Fuel gauge issue
Thread Starter
Instructor
Joined: Mar 2017
Posts: 101
Likes: 13
Fuel gauge issue
Ok so I’m freshening my dash and getting ready to start putting it back together. I had to replace the resistor on my fuel gauge with a Wilcox 90ohm replacement unit. After doing that and testing the gauges the gauge reads full but will not move no matter what test I do. I have watched the Wilcox video numerous times and have gone step by step. I have checked my input signal wire from the tank to the gauge with my ohm meter and it is good I know it’s not broken. I have power to the gauge and ground to it as the temp gauge works as well as lights. It doesn’t matter if I remove the input wire, ground the input wire, or remove ground no change. I’m apprehensive to believe the gauge is bad because it changed its reading with the new resistor. Thanks
Le Mans Master
Joined: Jan 2001
Posts: 6,741
Likes: 1,383
I had this happen to me recently where I connected, and disconnected, and grounded, and did all kinds of crap with the leads while I was underneath. Take a look at this and make sure that you have a good ground lead with no opens. I actually disconnected my battery before doing anything. My gauge was stuck at about 3 o'clock and by starting from scratch with the key off and the battery disconnected I got it go back to normal.
http://repairs.willcoxcorvette.com/?...1&s=fuel+gauge
http://repairs.willcoxcorvette.com/?...1&s=fuel+gauge
Thread Starter
Instructor
Joined: Mar 2017
Posts: 101
Likes: 13
Thanks I’ll give that try when time permits. I don’t want to order a new Gauge if I don’t have to especially if I’ll just have the same problem.
yea I don’t do that I always disconnect the battery before making my connections/disconnections.
yea I don’t do that I always disconnect the battery before making my connections/disconnections.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,209
Likes: 9,347
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
can you install the gauge then move your float level manually through the gas filler? On my 68 I can almost stick my arm down in there so I bent up a metal wire to manipulate my float while adjusting my aftermarket calibration device. Its actually pretty close on the lower 1/2 of the gauge now
https://www.summitracing.com/parts/cin-sn34
Hope you figure it out
https://www.summitracing.com/parts/cin-sn34
Hope you figure it out
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
If you have a gauge that reads FULL all the time, chances are that the signal line is not making good contact between the tank sender and the gauge. Check both at the gauge and at the tank for the problem. It is more likely to be at one of those two locations, rather than with the wire running between them.
