Ya it was a 90F kinda day, but at idle, rear seat passengers are asking if this Jeep has any A/C !! So literally at stop lights or not moving equals, in neutral rev it to 1500 rpm to keep cool. Question on your KJ does it seem to be PP at idle? Or am I in need of a recharge? The other problem is the heat rising up from jeep stuck in traffic, holy moly.. I am not surprised the vent temp climbed so quickly, after shutting off the a/c as a test. I should head over to Dr AC-& grab the FSM A/C tech specs, and have the Jeep AC gauges read for high & low side I suppose.