Quote:
Originally Posted by GUM85
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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You could have logged the "gunk" in where the piston screw is causing it to not work properly anymore.
If any of you guys have suffered the vlv drop issue I have lots of good used OEM piston and rod assemblies if you need any, just PM me.