Results 1 to 4 of 4
  1. #1
    Junior Member
    Join Date
    Sep 2018
    Name
    Nathan Swayde Whaley
    Location
    Roopville
    Posts
    2

    302 Shutting off issue

    I was gifted a 1986 F150 for my birthday a few months back, itís a 5.0 EFI with 68K (or 168K I donít know for sure) on it. Iím having a real bothersome issue of this thing shutting off after a few minutes of operation, wether it be idling or driving it will lose power and die.

    Itís progressively gotten worse, before it would happen once every few days now it happens multiple times a day to where I canít even drive it. Itís happening so fast now the temp gauge isnít reaching operating temp before the engine shuts off and Iím stuck waiting to start it back up.

    It if helps at all the Emissions light comes on as it dies, but it doesnít come on any other time during operation. This thing is much older than me so Iím not too sure what to look for since thereís not much of an OBD system is any at all. Any help is greatly appreciated.


    Sent from my iPhone using Tapatalk

  2. #2
    Member Moosee1955's Avatar
    Join Date
    Aug 2018
    Name
    stevelandau
    Location
    Daly City
    Posts
    89
    Welll 3 things you'll want to do is #1, do a fuel pressure test, your fuel pump might be going out, #2 run a diagnostic codes check with a scanner. And #3 when the truck dies pull one of the spark plug wires and check for spark right as soon as it dies. An extra sparkplug grounded against the block will do or better still a spark tester, available any tool or parts store. Report your findings. An easy way to know if it's fuel vs spark is remove the air horn that goes to throttle body, open throttle, spray a 2-3 second spray of starter fluid or carb cleaner. If it fires then dies you know it's fuel related.

    Sent from my N9131 using Tapatalk

  3. #3
    Junior Member
    Join Date
    Sep 2018
    Name
    Nathan Swayde Whaley
    Location
    Roopville
    Posts
    2
    How do I run a diagnostic code check on this truck? Iím not sure how to work anything pre-OBDII


    Sent from my iPhone using Tapatalk

  4. #4
    Member Moosee1955's Avatar
    Join Date
    Aug 2018
    Name
    stevelandau
    Location
    Daly City
    Posts
    89
    The plugs are up near battery, at least they were on my Lincoln's, and Mustangs. You use a Eec4 code checker. If you don't want to mess with it, have a shop or parts store run your codes for you.

    Sent from my N9131 using Tapatalk

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •