Question... On my 88 F150 300-6cyl when idling in will idle up a little
then down and do this several times then it will stall..... any idea's? I
just changed the fuel pump and put new plugs and filters, changed
oil..etc... It has been doing this for a long time, before the tune up. Also
hesitates sometimes in slower traffic or slower driving conditions. Any
help would be great!
Should be EFI. Throttle control solenoid is most likely suspect for the rolling
idle. At the year of the truck, I am sure this is not the only problem. Start
diagnosis by running a fuel pressure check. Base timing needs to be checked/set.
In other words go over the basics.
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