High idle on Mercury Grand Marq. I replaced idle air contronl valve. What is my problem?

2000 MERCURY MARQUIS
11,600 MILES
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ROCKYV
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igh idle on Mercury Grand Marq. I replaced idle air contronl valve. What is my problem?
Jan 6, 2012 at 4:20 PM
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SATURNTECH9
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Have you checked for codes yet?Also have you checked for vacuum leaks?
Jan 6, 2012 at 5:06 PM