1990 F150 won't run on own power

Asked by Survival Feb 23, 2020 at 11:47 PM about the 1990 Ford F-150

Question type: Maintenance & Repair

I have a 1990 f159 4.9L l600 bought it as a fixer upper was told
won't fire due to fuel. I've been testing everything if I pour gas in
the intake it turns right over and runs looking at the truck and
talking to the former owner and asking what he has and hasn't
done I jumped right into it replaced the fuel pumps (dual
reservoir), fuel filter, pump relay, injectors, and fuel pressure
regulator as my starting point well low and behold the truck still
doesn't run under its own power I've checked to ensure there are
no clogs pinches and the proper power is flowing to all wires and
proper pressure as well as ensured that the connectors to the
injectors are receiving a pulse ensured no messed up lines and
fixed the ones that were damaged I still can't get the darn thing
running any help would be much appreciated.

1 Answer


Do the injectors fire? Do you have fuel pressure? Perhaps the ECM is bad but I do not recommend random part replacement as it gets very expensive.

Your Answer:

Ford F-150 Experts

  • #1
  • #2
    G A Arne
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used GMC Sierra 1500
80 Great Deals out of 4,460 listings starting at $508
Used Ford F-250
3 listings
Used Ford Ranger
8 Great Deals out of 784 listings starting at $4,950
Used Ford Mustang
34 Great Deals out of 978 listings starting at $3,999
Used Ford Explorer
26 Great Deals out of 1,708 listings starting at $3,900

Used Cars for Sale

2021 Ford F-150 For Sale
248 listings starting at $45,765
2020 Ford F-150 For Sale
6 Great Deals out of 4,185 listings starting at $871
2019 Ford F-150 For Sale
16 Great Deals out of 459 listings starting at $28,900
2018 Ford F-150 For Sale
20 Great Deals out of 976 listings starting at $23,250
2017 Ford F-150 For Sale
10 Great Deals out of 385 listings starting at $15,900

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.