gas gauge reads 1/8 full when truck is off and reads empty when truck is on


Asked by May 31, 2010 at 02:34 AM about the 1994 Ford Bronco

Question type: Maintenance & Repair

i have a 94 full size bronco and when the truck is off the gas gauge reads 1/8 to 1/4 full when i turn the truck on it reads empty and this happens no matter how much gas is in the truck i tryed to find the ground but could not find it and if it aint the ground will i haft to take the pump out of tank to find the problem

6 Answers

sounds like your sending unit is bad ,yes the tank will have to be droped.


Most likely the sending unit, however swapping in a different fuel gauge may be easiest, next step to troubleshoot.

1 of 1 people found this helpful.

thank you where is sending unit and you dont think it could be a bad ground


where is ground

3 of 3 people found this helpful.

where is sending unit and how would gauge be the prob where is the ground so i can check iy

sending unit is in gas tank,ground wire is on top of gas tank,it has to be droped to fix it,if you have never droped a tank DONT try this,it is a very dangrous job.i doubt it is a ground problem,and NO on the gauge,leave that alone,just take it to a mechanic you trust and have him do the job,with a new sending unit it comes with a new float and fuel pump,sock filter.

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