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

Tiny
FENTON
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 90,000 MILES
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?
Tuesday, February 21st, 2012 AT 2:09 PM

5 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
What does whirl mean? Have you tried holding pedal down to start when it does this?
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Tuesday, February 21st, 2012 AT 4:58 PM
Tiny
FENTON
  • MEMBER
  • 3 POSTS
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
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Tuesday, February 21st, 2012 AT 5:52 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
What motor is it?
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Tuesday, February 21st, 2012 AT 9:58 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
I would suspect ECT as it controls mixture on starts.
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Tuesday, February 21st, 2012 AT 10:00 PM
Tiny
FENTON
  • MEMBER
  • 3 POSTS
It is a 4.3.V6 it just seams it is not getting enough fuel when it get warm and sets for awhile
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Tuesday, February 21st, 2012 AT 10:20 PM

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