hi every 1 i need some help. i ran out of gas the other day when my gauge said i had 1/4 tank left. and when i fill it up all the way the gauge reads a 1/2 past full. ne ideas on whats wrong? im not too good with wiring so you might need to explain things too me.


Jazz

 

Here’s how to test the fuel gage.

Remove the sender wire going to the gage.

Wrap the bare end of the wire so it can’t touch anything.

Obtain 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.

0Ω = Empty, 90Ω = Full

If the gage is good it will display a smooth transition from end of it’s range to the other.

Therefore the problem would be with the sender or wiring going to it.

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Happy Racing!

 

i have the same problem in a 1990 rs 305 tbi. if i figure it out i will let you know. let me know if you find a solution thanks

 

well i actually just marked were it actually runs out and fill it up before then. its a temp fix itll i get time.