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#1071320 - 07/11/21 07:48 AM Gas gauge problem  
Joined: Jan 2008
Posts: 1,198
FinallySS Offline
10+ Year
FinallySS  Offline
10+ Year
Member

Joined: Jan 2008
Posts: 1,198
Nice Sunny Hawaii
Aloha guys.

Recently, I'm having problem with my SS gas gauge. I been noticing this for a while, but it just been confirm just the other day and wasn't figment of my imagination.

Problem I'm having is sometimes, on rare occasion, my fuel gauge needle gets stuck on the right side, way passed full mark like the connection at the sender is disconnected. When I noticed this, I was driving, on my way to PT so I figure I'll look under the car when my PT is done. About 10 minutes into drive, gauge started to work normal. This has been going on more and more recently, I just couldn't confirm this until recently.

I'm suspecting something simple like bad ground, but I thought I'll ask here first. What could be more common cause for this? Connection side at the rear or more on printed circuit at the gauge panel? I do have Autometer fuel gauge sitting somewhere if I need to bypass the stock unit, but it's just fuel gauge. As much as possible, I like to stick to stock unit.

Oh, and by the way, since we are on the subject of fuel gauge, how can I stop the needle from going all over the gauge when I'm driving? I had a 85' Gutless before and that fuel gauge didn't bounce all over. Diode in one of the feed line?


1986 Silver MCSS - Poly bushing and Hotchkis spring w/Bilstein, Posi w/3.73, MSD 6-AL, E-Brock 600cfm, Aluminum 2-row radiator.
1986 Black MCSS - R.I.P............Finally.
#1071364 - 07/19/21 02:44 PM Re: Gas gauge problem [Re: FinallySS]  
Joined: Aug 2010
Posts: 293
tom demarco Offline
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tom demarco  Offline
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Joined: Aug 2010
Posts: 293
Mooresville
there are many online procedures to check gauge by grounding the wire at the sender the ground is hidden near the rear bumper this will tell iy if it is the gauge or sending unit

#1071375 - 07/20/21 05:11 AM Re: Gas gauge problem [Re: FinallySS]  
Joined: Jan 2000
Posts: 5,421
mmc427ss Offline
20+ Year
mmc427ss  Offline
20+ Year
Member

Joined: Jan 2000
Posts: 5,421
Pottstown, Pa
Years ago chased the erratic fuel gauge problem. Checked the ground at the bumper, connections at gas tank, the cluster connector in the right lower corner of the cluster. Pulled the cluster and found the three metal female connectors where the gauge plugs into the printed were loose on the printed circuit . Removed those metal connector with a tool i fashioned and rebent the little tabs on each that hold tension to the copper on the printed circuit. Reinstalled with the tool made and no problems with the fuel gauge since.

Another problem with the stock gauges is they have a silicone fluid inside the gauge that dampens the needle movement. Over time the fluids may leak out and the gauge needle will be jumpy. Had to replace a gauge for that reason, When the turn signal was on the volt gauge would dance to the turn signal beat.
Bob

#1071379 - 07/20/21 03:30 PM Re: Gas gauge problem [Re: FinallySS]  
Joined: Feb 2020
Posts: 528
88ssBrent Online content
Member
88ssBrent  Online Content
Member

Joined: Feb 2020
Posts: 528
Friendsville
I always thought mine dancing to the beat of the turn signal was normal. Learn something new around here all the time.

#1071418 - 07/23/21 08:44 AM Re: Gas gauge problem [Re: FinallySS]  
Joined: Jan 2008
Posts: 1,198
FinallySS Offline
10+ Year
FinallySS  Offline
10+ Year
Member

Joined: Jan 2008
Posts: 1,198
Nice Sunny Hawaii
Thanks guys. I will try look for the corrupt this weekend if I can.

If not, I need to wait until next weekend.................


1986 Silver MCSS - Poly bushing and Hotchkis spring w/Bilstein, Posi w/3.73, MSD 6-AL, E-Brock 600cfm, Aluminum 2-row radiator.
1986 Black MCSS - R.I.P............Finally.
#1071421 - 07/23/21 02:49 PM Re: Gas gauge problem [Re: FinallySS]  
Joined: Apr 2011
Posts: 1,187
Hunter79764 Offline
10+ Year
Hunter79764  Offline
10+ Year
Member

Joined: Apr 2011
Posts: 1,187
Grand Prairie, Tx
Not the right way to fix, but I'd think that a small capacitor on the feeds to the volt gauge or gas gauge would filter out some noise. Anybody have any experience with that?


Shawn

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway

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