Question about 1990 Ford Econoline

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1990 Ford Econoline-front tank

The front tank fillls from the rear tank while driving & overflows. Continues to pump from the rear tank even with the front tank selected. Will run out of gas when the rear tank goes empty even though the front tank is full.

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There is a recall for this call your local ford dealer for clarification.

Posted on May 28, 2009

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

Where is the fuel pump located on a 1990 ford econoline van


Inside the gas tank. you have to unbolt the two straps holding your tank in place, remove all hoses and wires. pull the tank out from under the van, unbolt the sending unit (normally by blots, or lockring) and pull entire sending unit out. the pump is attached to the sending unit.

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1987 f150 302 the truck runs only on front tank, but it pumps the tank into the rear tank then the rear tank overflows and you run out of fuel in the front, need a cheap quick fix to get through until the...


it sounds like the switching valve is no good and needs replacing.you can clamp off the fuel hose to the rear tank and just run off the front tank until you can get it repaired.

Apr 10, 2011 | 1990 Ford F150

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When the 1990 Ford van is switched to the front gas tank it will run for a few miles and then acts like it is out of gas. When I switch to the rear tank no problems.


When you switch tanks can you see what the correct amount of gas is in the that forward tank? Can you verify that the fuel-pump inside the forward tank is coming on? A common problem for fords are the selector switch units. But you want to make sure you narrow it down enough so you don't buy the wrong part. Let me know how it is going.

May 19, 2010 | 1990 Ford Econoline

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Ford F150 1990 truck - Gas was leaking from the front tank. Replaced the grommit and now it is pulling the gas from the rear tank to the front an overflowing out of the nozzle where the gas cap is.


You definately need to get the truck serviced soon. To just guess at it, the balance pump isnt shutting down. The guage may not connected or moving freely.

Jun 18, 2009 | 1990 Ford F150

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Gas leaking out where you fill the front tank


You probably have a defective fuel-tank selector valve. Its located on the left frame rail, halfway down. While the vehicle is running, tank"A" is pumping fuel to the engine, while tank "B" is getting the unneeded fuel that is returning from the engine. Thats why it is overflowing.

Jun 18, 2009 | 1990 Ford F150

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Front fuel tank not responding


based on my 20 years in a Ford dealer your problem is the front pump.

May 21, 2009 | 1989 Ford Econoline

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1990 ford f150 has dual tanks. gas pumps from rear tank to front


See these two threads for more info, I've heard of this happening before, in fact at one time there was a recall from Ford regarding this exact issue - http://www.fordf150.net/forums/viewtopic.php?p=227833 - http://www.fordf150.net/forums/viewtopic.php?p=46861

Feb 12, 2009 | 1990 Ford F150

1 Answer

1990 ford f150 cross over valve location


Please Help ME by Remembering to RATE ME Thank you Vrey Much !!!

This vehicle does not use an external fuel tank switching valve. A supply check valve in the fuel pump assembly opens when the outlet pressure from the energized fuel pump exceeds the opposing check valve spring force.


R E C A L L 1991
THE DUAL FUEL TANK SELECTOR VALVE MAY MALFUNCTION AND CAUSE AN OVERFILL CONDITION IN ONE OF THE FUEL TANKS, RESULTING IN AN OVERFLOW OF FUEL PAST THE FILLER CAP.
THE OVERFLOW OF FUEL PAST THE FILLER CAP CAUSES A FUEL LEAKAGE, WHICH CAN RESULT IN A FIRE WHEN EXPOSED TO A SOURCE OF IGNITION.
REPLACE THE DUAL FUEL TANK SELECTOR VALVE.
SYSTEM: FUEL TANK, AUXILIARY.
VANS AND LIGHT TRUCKS WITH DUAL FUEL TANKS PRODUCED IN THE FOLLOWING PERIODS: F150, F250, AND F350 LIGHT TRUCKS BUILT BETWEEN FEBRUARY 28, 1989 AND JULY, 1989; ECONOLINE BUILT BETWEEN FEBRUARY 28, 1989 AND FEBRUARY 11, 1991.
NOTE: FORD HAS AGREED TO RECALL THESE VEHICLES BUT PARTS ARE NOT YET AVAILABLE.PARTS WILL BE AVAILABLE IN DECEMBER 1991. YOU WILL RECEIVE A LETTER FROM FORD ADVISING YOU WHEN TO SCHEDULE AN APPOINTMENT WITH YOUR DEALER TO HAVE THE RECALL WORK PERFORMED. IN THE MEAN TIME, YOU CAN TAKE THE FOLLOWING PRECAUTIONS:FILL EACH TANK TO ONLY 1/3 FULL. IF YOUR VEHICLE LEAKS FUEL OR IF YOU SMELL FUEL, STOP USING THE VEHICLE AND CALL FORD AT (313) 446-4654 AND ADVISE THEM OF YOUR PROBLEM. REFER TO FORD SAFETY RECALL NUMBER 91S39. AN OPERATOR WILL TAKE YOUR NAME AND TELEPHONE NUMBER. A FORD REPRESENTATIVE WILL CALL YOU BACK

Jan 21, 2009 | 1990 Ford F150

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