Hopefully last post in this thread. after a couple weeks, the refusing to idle problem returned. Additionally, I was beginning to get fail to starts. The fail to starts really stumped me. Replaced fuel pump relay and fuel pump to no avail. finally one day it wouldn't start and I unhooked the IAC and it fired right up.
So the first time I cleaned the IAC, I just did the sloshing of carb cleaner thing through the ports. It kinda worked for a while. This time I disassembled it by bending the tabs open and actually cleaned the slip rings where the little contact brushes ride. The procedure is in the FAQ. Reassembled and voila, idles perfectly again and has started every time for two days.
I was going to sell this car but now I'm thinking of keeping it, I just saw post on FB from a guy who has a 88 turbo with over 400K on it!
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