Beav suggested I clean both the throttle body and the IAC to rule out for my car's intermittent poor engine performance. I did it. It's not too hard. Take off black rubber air tube from air filter to throttle body, remove several hoses (emissions, vacuum and small coolant lines to throttle body. Remove six bolts (tops facing rear of car, 12 mm?) holding TB to "intake manifold". The IAC is bolted (adjusted also!) on to TB. I don't know how to adjust - I just cleaned the TB and IAC with carb cleaner.
Hope this helps a little, Jim
