87 hilux pickup fuel guage problem

hey all. hope you can help me out on this one.
the fuel guage on my dash doesnt move above zero. firstly i thought it was just low because i hadnt used the truck for a while
but, even after filling up what would normally be about half a tank, the guage still read empty.
i drove it around a bit, and it did briefly come back to life, reading almost full. but now reads empty again.
have i got myself a fuel sender or fuel guage problem? does anyone know what the voltage reading is the sender feeds to the guage? at the moment its varies between 1 and 7v but never constant.
any help is much appreciated
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wrote:

Sure sounds like a dead gauge sender to me, especially if the gauge "comes back to life" consistently every time the tank reaches that 'almost full' level. Time to clean out the bed and see if you have an access hatch to get to the top of the fuel tank, otherwise it's fuel tank dropping time.
(It could be a loose connection at the tank or a bad gauge if it was just plain dead always, at any level. The "works at 3/4" eliminates that possibility.)
Standard disclaimer: Have the fuel tank nearly empty, do the work outdoors with a breeze (not in a sealed up garage with the door down), lots of fire extinguishers on hand, No Smoking, Sparks, Ignition Sources Or Open Flames within at least 50 feet, and remember that gasoline fumes are the dangerous part.
If there were no fumes present, you could put a match out in a pool of liquid gasoline - it's the gasoline vapors mixed with atmospheric oxygen anywhere between the (rather wide) upper and lower explosive limits that can go BOOM!! on you.
--<< Bruce >>--
--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
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