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Discussion Topic:
Fuel Gauge
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Bob56 |
01-23-2024 @ 6:31 AM
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New Member
Posts: 120
Joined: Jun 2012
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The tank is half full and the gauge reads correctly. If I step on the gas the gauge goes to 3/4 full and if I drive the car it pegs the gauge above the full mark where you can't even see the meter. What might cause this before I swap out the gauge? I have a NOS fuel sender in the tank
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37RAGTOPMAN |
01-23-2024 @ 11:48 AM
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Senior
Posts: 1961
Joined: Oct 2009
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HI BOBS56 it would nice to know what year and model you are working on, but I will try to help you PHOTOS would be great. how was the fuel gauge reading before replacing with a NOS, FORD ? or after market ? I would guess the sender is not installed correctly, maybe at the wrong angle [ gas is sloshing it front to back, I think it should be sideways to read correctly, you could remove the sender, hook up a ground wire to it, then move the float and have someone sit in the drivers seat and they can watch the gauge and see if it reads correctly out of the tank [ is the tank new, ? ] a NOS SENDER does not mean it is any good, did you test it before installing ? let hear how you made out, hope this helps 37 Ragtopman, Maine
This message was edited by 37RAGTOPMAN on 1-23-24 @ 3:24 PM
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Bob56 |
01-24-2024 @ 4:05 AM
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New Member
Posts: 120
Joined: Jun 2012
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1936 Club Cab. Sending unit is installed side to side. With no movement of the car just pressing on the gas it moves from 1/2 to 3/4 full.
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37RAGTOPMAN |
01-24-2024 @ 7:56 AM
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Senior
Posts: 1961
Joined: Oct 2009
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Bob56 was the car rewired,? it sounds to me the wiring on the back of the dash cluster is not wired correctly looks like the fuel gauge is acting like a ammeter, ? either that a wire is shorting out the system, I would disconect the generator and run the engine, and see if that make a difference, for testing only if it does,,, go over the wiring in the car, has the car been rewired ? hope this helps 37Ragtopman, Maine
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Bob56 |
01-25-2024 @ 4:39 AM
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New Member
Posts: 120
Joined: Jun 2012
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Car has not been rewired. I dropped the tank to clean it out from sitting and put it back in. Prior to that it worked fine
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51504bat |
01-25-2024 @ 6:47 AM
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Member
Posts: 254
Joined: Apr 2020
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Ground issue from dropping the tank? Just a guess.
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trjford8 |
01-25-2024 @ 7:36 AM
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Senior
Posts: 4215
Joined: Oct 2009
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I agree that it sounds like a ground issue. Make up a ground wire and attach it to a screw on the sender. Then attach the other end to a clean spot on the frame to see how the gauge reacts.
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37RAGTOPMAN |
01-25-2024 @ 1:04 PM
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Senior
Posts: 1961
Joined: Oct 2009
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if might be a bad ground, but if the gauge reads full it most likely the wire goig to the sender is grounding, I do not think if you loose the ground, the gauge will not read, I would check the wire running along the frame and see if has frayed wiring,,even one of the metal clips could have rubbed threw, the only thing to make a gauge to read full is if you ground the lead going to the back, or a bad sender is faulty When having issues,with a problem. explaining in more detail, helps fellow member to solve your issue, try hooking up the old sender, you said it worked before you changed the sender, now it does not work ? hope this helps 37Ragtopman , Maine
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TomO |
01-25-2024 @ 5:10 PM
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Senior
Posts: 7253
Joined: Oct 2009
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What is the P/N stamped on the sending unit? I would not change the gauge, it appears that the problem is in the sending unit.
Tom
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Bob56 |
01-27-2024 @ 9:54 AM
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New Member
Posts: 120
Joined: Jun 2012
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Sorry for the delay. I do not see any part # on the unit
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