TBI wiring chewed up, 93 GMC Sierra 5.7L V8

[masher41]

Had some chipmunks under the hood of my 93 GMC Sierra 5.7L, chewed up all tbi wiring. Would like to replace the wires vs splicing, having trouble finding a stock harness, any suggestions? Should I just splice/heat shrink?? Opinions?

 

[someotherguy]

Depends on the amount of damage. You'll have a hard time finding a new harness, and finding a good used one can be hit or miss as there are some pretty significant variances between year models and equipment. About the only 100% drop-in harness for your truck would be from another 1993 with same type of engine and transmission. Similar models are close and may yield a harness that can be modified easier than your existing one can be repaired, but let's see first just how bad yours is?

Richard

 

[masher41]

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[masher41]

Depends on the amount of damage. You'll have a hard time finding a new harness, and finding a good used one can be hit or miss as there are some pretty significant variances between year models and equipment. About the only 100% drop-in harness for your truck would be from another 1993 with same type of engine and transmission. Similar models are close and may yield a harness that can be modified easier than your existing one can be repaired, but let's see first just how bad yours is?

Richard

Richard III posted a pic to my original post, it's not a very good pic but you can see some of the damaged wiring. From the sound of your post I should prob plan in a good solder/heat shrink repair.

 

[Erik the Awful]

www.amazon.com/gp/product/B07L5JW5G9/
Buy a bucket of heat-shrink splices. When I was a Nissan tech there was a recall on the VG30 engines, and we routinely replaced the injector wire harness. These were OEM issue for the recall. I've used them for twenty-five years now, and so long as you test the grip of the crimp before you heat-shrink, they're absolutely awesome.

 

[someotherguy]

Richard III posted a pic to my original post, it's not a very good pic but you can see some of the damaged wiring. From the sound of your post I should prob plan in a good solder/heat shrink repair.

Looks like they ate your injector wiring and the PCV vacuum tube... is there more damage I'm not seeing?

The injector section is available as a repair pigtail, by the way.

Dorman offers the PCV tube but the rubber boots on it are trash and will fall apart quickly. Some carefully-routed vacuum hose (must be rated for oil/vapor) works just fine as long as you don't get it in a position that it will kink. MUST be rated for oil/vapor or it won't last.

Richard

 

[Schurkey]

www.amazon.com/gp/product/B07L5JW5G9/
Buy a bucket of heat-shrink splices.

I'd be willing to try something like that. They're two-out-of-three of the way I tend to do things.

My current procedure is to use copper rings that I get from NAPA (but I can't find them on their web site.) Put the wires together, crimp the ring, then solder, then cover with adhesive-lined heat shrink. More work, but crimp-then-solder-then-heat-shrink makes me moist. It's probably irrational.