I am new to the forum, but looks like if anyone can help it's you guys!
I've got an '86 CJ7. Recently took the plunge and dropped in a 4.0L from a '99 cherokee. I took it upon myself to modify the harness to remove the unneeded circuits (AC, ABS, etc.). And, wouldn't you know it, I can't get it to crank. I've purchased the OEM service manual for the Cherokee for the wiring and checked all the circuit logic (not saying I didn't miss something). The starter will fire, but she won't start.
I bought an OBDII to read the computer. One night, after a little ugly wire splicing, I got some trouble codes. Coolant temp switch, Evap solenoid and Battery temp senser. I replaced the coolant temp switch and now this thing is going crazy.
The fuel pump does not time out, stays on in the "run" position, and the automatic shutdown relay is buzzing away.??????? Now the OBDII won't even link up with the computer.
I'm at my wits end and could use some advice. Thanks in advance.