Question about 2004 Ford Explorer
Filled up tank, drove away and gauge still read almost empty. 2 days later, driven 10 miles, and now reads 1/4 filled, when I know it is close to a full tank.
The most likely culprit is the sending unit in the tank. They are relatively easy to change, as long as you don't have much fuel in the tank. It's a mechanical unit that has a float that raises and lowers with the fuel level, however with age, the floats can develop leaks and no longer float, of the electronic portion of the unit can go bad and not register the proper level. They are replaced and an entire unit, so it doesn't matter which happened, you will need to change the fuel tank sending unit.
Posted on Jan 11, 2009
I had a very similar problem when the car was still under warranty. The dealer knew immediately the condition, so my guess is there may be a TSB on the problem. My EVAP cannister was bad and caused my guage to not read correctly; after filling, the guage would not move until I drove 20-40 miles, and then the guage would slowly show the tank was filling. The opposite would occur also; the guage would show the tank with more gas than what I actually had. After they replaced the cannister the guage worked great again.
Posted on Feb 12, 2009
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