Focus Fanatics - View Single Post - Symptoms of a valve seat about to drop?
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Old 02-12-2013, 08:05 AM   #22
GUM85
Focus Jr. Enthusiast
 
Join Date: Jan 2013
Fan#: 109288
Location: Springfield, MO
What I Drive: 2006 Pitch Black ZX4 ST

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I guess you can test it electrically but not mechanically. Autozone's web site says to test the IAC on 2000-2005 focus disconnect the two pin electrical connector, using a digital multimeter do a resistance test at the two pins on the IAC valve electrical connector and you should get a reading between 6-15 ohms if the reading is out of that range replace the valve. I did this test on the IAC valve on my car and got a 0 ohms reading. If I did it correctly than my IAC valve is no good. I just don't understand why it would run worse after I took it off and cleaned it.
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