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High idle

(1990 Chevrolet S10 Blazer)
in Fresno, CA on April 16, 2011
i have a 4.3 liter,high idle when it first starts then after it calms down it idles rough just wonder what options could cause this
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on April 16, 2011
Idle control valve, vacuum leak, air intake leak, Manifold Absolute Pressure (MAP) sensor...

Those are places I would begin looking...
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on April 17, 2011
ok thanks it gives me a starting point
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