Where is the location of the 2nd fuel pump relay.

Tiny
OOSEVEN
  • 1992 FORD F-150
  • 247,626 MILES

I'm in dyer need here. I have a 1992 f150 300 straight 6. It would not start one day and ever sense.
Starter turns. Put new fuel pump in, new computer, ignition switch. Transfer switch is good (dual tanks).

When we jump the transfer switch with a wire and crank it over it will start. But as soon as you let up on the key so it is running position, it dies. The relay under the hood in the fuse box is good. The switch on the passenger side that flips off in case of an accident is good. I believe there is two relay switches for fuel pumps. One in the fuse box. And the one I can not find.

So the question at hand is where is the 2nd one. Looked under the dash driver side. Can't find it. I heard it maybe above the radio. Does anybody know where to look to find it if there is a 2nd one.

Thank You.

ooseven

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Sunday, October 23rd, 2011 AT 2:27 PM

9 Replies

Tiny
OOSEVEN
  • MEMBER

If this helps out the vin# is:
1FTEF14Y8NPBO9296.

Thank You

ooseven

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Sunday, October 23rd, 2011 AT 2:38 PM
Tiny
RASMATAZ
  • MEMBER

All you got is one fuel pump relay in engine bay fuse block

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Wednesday, October 26th, 2011 AT 6:33 AM
Tiny
OOSEVEN
  • MEMBER

Hello and thank you for the info.

OK here is the thing. I have replaced the computer, PCM, ignition switch, fuel pump. We do not have power between the relay and the kill switch. The wire to the pumps are good.

Do have any idea what I need to do tp fix this problem?

If this helps out the vin# is:
1FTEF14Y8NPBO9296

Thank You.

Ooseven

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Wednesday, October 26th, 2011 AT 8:28 PM
Tiny
OOSEVEN
  • MEMBER

It may be the switch in back above the rear axle. It clicks when the key is turned on, but will no in gage the pump. So there is power all the way to that point and the next stage is the fuel pump.

I will let you know as I will be changing that soon.

Ooseven

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Tuesday, November 1st, 2011 AT 2:52 PM
Tiny
JESUSCAN2
  • MEMBER

Did you ever find out what was wrong.
Mine is doing the exact same thing
I need this fixed

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Thursday, September 25th, 2014 AT 9:50 PM
Tiny
OOSEVEN
  • MEMBER

After replacing the ignition again it worked. The first new one was bad grrrrrr

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Tuesday, January 6th, 2015 AT 8:38 AM
Tiny
2CARPROS KEN
  • ADMIN
  • 10,289 POSTS

Glad you got it fixed, new defective parts are very frustrating I hear ya.

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Tuesday, January 6th, 2015 AT 9:52 AM
Tiny
RHYTHMG22
  • MEMBER

IM having the same problem and I relpaced the fuel pumps im geting power to them I can jump the pumps and they will turn on I cam also jump them from taking out the relay and hooking a wire up in two little spots and they will turn on I just dont what wrong I also repaced the relay

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Wednesday, May 24th, 2017 AT 2:15 PM
Tiny
2CARPROS KEN
  • ADMIN
  • 10,289 POSTS

Hello,

There is a fuel switching valve that sits between the tanks that goes bad not allowing the fuel to get to the fuel rail. This is a common problem with these trucks.

Please let us know what happens.

Cheers, Ken

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Friday, May 26th, 2017 AT 4:04 PM

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