Question about 1986 Ford F 250

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1987 f 250 dual tank efi dies after warm up

Fuel rlay fixed 2x mechanic says it is fuel pump

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  • philojester Jan 19, 2009

    Thank you, sir. I will get the fuel pump replaced.

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It is the Fuel Pump. This is a Common Symptom of Early Pump Failure.

Posted on Jan 19, 2009

  • Travis Humphries
    Travis Humphries Jan 19, 2009

    No Problem!!!! Happy to Help!!!!

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When I start my truck I have to keep rapidly pumping accelerator to keep it running. If I stop pumping accelerator or put in gear it dies. how do I fix?


if it is a carby, the problem is the carby
if it is EFI pumping is useless so have the codes read to define the fault area

Oct 04, 2016 | 1990 Ford F250

1 Answer

Is the fuel pump electric on1988 Isuzu p up


ok no engine stated. cant help much if you can show VIN or engine name.
we can't guess the following
  1. engine
  2. if carb or EFI (1988 in usa they had carbs and EFI in 1 year)
  3. country, sorry, no country no joy, as varies by that.
why not just look, lets do this simple task.
  1. look at engine, its a carb or just throttle body, ?
  2. is the fuel lines to injector (s) and follow it to tank) it arrives at a filter, go past filter to tank and see a fuel pump rack in tank and 2 wires to rack and 2 to the fuel level sender, so 4 wires total that is EFI there. and is Electric pumps on all gas engines.
  3. if carb, it can be electric or mechanical off cam. drive. same deal see that fuel line it goes to 1 or the other, if electric it has 2 wires, not its pure mechanical.
on older cars there are 2 EFI fuel lines, a loop its called.
1 is like 30psi feed line an the other is just return. 0psi.
1 example of just 2 1988 engines.
he D1 is carb (dang carbs., LOL)
the E1 is EFI.


25645526-mcbfcqpm5wl32gh43fusyhok-5-0.jpg

Apr 13, 2015 | Isuzu Cars & Trucks

1 Answer

I've been told the fuel tank selector switch (in the cab) is bad on my 79 Ford E150 van. I have a new 2-pole switch, but since nothing is labeled I have no idea where to attach the wires from the old to...


yes these dash switches have allways been a problem the best way is to replace it with correct one from autoparts store but i usually replace tank selector valve at same time (there both about due) shield your eyes when dealing with this device as gas sprays out when removing it
a note : observe fuel level while driving on both switch posisitions the faulty one will indicate No fuel level when you know you got gas in both tanks

Oct 28, 2013 | Ford E-150 Cars & Trucks

2 Answers

I have a 1989 ford f 250 302 efi im having a fuelissue i have found what i thought to be a fuelpump it comes on and everything with the key it is on the fuel rail toward the front of the truck but everyone...


Up until 1989, EFI fuel systems in the F250 actually used two fuel pumps; a low-pressure pump in the tank and a high-pressure pump mounted on the frame.seddy29732_7.jpgHigh Pressure Pump


The part on the fuel rail you are referring to is most likely the fuel pressure regulator, which, if bad can also cause fuel delivery problems. From 1990 and up, the two pump system was replaced with a single, in-tank pump.seddy29732_9.jpgHope this info helps you out!

Jun 03, 2011 | 1989 Ford F 250

1 Answer

Where is the fuel pump rlay located on a GMC 95 safari van


Most car manufactures now put the gas pump in the gas tank. The gas cools the pump. But don't take the gas tank off, if you need a gas pump, one can be installed just like the old pumps, just disconnect the old pump and put a new one on.

Sep 10, 2010 | 1995 GMC Safari

1 Answer

90 corolla efi problem?


Classic fuel pump failure, Efi fuse runs the fuel pump now its open and it won't start. With it cranking and not starting add a little fuel to the air inlet and if it (flashes off ) ( runs a few seconds ) there's no fuel and the fuel pump is the most common cause. The pump is in the tank and unles s you feel that you as good as any pro mechanic and have the experience then let a pro do the work as the danger is high even for a pro.

Aug 19, 2009 | 2004 Toyota Corolla

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

2 fuel pumps on 84 z28????!!!?


My guess is if you changed to an older style sending unit, you could eliminate that electric pump & just use your mechanical one as they did before EFI.

Apr 16, 2009 | 1984 Chevrolet Camaro

1 Answer

My 1987 f250 efi straight 6 4 spd starts and then dies 90,000mi


Some years of the "F" series pickups had two fuel pumps,, one High Pressure and One Low Pressure.
It could be either one.

Jan 19, 2009 | 1986 Ford F 250

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