Have asked about this prob. before Someone here told me problem was timer in ecm(computer)Truck will not crank if fuel pump don't cut off on intial startup.Now iwas told at ford parts dept. that if i did not have orig. number on ecm that it is impossible to get correct replacement.My prob. is i replaced it a few years back and can't remember where.The remanufacturer used a case from who knows what.1992 f-150 had it since new.(this is and intermitant problem like when i really need it)
thanks Roy

 

The best I can tell you is to go to the junkyard and find a truck with the same engine and transmission that your truck has. 5.8 can be '92-'95 unless California truck then '92-'94. 5.0 can be '92-'93 only. 4.9 can be '92-'95 unless California truck then '92-'94. The truck must have the same transmission as yours.

 

My 1996 F150 has the 5.8 and is the original engine to the truck. I know there were more 5.0's in the 1996 trucks, but there were some 5.8's too.

 

That is just the list of computers that will work for his 1992 truck. He didn't say the engine size.

 

Sorry it has 4.9 six and electronic overdrive auto

 

Then get a computer from a 4.9 E4OD junkyard truck from '92-'95. If you get it from a '95 that truck can't be a California truck or the computer will be different.

 

Mine is a 96 5.8 and when I ordered my new PCM from advanced auto, they asked for the calibration number if I remember right and thats all they needed. The number was on a sticker on the drivers side door frame.

 

wENT TO local u-pull it yard and found comp. form 94 same tran eng. installed it worked fine for a couple days but then yesterday it burnt up and had to tow my poor old f-150 home

 

Did it actually catch fire or just quit? Either way, it sounds like you have a bad short somewhere that is killing the computer. If it only quit and doesn't smell fried then you may have a power or ground issue.