• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

I’d love to have a working gas gauge. Any help please!

Herk

Member
Local time
9:19 PM
Joined
Jun 23, 2019
Messages
15
Reaction score
30
Location
Johnstown PA
i have a 67 Belvedere. When I got the car the tank was out and there was no fuel sending unit. I installed a new one from summit.
No gauge though. So we ran a new ground. Still no gauge. Any ideas?
Thanks!

95A8A378-C3B8-4E29-A7DE-836BA848334D.jpeg
 
Have you tested your gauge?
 
Ground strap from hard line to hardline at the sender. It jumps the rubber hose. Also like Jerry said.. Have you checked the gas gauge?
You can test it with a couple aa batteries and a couple leads..

 
Last edited:
Take the wire that attaches to the sender at the tank. Use a screw or paperclip or something and ground that wire. At the dash, turn on key and gas gauge should peg 'full'. If it does, your wire to gauge, and gauge are fine, the problem is at the sender. When you say you ran a new ground, did you run the ground from the sender itself or just from the tank? As stated above, the senders get their ground via a short metal strap that clips to the sender fuel line and the fuel line on the chassis. Anyway, if grounding the sense wire does not cause the gauge to peg full, then your issue is likely the wire going from the tank forward. They usually go up through the trunk and then forward to the dash, so check the wire in the trunk area first, the rest is trial and error. Also, if none of your gauges work, check fuses first, then check things on the gauge cluster itself, like the dash voltage regulator. Basically, with a properly grounded, new sender you will just need to check everything else. Unfortunately, at 50+/- years old, the usual suspects are everything.
 
Does the temperature gauge work?
Good question as when I encountered my loss of fuel and temp gauges the circuit board was partly fried (my F-up) so repaired it with a conductive paint from a rear window de-fog repair kit...advice of a fellow member and it worked..
 
Ground strap from hard line to hardline at the sender. It jumps the rubber hose. Also like Jerry said.. Have you check the gas gauge?
You can test it with a couple aa batteries and a couple leads..


Awesome, I’ll give that a try. Thanks!
 
Thanks fellas. I’ll check it out and report back later.
 
When I put a new gas tank in, I looked at the ground strap that jumps the rubber fuel line and figured I could do better. I snipped the strap in half and then pushed on a 14 ga. female wire connector attached to a black 14ga. wire that I grounded to a stainless screw into the body.The idea that the sender needs to ground thru the 50yr. old clips that attach the fuel lines to the body was odd at best. Never had an issue yet with the fuel gauge not working, just sayin.
 
F71BE3EA-B091-4618-A7EC-C52852FD51B9.png
I didn’t have a working gauge for 29 years. It was the ground all along. Sure feels good to see this.
 
In all my years chasing electrical demons (won't admit how many unless ya gimme a beer) friggin GROUNDING has been the most common culprit! If in doubt ground it out...
 
Keep in mind, a few things have to work together, reading right, for the gas gauge to work. Besides a good ground...

1) The gauge itself needs to work. Test it! On the bench, I use 3 D batteries, that add up to 4.5 volts. (Close enough) Arm moves slow, so give it time to move completely.
2) Sending wire in good shape. Check with an ohm meter.
3) Sending unit, at and inside the tank, needs correct readings, from full to empty.
 
Auto Transport Service
Back
Top