Bad fuel gauge or bad sending unit?
#1
Bad fuel gauge or bad sending unit?
Hey guys,
My fuel gauge is reading on E and I've put at least 15 gallons into the front tank and its still on E. The gauge does go all the way to full when the tank switch is unplugged and the key is turned on. My question is, Do you guys think its the sending unit in the tank? or do you think its the gauge itself? Both of which arn't exactly cheap, I juts want to know where I should spend my money to get it fixed.
My fuel gauge is reading on E and I've put at least 15 gallons into the front tank and its still on E. The gauge does go all the way to full when the tank switch is unplugged and the key is turned on. My question is, Do you guys think its the sending unit in the tank? or do you think its the gauge itself? Both of which arn't exactly cheap, I juts want to know where I should spend my money to get it fixed.
#2
Sensors are built so if it is unplugged it jumps to one extreme value and when grounded, goes to the other... So it should read full one way (unplugged) and empty then other (when grounded) If you get a potentiometer of some sort and hook it onto the gauge wires, you can turn it and control the gauge. (I keep one in my tool box and use it to verify)
With that being said, it sounds like it is your sending unit.
With that being said, it sounds like it is your sending unit.
#3
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#12
pulled this off this site:To test the gauge:
Unplug the wiring going to the tank.
Turn on the key with the rear tank selected.
Note where the gauge points too (pegged full).
Short the wire with the yellow on it to ground (pegged empty).
If the gauge swings to the other end of the scale then the gauge is good and the sender in the tank is bad.
Do you ever notice the fuel gauge moving at all while driving? hard stops or fast take offs or anything? Could be both floats are full of fuel like said before and stuck down towards E
Unplug the wiring going to the tank.
Turn on the key with the rear tank selected.
Note where the gauge points too (pegged full).
Short the wire with the yellow on it to ground (pegged empty).
If the gauge swings to the other end of the scale then the gauge is good and the sender in the tank is bad.
Do you ever notice the fuel gauge moving at all while driving? hard stops or fast take offs or anything? Could be both floats are full of fuel like said before and stuck down towards E
#13
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