Please help, fuel pump wiring
04-09-17, 10:02 AM
#1
Full Member
Thread Starter
Please help, fuel pump wiring
I started to dig into why my fuel gauge hasn't been working and ran into a doozy.
I understand that blk/wht is power
Blk is ground
And that red and blue are for level and low fuel lights.
The has been running fine so I'm confused to how this is working since the blk/wht is not hooked up
88 fc vert na
I understand that blk/wht is power
Blk is ground
And that red and blue are for level and low fuel lights.
The has been running fine so I'm confused to how this is working since the blk/wht is not hooked up
88 fc vert na
04-09-17, 11:35 AM
#2
i would pull the pump from the tank and see what they have done, likely there is a broken bulkhead stud on the inside of your fuel pump housing and they decided to use one of the sender unit wires instead.
not the proper way to fix it obviously, but i guess it's one way to finish getting from point a to b for a little while. except they apparently never bothered to actually fix it before passing the problem on to you. to which i am not entirely or even remotely surprised by it, because crap like this finds its way to FCs all the time.
not the proper way to fix it obviously, but i guess it's one way to finish getting from point a to b for a little while. except they apparently never bothered to actually fix it before passing the problem on to you. to which i am not entirely or even remotely surprised by it, because crap like this finds its way to FCs all the time.
Last edited by RotaryEvolution; 04-09-17 at 11:39 AM.
04-09-17, 12:20 PM
#3
Full Member
Thread Starter
i would pull the pump from the tank and see what they have done, likely there is a broken bulkhead stud on the inside of your fuel pump housing and they decided to use one of the sender unit wires instead.
not the proper way to fix it obviously, but i guess it's one way to finish getting from point a to b for a little while. except they apparently never bothered to actually fix it before passing the problem on to you. to which i am not entirely or even remotely surprised by it, because crap like this finds its way to FCs all the time.
not the proper way to fix it obviously, but i guess it's one way to finish getting from point a to b for a little while. except they apparently never bothered to actually fix it before passing the problem on to you. to which i am not entirely or even remotely surprised by it, because crap like this finds its way to FCs all the time.
04-09-17, 03:02 PM
#5
Full Member
Thread Starter
I gotcha now. So if this the case and the PO swapped them out, an I going to have to find a whole assembly to replace it with?
04-09-17, 04:50 PM
#6
Originally Posted by jlcollins973
I gotcha now. So if this the case and the PO swapped them out, an I going to have to find a whole assembly to replace it with?
Edit: Ben evidently already spelled this out above.
04-09-17, 05:11 PM
#7
Full Member
Thread Starter
That won't change the fact that the previous owner repurposed the wires at the car side. What probably happened is one of the studs on the bulkhead broke off, and instead of fixing it, decided to be "clever". So you can fix or replace the fuel hanger assembly and revert the car harness to stock. Then it should all work as intended assuming nothing else was mucked with. I wouldn't assume anything with these cars though, you won't know more until you investigate with a DMM.
Edit: Ben evidently already spelled this out above.
Edit: Ben evidently already spelled this out above.
Looks like I'm tracing wires next weekend
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04-09-17, 05:43 PM
#8
Full Member
Thread Starter
Is there some sort of fix for those bulkhead fittings? I only see the whole assembly online for 340.00. I'll keep looking though.
04-09-17, 07:32 PM
#9
Originally Posted by jlcollins973
Is there some sort of fix for those bulkhead fittings? I only see the whole assembly online for 340.00. I'll keep looking though.
It's easy.
- Grind off the top layer of epoxy to expose the brass contact.
- drill a hole through the center, but do not completely drill out the contact.
- Use SS nut, bolt, and washers to make connection as original.
Last edited by DC5Daniel; 04-09-17 at 07:34 PM.