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fuel gauge not working

yj4roks

NAXJA Forum User
Location
Fallbrook
I have 1990 with the 4.0. I just got the Jeep back to running condition...it was stored for over four years until two months ago when it became mine.
I gassed it up yesterday, after the low gas light came on...I had previously drained all the gas and put in 5 gallons of new. after filling it, the gauge was showing correctly down to 3/4 tank then when i left a buddies house today, it was pegged all the way past full and about the 3 o'clock position. Not sure what to check...I am not the best at electrical. I crawled under and didn't see anything weird with the wires from the point of exit from the tank to where it goes into the body. Should i somehow check the current coming off the sending unit first or is it most likely the gauge? Not sure where to start. Thanks for any help or pointing to threads I didn't see.
 
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