Question about 2000 Chevrolet Tahoe

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2003 Tahoe is running rough when at an idle almost to the point that it wants to shut down. When running, runs good. Could someone give me an idea of what could be the problem??? or Has any body exprenced this problem?

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Ok lok for any vaccuum leaks. also check pcv hose for any cracks

Posted on May 23, 2011

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More than likely it is you IAC that needs cleaning or is bad. this regulates the idle of car. ( idle air control ). Intermittent stalling almost always indicates a dirty or clogged IAC.

Posted on May 23, 2011

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Sounds like you might have a weak fuel pump.Check your fuel pressure first it should be 48-55 psi if its not within specs replace pump.

Posted on May 23, 2011

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here is a diagram of the map sensor #5.

2009-10-07_190044_3.gif

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