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 Lariat 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:

CarGurus Experts

  • #1
    OJ
    Reputation
    41,770
  • #2
    Gene Arnett
    Reputation
    15,990
  • #3
    Rowefast
    Reputation
    15,420
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
182 Great Deals out of 9,044 listings starting at $1,000
Used Ford F-250
6 listings
Used Ford Mustang
61 Great Deals out of 1,603 listings starting at $6,500
Used Ford Ranger
20 Great Deals out of 521 listings starting at $5,400

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.