Blowing a fuse

[Rusty XJ]

I was driving home from work today when the engine shut off.  After looking around a bit we found the 30amp maxi fuse for "Engine Control 1" had blown. We stuck another in and it blew as soon as I started it. So after about three 30amps and one 40amp we went to 60 just to get it back to work without a tow bill. It made it back into the parking lot and blew that one as well. So tomorrow I am gonna have to dig the old wiring diagram out and chase this beast. But first I wanted to ask around to see if anyone else has had this problem and aside from physical wire damage what components/modules could be suspect? Its a 95 XJ Cherokee 4.0L 5spd

[(Tattoo) Jack]

   Ricky,

   Also try posting here... http://www.naxja.org/ between these 2 sites there's bound to be someone to help ya.

   Sorry, I can't help.

   Tattoo

[Rusty XJ]

We got it up and running yesterday. The problem was the wire going to the oxygen sensor was touching my header which melted the plastic coating and kept shorting out every time it touched. Apparently the O2 sensor is wired through the fuel pump relay which caused the 30amp maxi fuse to blow out. I just repaired the wire and zip tied it out of the way of my header. I don't know if somewhere along the line that wire got rerouted but it is in kind of a stupid spot to begin with. Unless it was out of the way with the factory manifold and the aftermarket header was closer to the wire.