Question about 1990 Ford F150

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Are both fuel pumps the same type on my 1990 ford f150?I have recently purchased a 1990 ford F150 4wd with dual fuel tanks, the main tank doesn't seem to pump properly (will start and idle but cuts out when trying to drive ie. not enough fuel flow).

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Yes they should be cuz it is the same truck

Posted on Jun 03, 2010

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I have a 4.9L with dual tanks run off rear tank but will not run off front tank


Well, each tank has an assist pump insidfe it to supply the main hi-pressure pump on the left frame rail(usually) of your truck.Probably the assist pump in the tank that6 doesn't work has gone bad or started pulling air. don-ohio

Oct 12, 2011 | 1990 Ford F150

1 Answer

I have a 1990 f150 4x4 with dual tanks. when did ford stop having the high pressure rail fuel pump. I was told 1992 but the parts store told me they show only intank furl pumps for my truck. What is...


I have the same truck as you. Mine has the pumps inside the tank also. If both tanks stopped working at the same time, you might want to check your tank selector switch. I've had 2 of them go bad in the 6 years yhat i've had this truck.

Mar 29, 2010 | 1990 Ford F150

2 Answers

Back fuel pump is running all the time and is pumping fuel into front tank on a 1990 ford f150


I would drop the tank and replace the pump. These types of problems are fire hazard.

Oct 26, 2009 | 1990 Ford F150

2 Answers

I have a 1990 Ford F-150 won't start .


if it has dual tanks it might have a bad tank selector switch

Aug 23, 2009 | 1990 Ford F150

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I have a 1990 f250 that i suspect has a bad fuel pump. It has duel tanks. Is there a main fuel pump that can fail?


usually yes there is one main fuel pump. usually located on the drivers side of the engine block down low. Or on the frame rail in that general vicinity depending on what engine you have.

Aug 21, 2009 | 1990 Ford F150

1 Answer

Dual tanks on 1990 Ford F150


It should not cause no problems but instead of removing the tank leave it in the truck take out all the fuel in the tank and jus discontinue use of it. This will save you alot of time and trouble and i also suggest that if anyone besides you drives this vehicle then i would put a locking gas cap on it so it cant be accessed at anytime except by you.

Jun 23, 2009 | 1990 Ford F150

1 Answer

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

Feb 20, 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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