well, it does this constantly, and in all weather conditions. I started noticing it when it was about 80 something up here in chicago, and now it just continues to do so. I only start it about once a week due to the fact that it's at my parents house, 45 minutes or so away, and awaiting my reconstruction of the fenders and hood.
As for the sensor on the intake, could someone give me a picture? My intake is well.... custom? My intake volume is certainly compromised, but not a whole lot, and not enough for white smoke to be coming out, so i'm assuming it's a different problem. Oh, and There is little antifreeze in the mixture, so I really need to fix it fast, or drain it and add more antifreeze (only a 10% mix at best currently). But yeah, a pic of that intake sensor would be great. Thanks!