1999 Chevy Blazer Idles Rough and Stalls

1999 CHEVROLET BLAZER
107,000 MILES • 6 CYL • 4WD • AUTOMATIC
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BURGGOLFER09
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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?
Aug 25, 2010 at 5:07 PM
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RASMATAZ
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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-
Aug 25, 2010 at 5:13 PM
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BURGGOLFER09
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No check engine light, and i just bought it a few months ago and haven't had a tune up
Aug 25, 2010 at 5:32 PM
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RASMATAZ
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Try giving it a tune-up and see what happens also follow-up on my suggestions
Aug 25, 2010 at 5:34 PM
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BURGGOLFER09
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what exactly does a tune up do and how much am i looking price wise
Aug 26, 2010 at 8:58 PM
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RASMATAZ
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Try cleaning out the idle air control valve and see what happens
Aug 26, 2010 at 9:08 PM
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MADMIKE1735
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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....
Aug 26, 2010 at 9:14 PM