89 f150 5.0 fuel problems

Asked by Jul 26, 2016 at 11:07 PM about the 1989 Ford F-150 XLT Extended Cab LB

Question type: Maintenance & Repair

I bought a 89 f150 cheap from a dealership had no
problems for 6 months, then all of the sudden it broke
down on the highway I was pushing the gas and it was
slowing down when I pressed it. I've replaced the fuel
injectors, fuel filter, rear fuel tank, fuel pump, all relays, new
spark plugs and wires, timing chain and the motor still isn't
getting fuel. My diagnostic tester bit the dust recently and
can't figure it out. Don't really wanna buy a new tester,
could reall

6 Answers

15,980

If it is fuel injected, did you check the pressure with a gauge at the rail? If the pressure at the rail is low or non existent, check backward.

45

My husband's '91 turned out to be the "brain".

There's no pressure at all coming from the fuel pump, I might have to check the brain

15,980

You'll need electronic equipment to check the PCM. Check for power to the fuel pump with key on.

1 out of 1 people think this is helpful.
6,135

Ford have had numerous problems with their dual fuel tank switches so if you have dual tanks, check that out. Otherwise maybe the PCM but you'll need a code reader or scanner to check that. Good Luck, Kenny/MrBlueOval

15,980

If you are getting zero pressure from the pump, check and see if voltage is being supplied to it.

Your Answer

Add photo

Related Questions

  • 89 f150 fuel problems 1 answer

    I Got a 89 f150 supercab 5.0 with dual tanks, I've replaced the fuel injectors, wiring, spark plugs, ignition coil, relays and relay wiring. both fuel tanks and fuel pumps. Yet, my truck won't star...

    1989 Ford F-150 STD Extended Cab 4WD LB

    -

    Maintenance & Repair

  • 89 f150 fuel pump problems 3 answers

    I have a 89 ford f150 xlt lariat. Has a 5.0 302 v8 efi motor. The other day i was driving and my truck just died. Wouldn't start up again. I got home and turned the ignition to the "On" position ...

    1989 Ford F-150 XLT Standard Cab 4WD SB

    -

    Maintenance & Repair

  • 1989 F150 fuel problem 1 answer

    I replaced the clutch and slave cylinder by sliding back trans, ran great for 2 days. Started running warm and sluggish. Had it scanned came up as short in ground wire to fuel pump. Fixed only short i...

    1989 Ford F-150

    -

    Maintenance & Repair

  • 1989 F150 Fuel problems. 10 answers

    I have a 1989 Ford F150 with the 5.0 fuel injected. Its not getting gas and I don't know where the problem begins. I know its getting fuel up to the fuel pump by the driver's door. but not sure about ...

    1989 Ford F-150

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 205,088 nationwide F-150 listings starting at $1,779.

ZIP:

Search Ford F-150 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,640
#2 dandyoun
dandyoun
Reputation 4,120
#3 tennisshoes
tennisshoes
Reputation 2,470
View All

Related Models For Sale

Used GMC Sierra 1500
1,057 Great Deals out of 58,731 listings starting at $1,599
Used Ford F-250
586 listings starting at $1,357
Used Ford Mustang
582 Great Deals out of 41,215 listings starting at $1,699
Used Ford Ranger
228 Great Deals out of 7,053 listings starting at $1,200

Used Cars For Sale

2017 Ford F-150 For Sale
70,919 listings starting at $18,904
2016 Ford F-150 For Sale
223 Great Deals out of 64,669 listings starting at $8,843
2015 Ford F-150 For Sale
221 Great Deals out of 7,724 listings starting at $18,891
2014 Ford F-150 For Sale
529 Great Deals out of 11,288 listings starting at $11,988
2013 Ford F-150 For Sale
685 Great Deals out of 14,353 listings starting at $8,450