The other infernal wiring thread.

[superburban]

My suburban's guage fuse blew and I cant locate the short that caused it. It's been cold and snowy, so I just rooted around under the dashboard for a while, til I found the headlight buzzer, which started buzzing nonstop after the fuse blew, and rupped it out. I have been driving for a week with no guages.

If I change the fuse, it blows as soon as there is acc power. I was thinking of starting by removing and testing the gauges, then working my way out. My reasoning is that if the short was happening after the gauges, I would merely have a wacked out reading on one of them, but if the short was happening before the feed to the gauges, it would blow the fuse instantly, like what I am experiencing.

Whaddayathink?

 

[mangus580]

I know my brothers 82 Civvy blazer had a fuel heater underneath the manifold. It was powered on the same circuit as the gauges. Might want to see if you can find someone with a civvy schematic....

 

[superburban]

You may have something there! The "fuel heater" on 85's is in the filter base. I changed from the box type to a spin on, and thusly unplugged all of the wires going to the old base. I wonder if those loose wires have worked their way down to some metal part and worn through...



To the Superburban. Away!!!

 

[superburban]

Fixed! When I popped the hood to check the old filter base wires, I noticed that on of the wires to my temp sensor was touching an injector line. It had rubbed through the insulation, and welded itself to the line. I pulled it loose and covered it up with electricians tape.

Now you can all stop worrying about me.

 

[pa.rich]

Glad there wasnt a fire, although that would have warmed you up!

 

[superburban]

I'm just waiting for the day when this truck just falls apart. Completely apart. I imagine in my brain every single fatener coming out at the same time.

If it happened, I would not be surprised.