2008 4.6L Eddie Bauer Fuel Tank Capacity issues - Ford Explorer Forum - Forums for Ford Explorer Enthusiasts
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Old 01-04-2018, 04:38 PM   #1
dondoe0
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2008 4.6L Eddie Bauer Fuel Tank Capacity issues

Hello, just got a " new to me" explorer...everything I research states I should have a 22 gallon tank. The computer will tell me it will be empty in 50 miles, I'll fill it up and it only takes about 10 gallons...it won't take any more I'm sure of it...lol..The gauge will show about 3/4 to 7/8 full....I get about 150 miles out of it...then time to refill....is my computer out of calibration? Anyone have any ideas?

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Old 01-04-2018, 10:23 PM   #2
J_C
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Seems like your problem is the fuel level sensor not reading accurately. It's part of the "fuel sender" in the tank.

It looks like if you have the stock Motorcraft sender, that you can replace that separately. It's $76 at Rock Auto:
http://www.rockauto.com/en/moreinfo....831&cc=1441671

However, at a later date if your pump or pressure regulator fails, you'll end up buying another one with the whole sending unit, and at 10 years old already, and going to the trouble to drop the tank anyway, I would just get the whole sending unit with a new pump, pressure regulator, and fuel level sensor at once.

The whole assembly in a motorcraft part is ridiculously expensive at $272 but there are other aftermarket sender assemblies more reasonably priced like Delphi or Airtex. I couldn't tell you about the brands priced cheaper than those:

http://www.rockauto.com/en/catalog/f...assembly,10147
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Old 01-05-2018, 04:53 AM   #3
dondoe0
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Thanks J_C, that is a lot of good info, I appreciate the fast response, and the the time you took! So what is the more sane assumption:
1. When my tank is "empty" I really still have 10 gallons?
2. Something is actually preventing me from filling it all the way?
I'm sure it's number 1, but you know what they say about assuming...lol....thanks again!
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Old 01-05-2018, 01:41 PM   #4
J_C
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If the fuel level sensor is bad you can't assume any particular level, it could change. You need to watch your trip odometer to make a best guess how much fuel you have left and refill based on that.
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