1989 Ford F-150 5.0 5 Speed Manual Stalling

Asked by CATMAN137 Oct 06, 2018 at 09:37 PM about the 1989 Ford F-150 XLT Extended Cab 4WD LB

Question type: Maintenance & Repair

So, my 89 Ford F150 I picked up for $500 is giving me a problem. When I
first start up I here my High Pressure Pump on the frame wind up and the
truck shows about 15-20 PSI on rail. After starting she runs for a while until
she gets hot. I've monitored the high pressure fuel pump and voltage is
always present. Once she had been running  a bit my pressure quickly
drops to 10 PSI, truck sputters then stalls. When trying to restart after stall I
can hear my High Pressure pump wind up but my PSI on the rail stays flat at
zero PSI. I think it's bad but I want to confirm. I would think if my sending unit
was bad It wouldn't stay running at all. Any opinions?

1 Answer

Cat Did you ever discover the problem? What I noticed on my truck is that the high pressure pump is actually srarving for fuel, indicating to me that the in-tank pump had quit pumping. Even if I change tanks during this stalling event the HP pump still starves. Turn the truck off and let it set for 5 minutes and it starts right back up. Run fine for 20- 30 minutes then stalls again.

Your Answer:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    26,340
  • #2
    F_O_R
    Reputation
    9,770
  • #3
    G A Arne
    Reputation
    9,730
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
86 Great Deals out of 9,771 listings starting at $2,995

Used Cars for Sale

2020 Ford F-150 For Sale
7,641 listings starting at $27,764
2019 Ford F-150 For Sale
7 Great Deals out of 1,575 listings starting at $24,900
2018 Ford F-150 For Sale
19 Great Deals out of 1,072 listings starting at $17,555
2017 Ford F-150 For Sale
30 Great Deals out of 870 listings starting at $18,450
2016 Ford F-150 For Sale
24 Great Deals out of 825 listings starting at $16,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.