truck strarts find when it is cold drive it for 20min

90,000 MILES
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FENTON
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Let it sit for 20. it will whirl and whirl before starting change fuel pump fuel filter filler pipe spark plugs wires could it be a map sensor?
Feb 21, 2012 at 6:09 AM
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FIXITMR
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what does whirl mean? have you tried holding pedal down to start when it does this?
Feb 21, 2012 at 8:58 AM
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FENTON
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yes i did hold pedal down it will strart then and will start every time until i drive it for 20 to 30 min .stop it and try it it will start but if i leave it for
30 min or so it takes too or three time to start with pedal down
Feb 21, 2012 at 9:52 AM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
what motor is it?
Feb 21, 2012 at 1:58 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
i would suspect ECT as it controls mixture on starts.
Feb 21, 2012 at 2:00 PM
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FENTON
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it is a 4.3.v6 it just seams it is not getting enough fuel when it get warm and sets for awhile
Feb 21, 2012 at 2:20 PM
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