What do you think is the problem

Tiny
BDEPOLI
  • MEMBER
  • 1995 FORD F-150
  • 155 MILES
Usually upon reaching temperture the truck will shut off for aprox 1/2 to 3 seconds and then run normally. This has been going on for months. Lately along with the shutdowns it stops running completely. I have to pull over and try to restart which it has reatarted. The fan motor to a/c continues to run so its elect to fuel or fuel related. Also one in 30 starts it is hard to start.
I have changed fuel pmp, fuel filter, coil, ignition switch, ignition tumbler, elect control module, fuel positon module, changed relays, plugs rotor and plug wires with no positive results. I want to change the computer but don't know if that will help.
the truck is a 4.9l manual transmission
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Monday, October 3rd, 2011 AT 10:50 PM

1 Reply

Tiny
DAN_K
  • EXPERT
Are there any Diagnostic Trouble Codes (DTCs)? Because the no-start condition is so short in duration, this is going to be tricky to diagnose. I would begin by obtaining a good wiring diagram and checking all ground connections for corrosion/high resistance. It may be fuel related, but don't rule out spark. Check the ignition system circuit, also.
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Monday, October 3rd, 2011 AT 11:06 PM

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