Okay, so it turns out that Moby was the easiest to fix and the fastest. With some help from Motech, we were able to determine that there was some kind of short in the JK temp sensor wires. When we had run the wiring harness during install, we had routed it between the motor and firewall and later found there was some damage done to it. This initially caused an issue with the tach and appears to be the source of our problem this time. Rather than pull the whole loom apart, Robbie and I talked about it and decided that the easiest thing to do was to cut the positive lead and run a new wire to the sensor. Being that the crank sensor shares the same ground wire, we decided to leave that alone. After doing a quick check, all looked good again and after a quick test drive, found everything to be working perfectly. Now I just have to spend some time cleaning things up and routing the new wire.
Here's a shot of me locating the temp sensor wire on the main plug going into the JK PCM.
Soldering on a new wire.
Clipping the positive lead on the temp sensor plug.
Getting a good signal again.
Thanks for all your help Motech :thumb:
Here's a shot of me locating the temp sensor wire on the main plug going into the JK PCM.
Soldering on a new wire.
Clipping the positive lead on the temp sensor plug.
Getting a good signal again.
Thanks for all your help Motech :thumb:
