[Brian]

My post from 7-25-2012 was pretty much my final resolution. Sorry, but I didn't pursue it any further, because my immediate issue was the bad pulley. I only followed up with other posts to let anyone else with issues know that I've still got an intermittent problem, but it's minor, or to respond to other posts. The A/C works great on very sunny hot days, when it's needed most. If it is overcast, and only hot in the car for me, then it's possible it doesn't always kick on everytime. Annoying, but so far it hasn't been enough of a problem for me to make a roject out of. It seems like the codes were bogus. I still think it's probably the sunload sensor, but I don't really know. No one ever cleared up the issue about which is the evaporative sensor or what its part number is. If you do work on this, please post what you find on this thread or one linked to it. I'm sorry I couldn't be more helpful.