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49 3800 fuel gauge
#1521900 10/14/2023 11:56 PM
Joined: May 2019
Posts: 232
Belvidere IL
J
Jack Ryan
Offline
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Jack Ryan
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Joined: May 2019
Posts: 232
Belvidere IL
Had gas gauge rebuilt by Jim Carter

Hooked it up as they said and as the old one had been

When I power it up it tries to go from empty to less than empty

Battery hooked up negative ground
Re: 49 3800 fuel gauge
Jack Ryan #1521918 10/15/2023 3:27 AM
Joined: Jan 2022
Posts: 2,466
Morris Ranch Texas
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Bill Hanlon Offline
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Bill Hanlon
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Morris Ranch Texas
Power goes to the "E" end of the gauge, sending unit wire to the "F" end.

'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
Re: 49 3800 fuel gauge
Jack Ryan #1521941 10/15/2023 11:39 AM
Joined: May 2019
Posts: 232
Belvidere IL
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Jack Ryan
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Jack Ryan
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Belvidere IL
Thank you

That’s how it’s hooked up

I’ll call Jim Carter tomorrow
Re: 49 3800 fuel gauge
Jack Ryan #1523734 10/27/2023 8:37 PM
Joined: May 2019
Posts: 232
Belvidere IL
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Jack Ryan
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Jack Ryan
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Belvidere IL
OK, done everything suggested by Jim Carter to fix the issue. All was hooked up right. The only thing I have not done that they suggested was to pull gauge back out and sand under it to make sure it has good continuity between it and the inside of the gauge cluster. Could this really be the problem? Thanks.
Re: 49 3800 fuel gauge
Jack Ryan #1523788 10/28/2023 3:51 AM
Joined: Oct 2021
Posts: 6,832
Atlanta, Ga
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Otto Skorzeny Online: Content
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Otto Skorzeny
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Atlanta, Ga
Yes. Poor grounding is the cause of most electrical problems in cars.

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)

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