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Rough idle at cold start

(2002 Chevrolet Tahoe)
in Loudon, TN on April 13, 2009
123,000 miles. Engine idles rough at cold start unless I increase to 1500 rpm for 1-2 minutes, then fine. Replaced plugs, wires, filters, cleaned fuel system, yet problem persists. Any suggestions?
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Popular Answer
on April 19, 2009
Any trouble codes stored? Try some fuel injector cleaner. Check for vacuum leaks.
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