When its cold out engine doesn't want to stay.

Tiny
RUDEDAWG454
  • 2002 CHEVROLET SILVERADO
  • 110,000 MILES

When its cold out engine doesn't want to stay running, but as it warms up it runs better. Ran my code scanner and got a po430 and300 codes. Ive been told that I need to remove my intake manifold and have it machined . Does this sound right? It has a 5.3 vortec

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Wednesday, March 6th, 2013 AT 6:15 AM

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Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

430 is a cat failure code.

300 is a random miss fire

expensive guess on the intake.

I would start with basics. Check fuel pressure as a start.

Roy

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Wednesday, March 6th, 2013 AT 11:41 AM

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