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Topic: Fuel gauge shimmy

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Fuel gauge shimmy (1/7)
 11/6/21 7:53pm
Mark Laird
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Milford, DE - USA

Vette(s):
1977 C3 Auto Coupe Lt Blue/Dk Blue Prev. 1968 C3 convertible 4spd Red 1984 C4 Automatic Silver 2000 C5 Automatic Black


Joined: 11/6/2021
Posts: 36

I think I know the answer to this but before I tear it apart just want to make sure..

The fuel gauge shimmys when I'm driving..Is this a tank sending unit problem?

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Re: Fuel gauge shimmy (2/7)
 11/6/21 9:14pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 19904

Prolly not. More likely the resistor on backside of the gauge panel for the fuel gauge. Then again, being a '77, it might not have the resistors on the gauges like earlier cars had. Not sure..



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Re: Fuel gauge shimmy (3/7)
 11/7/21 11:49am
Reds82CELifetime Member
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McKinney, TX - USA

Vette(s):
1982 Collector Edition, Silver-Beige metallic, 40000 miles and counting. 2015 Z51 Red Convertible


Joined: 4/8/2005
Posts: 209

I have had this problem a couple of times over the years on my 82CE.  It always came down to a faulty sending unit in the fuel tank.   I never had a problem where the fuel sending unit registered empty or full all the time,  my problem was more like yours, the fuel gauge needle would bounce around.  Both times the little metal arm that slides up/down the wire coil to measure fuel level was making a lousy contact.  I tried cleaning with limited success (worked for a few months), so now I just replace when it goes bad (due to the effort and contortions to get that dang thing out).  I know my 82 does not have that resistor on the back of the fuel gauge.  As Joel says, if you have that resistor, that would also be my first suspicion. 



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Re: Fuel gauge shimmy (4/7)
 11/16/21 2:16pm
rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion


Joined: 10/14/2003
Posts: 1154

My 77 has the resistor it should read 90 ohms

Re: Fuel gauge shimmy (5/7)
 11/30/21 5:51pm
spinalman
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Lancaster, PA - USA

Vette(s):
1970 Green Convertible


Joined: 8/24/2008
Posts: 17

I had a similar problem with my 1970. I replaced the gauge. No problem now. The only problem is getting to the gauge to replace it.

Re: Fuel gauge shimmy (6/7)
 12/12/21 11:47pm
Mark Laird
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Milford, DE - USA

Vette(s):
1977 C3 Auto Coupe Lt Blue/Dk Blue Prev. 1968 C3 convertible 4spd Red 1984 C4 Automatic Silver 2000 C5 Automatic Black


Joined: 11/6/2021
Posts: 36

I've got the gauge just trying to get access to it to replace. My hardest problem is getting the aftermarket radio out from the gauge panel..I need some sort of "key" I was told so the radio will release from the cradle it sits in..The radio is 20 years old and a Pioneer.

Re: Fuel gauge shimmy (7/7)
 12/13/21 1:35pm
spinalman
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Lancaster, PA - USA

Vette(s):
1970 Green Convertible


Joined: 8/24/2008
Posts: 17

Can't help with that one. Have you tried your ignition key to unlock the radio?

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