Question about Ford F-150

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1991 F-150 windsor 351 will not start at times and dies while driving and will not restart. have done the following: Checked fuel pressure, it's at 40 PSI. Checked spark at ignition coil wire to distributor cap - checked okay Checked spark at the plugs - checked okay Checked fuses- checked okay Replaced: EGR valve position sensor Fuel pump Relay Solenoid TFI ignition module Fuel filter EEC relay switch Coil Plugs Wires Distributor Computer with a used one form junkyard Catalytic converter Inertia Fuel Shutoff Switch not tripped Have check engine tool hooked up to test codes but will not read the EEC-IV. Have removed SPOUT two prong connector coming out of distributor per ford technician suggestion. No change.

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If u have replaced the TFI ignition module then u need to replace the distributor pickup coil as well, if that has been done y ou may have a defective engine wiring harness, a defective ECM or a fuel pump that looses pressure hot, i would go with the distributor pickup coil, u must remove the distributor to replace it, the part is dirt cheap. Get the OEM part, the aftermarket parts are junk. My experience? 35 years as a Ford dealer electronic engine control master technician.

Posted on May 26, 2010

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  • yadayada
    yadayada May 26, 2010

    here is a picture of the part u need to replace.

  • dcxone May 30, 2010

    I had changed the distributor pickup coil, I cannot read the codes so am thinking maybe the ECM. Any way to check the fuel pump hot for proper operation or is it easier just to R&R?

  • yadayada
    yadayada May 30, 2010

    when it stops running get a can of spray starter fluid from a parts store, spray it into the air intake of the engine, if it starts you have a defective fuel pump, also this year of truck has a problem with the ignition starter switch coming apart and causes the ignition system and fuel pump to shut off, it is located near the bottom of the steering column and operated by a rod from the ignition lock cylinder, i was a Ford dealer tech for years and changed 100's of these switches. see picture below.

    MOTORCRAFT Part # SW2472 Price $18.00



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