Creech
10-10-2004, 10:44 AM
Alright. Hit the trails yesterday for the last time before I deploy, and as usual the temp guage started to rise. Well, we had to wait on somebody to go get his wife and some ATF for a leaking t-case, so we figured that would be a good time to see why I was running hot.
After quick inspection and test, we figured out the little factory electric fan wasn't coming on for any reason. Simple solution, run wires from fan to toggle to battery. Well, my buddy gets the bright idea to run the jumper wires off the fan to the fuel pump relay in the fuse block since it's hot when the key is on so I don't have to keep popping the hood to shut the fan off. He runs the wires, I turn the key, and POP! Shit, blew a fuse. Fuel pump fuse of course. Replace it, go ahead with running the fan to the toggle and battery, and try to start the WJ.
Cranks like there's no tomorrow, won't hit a lick. Check all fuses inside and out and they're good. Switch relays around under the hood to see if we blew the relay, nope. Guages are working inside. Volts won't go past 9, fuel reads empty and it's half full, temp won't move and the engine hot to the touch. Fuel pump not working and no voltage at injectors. Get it back to my buddy's shop, and plug it up to this fancy code scanner he's got and try to run a diagnostic. That won't work either.
Is my ECM fried? I'm lost here. Any help is appreciated.
After quick inspection and test, we figured out the little factory electric fan wasn't coming on for any reason. Simple solution, run wires from fan to toggle to battery. Well, my buddy gets the bright idea to run the jumper wires off the fan to the fuel pump relay in the fuse block since it's hot when the key is on so I don't have to keep popping the hood to shut the fan off. He runs the wires, I turn the key, and POP! Shit, blew a fuse. Fuel pump fuse of course. Replace it, go ahead with running the fan to the toggle and battery, and try to start the WJ.
Cranks like there's no tomorrow, won't hit a lick. Check all fuses inside and out and they're good. Switch relays around under the hood to see if we blew the relay, nope. Guages are working inside. Volts won't go past 9, fuel reads empty and it's half full, temp won't move and the engine hot to the touch. Fuel pump not working and no voltage at injectors. Get it back to my buddy's shop, and plug it up to this fancy code scanner he's got and try to run a diagnostic. That won't work either.
Is my ECM fried? I'm lost here. Any help is appreciated.