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Hello All:
The evaporator on my '92 245 is icing up on highway drives. It seems that after about 40 minutes or so of 60mph driving, the air flow and cooling start to diminish.
If I set it from recirc to fresh and turn the AC off it will thaw gradually and you can feel the air start to flow more freely at the vents.
I had a leak in the high pressure line repaired this summer and had the system converted from the original R12 to 134a (R12 is no longer legal in Ontario).
Is evaporator freezing the result of an undercharge?
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Herb Goltz, London, Ontario, Canada '92 245 w/109K mi
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