rail, it is good but i bled off the pressure that was there.
-tried to start it again and checked the rail again, the pressure never built back up and i cannot hear the pumps priming when i turn the key.
-jacked with the relay and switched it with the one next to it, still no luck
- plugged my code scanner in and it will not even sequence through the code reading (no code 11 or otherwise) never had a problem with it before

so i think my EEC is dead.

now for the interesting part. i just found out that back in '93 my dad bought an AM kit from ford motorsports which converts my '88 to a MAF system, and includes a wiring harness for it and the injectors. It came with a new PCM, and also converted it from MFI to SFI (pretty cool). so if my comp is dead, what do i replace it with??? I have the old EEC but i know it wont work with the MAF

 

First off, I think your diagnosis is right. Sounds like a dead PCM to me.

I would pull the PCM out and see what code or part number is printed on it. I have no idea what PCM they used in the kit but it was almost certainly a Ford PCM. Hopefully you can figure out what you have from the number.

 

update: so i pulled the PCM and put the old one in there and it did turn the fuel pumps and my code scanner worked properly. i took some pics of the PCM and hopefully someone will be able to tell me what will work

 

Let me google that for you

 

thank you for that haha

do you know if there are places locally that may sell it or is there a vehicle that used it stock that i could look for in a junk yard?

 

The first search result is for an ebay auction for: 89-93 EEC-IV Mass Air Ford Mustang GT 5.0 PCM ECM C3W

ebay is probably your best bet to find a replacement.