I have a 1996 ford f150 5.0L it keeps blowing the pcm fuse I have replaced the pcm and the fuel pump and multiple fuses if you wait a week and replace the fuse with a new one it will start up and run for a little while and then shut off as it blows the fuse but when you put another fuse in it. It will blow the new fuse and won't even start it will just sit and crank. I have a feeling it's a short but I have no idea where to look at. Can I get some help please I have over $10,000 in this truck I just rebuilt the motor re did all the suspension exhaust system plugs wires and distrubutor but I'm not good with wiring so PLEASE HELP!!!!

 

Fuse 22 supplies power to several other circuits.




I would remove the fuse then use a meter set to ohms to measure the resistance to ground. If it is a short or very low resistance start removing connections to the other devices one at a time until the resistance returns to normal.

I have seen that little "radio" capacitor (on the coil) short to ground more than once.