Fuel gauge reads Past full all the time
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Joined: Jun 2009
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From: N.E. Ohio
Car: 87 Gta
Engine: 5.3
Transmission: 4l60e
Axle/Gears: 3.42
Fuel gauge reads Past full all the time
Hey guys,
Just changed my sending unit to try and fix the problem. (fuel level always reads full). It seems i still have this problem even with the new one. The only thing is that when i get almost to completely empty (1-2 gallons) itll start to read less and fluctuate between full and empty. Once its low enough it just reads empty. Can anyone shed some light on this for me?
Just changed my sending unit to try and fix the problem. (fuel level always reads full). It seems i still have this problem even with the new one. The only thing is that when i get almost to completely empty (1-2 gallons) itll start to read less and fluctuate between full and empty. Once its low enough it just reads empty. Can anyone shed some light on this for me?
Thread Starter
Senior Member
iTrader: (1)
Joined: Jun 2009
Posts: 564
Likes: 0
From: N.E. Ohio
Car: 87 Gta
Engine: 5.3
Transmission: 4l60e
Axle/Gears: 3.42
Re: Fuel gauge reads Past full all the time
Any suggestions would help.. Im debating on getting a cyberdyne gauge and sending unit from summit and calling it a day
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Joined: Dec 2008
Posts: 167
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From: Illinois
Car: 1990 Z28 Camaro
Re: Fuel gauge reads Past full all the time
Sounds like a wiring issue somewhere in the wiring of the fuel sending unit check it with a paper clip on the back of the car where the plug is on the back seat area infront of the axle I belive its the two on the right that you place it in but not for sure on the top of my head and if it goes down to empty when you turn the key with it in then you got bad wiring somewhere from there to the sending unit.
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Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Car Gets 1,000,000 Miles To The Gallon
Here’s how to test the fuel gage.
Remove the sender wire going to the gage.
Tape the bare end of the sender wire and put it aside.
Use a potentiometer with a value of 90Ω or the closest you can find.
Connect one end the potentiometer to the gage from the location you removed the sender.
Connect the wiper of the potentiometer to ground.
Turn the key to RUN.
Slowly adjust the potentiometer from 0Ω to 90Ω.
If the gage is bad it will exhibit the problem you have.
If the gage is good it will display a smooth transition from one end of it’s range to the other.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“I Didn’t Jump The Start, The Flagman Was Late”
.
Remove the sender wire going to the gage.
Tape the bare end of the sender wire and put it aside.
Use a potentiometer with a value of 90Ω or the closest you can find.
Connect one end the potentiometer to the gage from the location you removed the sender.
Connect the wiper of the potentiometer to ground.
Turn the key to RUN.
Slowly adjust the potentiometer from 0Ω to 90Ω.
If the gage is bad it will exhibit the problem you have.
If the gage is good it will display a smooth transition from one end of it’s range to the other.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“I Didn’t Jump The Start, The Flagman Was Late”
.
Thread Starter
Senior Member
iTrader: (1)
Joined: Jun 2009
Posts: 564
Likes: 0
From: N.E. Ohio
Car: 87 Gta
Engine: 5.3
Transmission: 4l60e
Axle/Gears: 3.42
Re: Car Gets 1,000,000 Miles To The Gallon
Alright thanks guys im goin to test out the resistance tonight hopefully
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