Only with ac on, idle holds at 1300 rpm for a few seconds when I come to a stop light before returning to 850 rpm. This is on a 99 firebird LS1 6 speed manual transmission. With ac off, I can shift to neutral at let's say 55 mph and rpm will drop smoothly from 2000 down to 850 like it should and be fine when I come to a stop. With ac on, clutch pedal pressed or in neutral, any thing above 30 mph, the rpm will drop from 2000 down to 1300 and hang until I come to a complete stop. It will continue to hang at 1300 for about 5 seconds and then drop to 850 or sometimes stall out. I can't post my tune at the moment as I don't have my laptop at work. Any suggestions on setting to look into adjusting would be awesome. Thanks.
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