Gas Gauge Ground
Thread Starter
Instructor
Joined: Sep 1999
Posts: 109
Likes: 0
From: Houston TX
Gas Gauge Ground
'72 LT-1 convertible. Gas gauge has worked well since I got the car. Last week when I started the car, the gauge was reading at 3:00. Then it fixed itself shortly after. The next time I ran the car it read 3:00 again and has stayed there. I went over Wilcox's trouble shooting guide but I do not know where the gauge ground is located. Can someone help here? Thanks.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
If the gauge is at 3, then the issue isn't a grounding issue it's an ohms input issue so I'm not so sure how closely you read the guide....
Pull the ohms wire off the gauge sender at the tank and ground it out... it should make the gauge go to empty. If the gauge does this then the the dash unit is fine (as well as all the wiring from the sender to the gauge). Then I'd pull an ohms reading from the sender to see if it's working properly.
Willcox
Pull the ohms wire off the gauge sender at the tank and ground it out... it should make the gauge go to empty. If the gauge does this then the the dash unit is fine (as well as all the wiring from the sender to the gauge). Then I'd pull an ohms reading from the sender to see if it's working properly.
Willcox
Last edited by Willcox Corvette; Sep 6, 2018 at 05:05 PM.
Thread Starter
Instructor
Joined: Sep 1999
Posts: 109
Likes: 0
From: Houston TX
If the gauge is at 3, then the issue isn't a grounding issue it's an ohms input issue so I'm not so sure how closely you read the guide....
Pull the ohms wire off the gauge sender at the tank and ground it out... it should make the gauge go to empty. If the gauge does this then the the dash unit is fine (as well as all the wiring from the sender to the gauge). Then I'd pull an ohms reading from the sender to see if it's working properly.
Willcox
Pull the ohms wire off the gauge sender at the tank and ground it out... it should make the gauge go to empty. If the gauge does this then the the dash unit is fine (as well as all the wiring from the sender to the gauge). Then I'd pull an ohms reading from the sender to see if it's working properly.
Willcox
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
http://repairs.willcoxcorvette.com/1...-unit-testing/
Willcox
