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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  • 1 POST
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
  • ✓ASE Certified Mechanic
  • 30,869 POSTS
  • ASE Certified Mechanic
Have you checked for codes yet?Also have you checked for vacuum leaks?
Jan 6, 2012 at 5:06 PM
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