2001 jeep Cherokee sport engine wire harness

replace wire harness in 2001 jeep cherokee sport

I need advice, started to replace bad engine wire harness in my 2001 jeep Cherokee sport 4.0 /4 The number 2 injector wire has no power to it and is causing a misfire.

It was first reading and misfiring on number 6, replaced connector and worked for one day then engine light came on and said misfire in 3 and multiple misfire. After trouble shot the whole system and changed coil pack - changed fuel injectors- changed spark plugs- pcm - to know avail. Tried to visually look for bad wire in the number 2 wire and no luck. Tested the number 2 wires with new plugs and no flashing light. tested all other fuel injector connections made test light flash except number 2.

I started to take old engine wire harness out labeling and taking pics and video so i can replace. I got down to the last connection behind the motor and under the car that i traced to 2 connections unplugged and tried to pull out and up thru the motor and it seems like there is something else connected. What could that be????? is it a ground or a wire that is connected under the car????

I unhook the two connections under the car on the drivers side.Theirs no going back at this point. Please looking for some good advice and obviously knowledge that I missed. What am I missing and can I cut wire close to top and re-splice when I receive new harness?

Yours truly

Hopefully not screwed

Dean

Comments (1)
No. 1-1
ScottyKilmer
ScottyKilmer

Editor

realize you have to load test power wires and ground wires FIRST to see which wires are bad. Start there, testing between injectors and computer wiring and pray you find a short and it doesn't need a new main computer