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1990 Ford F-100 fuel problem

Tiny
SKYEWATCHER
  • MEMBER
  • 1990 FORD F-100
Engine Mechanical problem
1990 Ford F-100 6 cyl Four Wheel Drive Manual

fuel pump works fine, repaced relay switch, still wont start acts like it isn't getting fuel. Is there a fuel pump wiring diagram or regulator or pressor sensor help
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Saturday, February 6th, 2010 AT 12:44 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi skyewatcher, Welcome to 2carpros and TY for the donation

If you can hear the fuel pump come On.

Check the actual fuel pressure if its within specification, if okay check if the injectors are pulsing

Also you replaced the fuel pump relay this means the inertia fuel cut off switch is okay if its coming On.

4.9L

Below is the EWD-fusible link thru the fuel pump relay to inertia switch and then the fuel pump hru the brown wire-


https://www.2carpros.com/forum/automotive_pictures/12900_fp_23.jpg

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Saturday, February 6th, 2010 AT 1:06 PM

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