Engine harness help!!!

[TremblantRanger]

I was replacing my throttle body gasket this weekend, and I noticed that the main engine wiring harness was resting against the EGR tube, and was partly melted!!! It's the one going to the ECU in the upper passenger side firewall going to some kind of junction block behing the power steering pump, see picture. Pictures are for visualization purposes; not from my truck. My question is: up to that lunction, it seems one piece exept for 3 smaller harnesses going from it. Crank sensor, cam sensor, and couldn't trace the 3rd one since it seemed to go somewhere past the drivers fenderwell. Do you think this main harness part would interchange with one from a 3.0 or 4.0? I'm pretty sure things get different after that junction block though. But from the limited info from the haynes manual, they all seem to share the same pin numbers as well as wiring colors. The reason I ask is because my truck is a 1998 2.5L and my boss has a 1998 B4000 2wd laying around in his yard and says I can take anything I want for free. Any help would be appreciated!

 

[sheltonfilms]

There are only two harnesses in the engine bay. The engine harness and the engine bay harness. Engine bay starts at the 3 (only 2 for your truck) bulk head connectors behind the fuse box. It includes the fuse box and connects to the engine harness at that connector next to the intake you have highlighted. Then it wraps all the way around the front of the truck (headlights) and ends at the blower motor.

The engine harness is the entire engine. From PCM to the interconnect to the engine bay harness.
Only other harness that will be there are battery cable harnesses (starter/alternator).

If it was me I would pull what you got, cut the damaged sections out and splice in good wires.


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[sheltonfilms]

First thing you need to do is replace the egr protective wrap that keeps the wires from becoming melted.


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