kaptinkaveman
NAXJA Forum User
- Location
- Montana
I have acquired an 89 Cherokee that has had the wiring hacked on!! When I first got this it would start but not shut off with the ignition switch. The previous owner has installed a switch between the battery positive and the starter relay and another one for power to the fuel pump relay. I then found that there was an extra wire added to the ground side of the fuel pump relay. Now the fuel pump relay is wired properly the engine would run with the ignition switch in the start position but die in the run position. Thinking that the switch crapped out I got a new one. Before installing it I used a screw driver to actuate it on the floor.
It had the same issue. Start then die in the run position. Since I had the dash apart and another Cherokee I swapped ECMs and now it will start and run but once again not shut down. Now you have to pull the B+ latch relay or the fuel pump relay to kill it. And as soon as they are replaced the fuel pump starts up again.
I have went so far as to unplug the ignition switch wile running and nothing changes. Removing the charge wire from the alternator will make it stop running when the ignition switch and battery are disconnected. The instant the battery is hooked up the fuel pump starts to run and the latch relay clicks.
I have swapped all the relays with known good ones from the other jeep and am ready to pull my hair out. I have a Factory Service Manual on the way but the wiffy poo wants her spot in the garage because of the snow.
If any of you have a direction I should take it would be greatly appreciated!! This was originally a project for my 12yr old and I. Right now I would like to do a physics experiment with Tannerite with it!
It had the same issue. Start then die in the run position. Since I had the dash apart and another Cherokee I swapped ECMs and now it will start and run but once again not shut down. Now you have to pull the B+ latch relay or the fuel pump relay to kill it. And as soon as they are replaced the fuel pump starts up again.
I have went so far as to unplug the ignition switch wile running and nothing changes. Removing the charge wire from the alternator will make it stop running when the ignition switch and battery are disconnected. The instant the battery is hooked up the fuel pump starts to run and the latch relay clicks.
I have swapped all the relays with known good ones from the other jeep and am ready to pull my hair out. I have a Factory Service Manual on the way but the wiffy poo wants her spot in the garage because of the snow.
If any of you have a direction I should take it would be greatly appreciated!! This was originally a project for my 12yr old and I. Right now I would like to do a physics experiment with Tannerite with it!