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1999 Chevy Blazer Idles Rough and Stalls

Tiny
BURGGOLFER09
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 107,000 MILES
Lately it doesn't want to start unless I give it some gas when I'm turning the key. Even then once it gets started it doesnt want to idle and the rpm's bounce all over. Sometimes when im driving and come to a stoplight and sit for more than a few seconds it will stall. Any ideas?
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Wednesday, August 25th, 2010 AT 5:07 PM

6 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi burggolfer09, Welcome to 2carpros and TY for the donation

Do you have a check engine light and when was the last tune-up?

Try cleaning out the idle air control valve and EGR valve and test the throttle position sensor-
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Wednesday, August 25th, 2010 AT 5:13 PM
Tiny
BURGGOLFER09
  • MEMBER
  • 3 POSTS
No check engine light, and I just bought it a few months ago and haven't had a tune up
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Wednesday, August 25th, 2010 AT 5:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try giving it a tune-up and see what happens also follow-up on my suggestions
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Wednesday, August 25th, 2010 AT 5:34 PM
Tiny
BURGGOLFER09
  • MEMBER
  • 3 POSTS
What exactly does a tune up do and how much am I looking price wise
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Thursday, August 26th, 2010 AT 8:58 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try cleaning out the idle air control valve and see what happens
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Thursday, August 26th, 2010 AT 9:08 PM
Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
Everyone is right on the button. However I have seen an egr valve get stuck with carbon, give the same symptoms, and not throw a light. An egr valve is around $200. But easy to replace. If u replace it, buy the upgraded gasket which has a metal screen to prevent carbon from clogging the solenoid in the new egr.
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Thursday, August 26th, 2010 AT 9:14 PM

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