Question about 2002 Ford F250 Super Duty SuperCab

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02 super duty with 7.3 fuel gauge will give false readings.

02 super duty with 7.3 fuel gauge will read about 1/2 tank then after about 30 seconds drop to empty and periodicly while driving it may be on full or half again. The fuel milage estimate still works on the overhead. Oddly when this started happening my outside temp. Started reading about 20 degrees lower than actual outside temp.

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COULD BE THE FUEL SENDER OR YOU HAVE A POOR GROUND POINT IN THE CABIN.
WEIRD AND MULIPLE MALFUNCTIONS ARE USALLY A POOR GROUND.

Posted on Nov 17, 2009

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Posted on Jan 02, 2017

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2007 Subaru WRX Fuel gauge does not work porperly. When the tank is topped off, the fuel gauge reads full, but after much driving the gauge only drops to 3/4 a tank and slowly to half of a tank on the...


hi it can really only be two things, first is the fuel sender on the pump inside the tank it could be stuffed or sticking causing a false reading, second it can also be a faulty fuel gauge on the dash.

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Hi.
3 options.
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1 Answer

1991 pontiac fire bird fuel gauge sudenly over full had 1/4 tank yesterday?


the fuel sending unit that is in the fuel pump went bad, therefore giving you false readings, the only way to fix it is replace the fuel pump.

Nov 30, 2010 | 1991 Pontiac Firebird

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Fuel gauge reading zero and light on ?


Ford has lots of problems with the sender reliability. Typically, the sender (and expensive fuel pump) replacement resolves the issue. To test, you need to take the connection off of the sending unit, at the tank, turn on ignition, and then ground and un ground it and view results at the gauge. If the gauge responds, the sender needs to be replaced.

There are aftermarket senders that cost less than OEM.

Sep 16, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

Gas gauge reads full most of the time some times reads true but always gos to full 99 F250 super duty


Check the harness connector at the fuel tank for a short to ground and test to see if the tank is properly grounded.

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96 blazer dies at during braking with less the 1/4 tank of fuel or will refuse to start while parked on a nose low incline


possible fuel pump and/or incorrect fuel reading...these senders in tank can give false reading to gauge.key on-engine off runs pump for 3 seconds...listen to the pump in a quiet place like a closed garage and alot of times these pumps sound odd when failing like a louder whining noise than normal. turning the key off for 5 secs will reset and run the pump once again when you turn key on but do not crank. fuel pump is fairly common failed item for this make and model.Replacing sender while servicing pump is reguarly done as well.

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