Question about 2000 Ford Focus

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Feul guage stays at full

My fuel guage worked and then i filled it up. Then a week later after i had used some fuel it went back to full and has been there every since. My fuel pump also went bad, and i have replaced that and i still dont have the fuel guage working.

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  • Anonymous Mar 20, 2014

    stays on full since new fuel filter was installed

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FUEL SENDING UNIT MAY BE BAD/SHORTED

Posted on Dec 30, 2008

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Posted on Jan 02, 2017

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I have been having this same problem since about 6 months into owning the car... I have had it back to the dealership around 5 times including having the fuel guage replaced which fixed the problem for only a few months until it went back to this half full situation... I believe the tank is actually full and wonder what would happen if I just ran it past the empty warning... would the car stop? I just had it back at the dealer and they said they reset the equipment and on the way home I filled the tank and guess what? yes half full! so it is booked in again for next week... I agree it is annoying not to mention the having to fill the tank twice as often... would love to know if you had a resolution...

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Fuel guage was erratic then went past full mechanic installed a new pump and sending unit now it stayed at 1/4 tank and when I filled it itwent below empty. bad sending unit or bad guage or bad mechanic?


Test the gauge by using a test light ,and grounding the test light clip to a good known ground,then touch the pink wire on the connector harness going to the tank,with the connector unplugged,and key on,the gauge will move slowly to the empty mark,and lower ,then remove the test light and it will go past full,if it does this,it is a good gauge,and the sending unit,was put in wrong,or the part was bad.

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dear friend: i think that your terracan is actually running out of fuel even if the guage shows quater,you can also put the old fuel filter back and try it,we did discover some of the new filters sucking air.

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Fuel guage stays on full


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Cannot freely pump gas into my 2000 ford taurus


The gas guage is a seprate problem, the gas fill hose may have a sharp ben in the hose or kink, the gas pump hase a shut off valve that shuts off the pump if gas does not flow freely ie:blockage or full tank, I would visualy inspect the filler hose from the gas cap to the tank for again sharp bends or kinks, if the filler hose is in anyway restricked the pump may asume the tank is full.
the gas guage: is usualy a simple flot on a rod in the tank (like a toilet tank has) instead of opening or closing a valve it operates a "potentiometer" veriable position sensor (kind of like a dimmer switch).
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divided the mileage by half. I fill up the tank all the way the reset the trip odometer to zero, when I reach the half mileage of the tank I fill up again and repeat

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