1988 f150 stumped

Asked by Ushmansc Feb 21, 2016 at 06:30 PM about the 1988 Ford F-150 S Standard Cab LB

Question type: Maintenance & Repair

ok I have a 1988 f150 I've had it for about two
years and it's been doing the same thing only
works during the summer it cranks up and runs
fine but after about 20 minutes it will cut off and
he will here the pumps are muffled 20 minutes
later you will hear the pumps sound like they are
supposed to and then it will crank up as if nothing
ever happened runs fine on the interstate does it
mostly when I sitting idle for too long I have
replaced the bull fuel pump high pressure and low
pressure new fuel pressure regulator new
distributor new thermostat and thermostat sensor
I have also straight wired the high pressure pump
and hook it to a toggle switch today still no change
I'm thinking of doing the same thing to the low
pressure pump tomorrow but I have so much time
and money into the truck I figure why not see if
somebody knows something I'm not thinking of
any help is appreciated thanks

3 Answers
34,765

lrodri911 answered 8 years ago

First findout if in fact it's fuel related issue by checking fuel pressure. What size engine do u have

Mark helpful

Ushmansc answered 8 years ago

v8 302 fuel pressure is fine when its running but when it cuts off fuel pressure diminishes

Mark helpful
34,765

lrodri911 answered 8 years ago

How did u wire the main pump. There's a fuel relay and from there it goes to the enertia switch and then to the pumps. If one of those is not operating properly and u only direct wired one pump, the otherone will not work. I would go back to original wiring and check the relay and enertia switch first

Mark helpful

Your Answer:

Related Questions

  • 1988 f150 stumped 3 Answers

    ok I have a 1988 f150 I've had it for about two years and it's been doing the same thing only works during the summer it cranks up and runs fine but after about 20 minutes it will cut off and he w...

    1988 Ford F-150 S Standard Cab LB

    -

    Maintenance & Repair

  • Wiring on 1988 F150 1 Answer

    I have a 1988 F150 with a Winsor 351 that the rats have caused some damage. There are three wires in a wire loom to the coil. White with blue stripe to the positive coil terminal, green to the n...

    1988 Ford F-150 S Standard Cab 4WD LB

    -

    Maintenance & Repair

  • Fuse panel for 1988 ford f150 xlt 1 Answer

    I'm looking to replace my fuse panel in my 1988 Ford f150 xlt. Can a bronco be a possible interchangeable? If so what year?

    1988 Ford F-150 XLT Standard Cab 4WD LB

    -

    Maintenance & Repair

  • 1988 ford f150 timing 3 Answers

    I have a 1988 f150 slant 6 and it wont turn over I have replaced the starter and the engine coil it seems like its not getting fuel and when I spray starter fluid in it it starts but dies immediat...

    1988 Ford F-150 S Standard Cab LB

    -

    Maintenance & Repair

  • 1988 f150 not getting gas to motor 4 Answers

    I have a 88 f150 straight 6 it's not getting gas to the motor it ran fine then I parked it rained really hard that night the next day wouldn't start hasn't ran since I can spray starter fluid in i...

    1988 Ford F-150

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 13,535 nationwide F-150 listings starting at $3,888.

Postal Code:

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

  • #1
    OJ
    Reputation
    41,850
  • #2
    Gene Arnett
    Reputation
    15,990
  • #3
    Rowefast
    Reputation
    15,480
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
128 Great Deals out of 7,841 listings starting at $5,500
Used Ford F-250
6 listings
Used Ford Mustang
42 Great Deals out of 1,614 listings starting at $8,995
Used Ford Ranger
22 Great Deals out of 693 listings starting at $6,445
Used Toyota 4Runner
26 Great Deals out of 536 listings starting at $14,791

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.