Question about 1991 Ford F150

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1991 ford f150 dual tanks work fine but fuel gage doesn't work

Fuel gage doesn't work, tanks work fine

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  • 42 Answers

Probably sender unit bad conectins

Posted on Jan 22, 2013

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Posted on Jan 02, 2017

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SOURCE: How do I remmove secondary fuel tank which is leaking?

there should be two straps holding the tank in place,,,,if you remove them the tank should drop down to where you can disconnect the feeder hose and go from there

Posted on Feb 20, 2009

  • 145 Answers

SOURCE: 1987 ford f150 dual fuel tanks fuel qty gages

tank switch on dash could be bad, also selector valve could be bad. are the fuel gauges accurate front or rear. like you say the rear reads full, is it?? I would try the switch on the dash first.

Posted on Sep 17, 2009

1991fordf150
  • 59 Answers

SOURCE: are both fuel pumps the same type on my 1990 ford

yes they should be cuz it is the same truck

Posted on Jun 03, 2010

  • 1 Answer

SOURCE: Where is the fuel transfer valve on a dual tank 19...

From what I can find out Ford did not use a fuel transfer valve in 1992. They ran both pumps to a common fuel line and used one way check valves to keep one pump from filling the other tank while keeping the entire fuel system pressurized. Your tank selector switch is actually switching pumps off and on, not a transfer valve. The problem Ford had was the one way valves failing causing one of the tanks to overflow. They have an external one way valve kit to solve this problem, but the valves are about $85.00 each.

Posted on Sep 01, 2011

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1 Answer

Fuel gage not working


when i had my 91 ford, the front tank gauge woul not work, but the back one did. i discovered that the wire plug on top of the tank had deteriorated and losing connection. if you change that, it may help it start working again.

Jan 22, 2013 | 1991 Ford F150

1 Answer

How do i replace front fuel pump on a 1995 ford f150 5.0litre extended cab dual tanks how do i remove tank


May be easier to loosen rear box bolts,remove the
front bolts & tip up the bed, rather than lay on your back
& have to drop the tank & that way you don't have the
fuel removal issue,can stand there & just work on top
of tank

Oct 06, 2012 | Cars & Trucks

1 Answer

I have a 91 ford f-150 with a dual tank.. all at once the truck quit running so i switched to the rear tank where i have fuel flow .. ? is there more than one fuel pump


Yep,a pump in each tank,the switch just powers one or the other,have to replace the one pump,
don't forget to put in a new filter at that point also.

Sep 07, 2011 | 1991 Ford F150

1 Answer

I have a 1991 F150 with duel tanks and a V8 engine 4X4 when I'm on the front tank it runs great but when I switch to the rear tank and give it gas it wants to "bog" down. but at normal spped it...


You need to check fuel pressure at the intake manifold for each tank, and see if you have a failing fuel pump. (Each tank should have it's own pump)

Apr 26, 2011 | 1991 Ford F150

1 Answer

Where is the fuel transfer valve on a dual tank 1993 Ford F150 located?


From what I can find out Ford did not use a fuel transfer valve in 1992. They ran both pumps to a common fuel line and used one way check valves to keep one pump from filling the other tank while keeping the entire fuel system pressurized. Your tank selector switch is actually switching pumps off and on, not a transfer valve. The problem Ford had was the one way valves failing causing one of the tanks to overflow. They have an external one way valve kit to solve this problem, but the valves are about $85.00 each.

May 21, 2010 | 1991 Ford F150

1 Answer

1987 ford f150 dual fuel tanks fuel qty gages inop.fwd tank reads empty and when aft selected reads full.


tank switch on dash could be bad, also selector valve could be bad. are the fuel gauges accurate front or rear. like you say the rear reads full, is it?? I would try the switch on the dash first.

Sep 17, 2009 | 1987 Ford F 150

1 Answer

Fuel Guage Goes To Full


if you have pulled the sending unit wire from the sending unit the gage in the dash is bad .

Sep 04, 2009 | 1996 Ford F150 Regular Cab

1 Answer

I have a 1991 Ford F150 4 x 4 inline 6 4.6L. Dual


your truck is a 4.9L, make sure you have power to the front tank fuel pump. is the power to the pump is ok and you can hear the pump run for a second or two when you key the vehicle on... replace the fuel tank selector valve

Apr 17, 2009 | 1991 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

1 Answer

Fuel tank


Ok look for a desconected or not installed negative, wire in the work area you was working

Oct 20, 2008 | 1984 Ford F 150

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