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Fuel pressure to high causing my 1988 f150 to die like its out of fuel

Switch tanks fuel bleads back into other tank

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  • Cars & Trucks Master
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You have a defective fuel tank switching, it is located under the truck on the drivers side.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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SOURCE: fuel gauge not working

yea fords with two tanks are known for getting stuck if you dont switch the tank constantly. you have to get to the valve that switches the two tanks, and free it up. it definitley isnt anything but the valve.

Posted on Apr 01, 2009

  • 24 Answers

SOURCE: '88 f150 will not start, 0 fuel pressure

I know the ford cars had a trip relay for the fuel pump. In the event of a wreck it shuts the fuel pump down and has to be reset manually. I am unsure if the pickups had the same thing.

Posted on Jul 11, 2009

  • 975 Answers

SOURCE: I have a 96 f150 with 2 fuel tanks the back fuel

Yes,Ford sells the fix,a check valve that just snaps on to the fuel line .

Posted on Nov 14, 2010

emissionwiz
  • 76691 Answers

SOURCE: Rear Fuel tank doesnt work so my 1990 ford f 150

Hello
Having worked for Ford for 25 years and having seen this very same problem (fuel flows between tank and overflows) many times there is only one cause of the fuel flooding the other tank, the fuel switching valve on the frame rail under the truck is detective, this valve contains special silicone rubber poppet valves that open when the front or wear tank fuel pump is selected, it then seals when the tanks electric pump is shut off at the selector switch, your poppet valves are leaking, all to a common problem. Back in 2000 when I retired this switching valve was no longer sold by Ford parts, it is obsolete. I suggest you check with Ford to see if it is available from some other source or call a local parts store like NAPA or Carquest and inquire is anyone in the aftermarket has them. The last choice is a used one, but of course it could have the same problem as yours as age and deterioration of the rubber valves is what makes them leak.

Posted on Oct 31, 2011

dkeven
  • 62 Answers

SOURCE: I have a 1994 Ford

common on older high mileage fors to either have the switch go out or the intank pump go bad, you cang ground terminal 6 on the underhood diag plug with key on engine off and switch from front to rear or vice versa and listen for fuel pumps to be running, likely one is not

Posted on Jul 02, 2012

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Could be a clogged fuel filter for tank 1 or could be the fuel pump for tank 1..

Hope this helps !!
rate me good ;o)

Jul 14, 2009 | 1988 Ford F 150

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'88 f150 will not start, 0 fuel pressure


I know the ford cars had a trip relay for the fuel pump. In the event of a wreck it shuts the fuel pump down and has to be reset manually. I am unsure if the pickups had the same thing.

Jul 11, 2009 | 1988 Ford F 150

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