Micheal,
It is easy to remove and test the AAR part#36 (not AAV). Unplug the wire, loosen the two screws holding the the two hoses and remove the two bolts holding down the AAR. This takes 5minutes to do (I did it yesterday night).
Once out look though. It should be partially open. I don't know the specs for it (ie: how much it should be open for a given ambient temperature). Put it in the freezer for 30 min and it should go fully open. Then apply 12v to it and it should close. Mine takes almost 20minutes at 12v to close, and never really closes. I removed it because I have no high idle when cold, and suspected the AAR. I actually drilled out the rivets and had a look inside. I adjusted it so it was more open than before, but I may have gone too far as my idle is now 2500rpm cold. I have to take it out again....
I also drilled a hole in the exhaust and welded a bolt. Then bolted on an O2 sensor. I just use a volt meter to monitor the mixture.
Tony
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