Today I learned my AAV isn't working. I had already cleaned and tested the AAV and frozen the hole was large, hot (150˚F) it was closed.
I thought maybe my CSI was working intermittently as the connector was loose, cleaned up and tested the connection, tested that it fires when cold but I still had to give it gas to start it and then it was chugging until warm.
I decided to pull the AAV for the 4th time and bypass it completely. I decided I would simulate a manual AAV via a small set of vise grips. With the bypass installed and no vise grips she started right up but surged like crazy. I quickly I added the vise grip at around 1/2 tight and the idle smoothed right out. I turned it off and tried again with no additional gas and she fired right up... after a few minutes re-adjusted vise grips to fully closed and went for a 30 minute ride. She ran really well.
I'm glad I did that test and I suggest anyone with Cold Start or Hot Start issues - try bypassing the AAV to determine if it is in fact No Bueno.
Now all I need is to find a manual heater valve that fits the hoses, make a mount, route the cable into the cabin etc. Anyone have a part number for one they've used?