The truck: '99 s-10 LS, 4 cyl., 5 spd man. No codes set. The problem: The fuel gage reads high i.e. 1/2 when it should read 0 (found that one out the hard way), but at random times the needle will crash to the bottom of the gage in a second, stay there for a while (varies) and then jump back up to the prior reading. Also even though the gage reads incorrectly, it responds when adding fuel, moving up what seems to be the correct amount relative to fuel added. It also seems to move down correctly while fuel is being used.(barring the crash issue) The questions: Does this sound like a sending unit problem or possibly a wiring issue? Is there any way to diagnose the difference? Ohm out the wires? If so what kind of readings should I expect? If it turns out to be a sending unit, I'll just have to keep using my tripmeter and do the math at fillup. Those suckers cost $535 for the part alone. :) Any help would be greatly appreciated. Thanks, Sam.
- posted
20 years ago