I have a 1989 F/150 302, I am not getting power to the High Pressure fuel pump, I am not sure about the low pressure pumps power, I just replaced the saddle in-tank pump to no avail, I did remove the high pressure pump amd confirmed that it was working with 12 volt battery, I am not sure where to go from here, the truck has set for years and was given to me, I really want to get it runnung, does anyone have the quick fix? Thanks

Asked by Jun 25, 2007 at 11:30 AM about the 1989 Ford F-150

Question type: Maintenance & Repair

I have a 1989 F/150 302, I am not getting power to the High Pressure fuel pump, I am not sure about the low pressure pumps power, I just replaced the saddle in-tank pump to no avail, I did remove the high pressure pump amd confirmed that it was working with 12 volt battery, I am not sure where to go from here, the truck has set for years and was given to me, I really want to get it runnung, does anyone have the quick fix? Thanks

8 Answers

32,865

Did you check the fuel pump regulator?

3 of 4 people found this helpful.
10

there could be more that 1 cause for no power to high preasure pump 1. it could be a relay problem 2. there ids an inline fuseable link not sure wich one it is youll have to do some research

1 of 1 people found this helpful.
30

also check your fuel pump relay

2 of 2 people found this helpful.
10

hotwire, fuse, toggle switch. qwik and easy, not correct or maybe even up too others "standards" but i've done it a million times, pressure is regulated on the fuel rail, so assuming you dont forget to shut it off , it wont hurt anything.

1 of 1 people found this helpful.
35

If your battery runs below 12v it cuts out the fuel pump relay and the pump won't run. Check the battery voltage and if below 12.5 volts charge the batterey

1 of 1 people found this helpful.
365

hotwire is bad bad bad only crackheads do stuped stuff like that. in the pasenger kick pannel there is a enersha switch that sometimes trigers. check oweners manual for exact location but try that then go from there, fuses under hood and in cab.then start chasing the circuit

1 of 1 people found this helpful.
20,500

Sat for years! I guess you drained any remants of what was formerly gasoline from the tank and inserted something a little fresher. Varnish and gum in the fuel system has to be present.

1 of 1 people found this helpful.

I have a 89 it did the same thing so I ran my own wires nd I dnt have any trouble with it just dnt forget to turn it off

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