Disclaimer: I'm not technical. What are the most common reasons a gas-gauge does not work?
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Disclaimer: I'm not technical. What are the most common reasons a gas-gauge does not work?
bad ground to the gauge/pump *I think*. Mine only works when its low. top it off when I go ride and it works for me!
Wheelin' East Texas in a RED XJ
RED 98 XJ with 4.5" lift, ZJ steering, front and rear locked on 33's
cowl intake, Cobra CB, SYE, bumpers, 10K winch, lights
,___________
//___l__,\____\,00_
l_--- \___l---[]lllllll[]|
(o)_)--(o)_)--(o)_)
Crist, the way it works is that when you turn on the key, power goes directly to the gauge. Then through it to the sending unit. The unit then acts as a variable resistor, changing as the fuel level changes. The power goes from there to ground. If the gauge doesn't work at all, then probably the power is not getting to the sending unit. If it only works a little or incorrectly, then it is usually a ground issue
230 hp 4.3L Chevy
Built 4L60E with manual lockout
Atlas 4 speed
Griffin radiator
On board air
Warn 9.5ti on custom bumper
7.5" RE front and bastard pack rear on custom long arms
30 gal gas tank
lockers
And a bunch of other stuff
Poked around a bit today... No progress. Trip to the local mechanic for help.
Mine is off by quite a bit, I think I need a new float which on mine is part of the whole fuel pump/filter assembly in the tank and isn't a cheap part
mine always reads a quarter a tank lower then whats in it. example. full tank shows 3/4. It drove me crazy for a while now I'm use to it.
One more part and I'll have a new Jeep
What I learned: The gauge-needle is moved by magnets driven by 1-ohm to 88-ohm(full-tank). Applied voltage... Watch the needle go ♬ up-and-down, up-and-down ♬. Cleaned terminals on sending-unit and applied dielectric-compound. All is good in Désirée land again!
Last edited by Crist Clapper; 03-18-2015 at 08:39 PM.
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