1998 Mercury Mystique Engine is idling very high

Tiny
MERCURYM
  • MEMBER
  • 1998 MERCURY MYSTIQUE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 110,500 MILES
My check engine light was on. The engine detector said that my EGR valve needed to be changed. My friend changed the EGR valve, and now my engine idles really high. What should I do? What other problems are usually related to high idling?
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Tuesday, September 9th, 2008 AT 4:27 PM

2 Replies

Tiny
RASMATAZ
  • MEMBER
Make sure the EGR valve passages are clean of carbon that could be preventing the valve to fully close causing it to idle high and computer seeing a lean condition throwing fuel at it when not needed.
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Tuesday, September 9th, 2008 AT 4:44 PM
Tiny
MERCURYM
  • MEMBER
Thank you so much. I don't know much about cars, but I work with 5 mechanics that do. So I will relay the information to them, and give another reply when I do.
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Wednesday, September 10th, 2008 AT 3:44 PM

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