Quote:
Originally Posted by lsmalley
Save yourself the trouble and just use r152a. I'm coming up on my second summer with it and I'm still getting 20°F sometime less at the vents.
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You have a control problem or you're full of it. The A/C system has a control in it to prevent the coil from freezing. Older cars were a fluid filled probe with a set of mechanical contacts, newer cars used a thermistor poked in the plenum next to the coil to shut the compressor off when the coil reached ~38˚F. Letting the coil freeze lets all the condensation it's pulling out of the air freeze to it, forming a massive block of ice. Then your cooling stops and you defeated the purpose of having A/C.