I've got what appears to be an intermittent freezing of the evaporator in the 850. The air works fine for several days, then quits until the car is turned off for a period of time. I haven't got my gauges here to do a thorough check of the system, but it appears to have a full charge since the compressor is not cycling like a low charge condition. I did add twenty oz. of refrigerant along with a can of sealer when I first started it up a couple of weeks ago. Any suggestions would be appreciated.
Regards,
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