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Old 08-07-2013, 08:04 AM
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funola funola is offline
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Join Date: May 2005
Location: NYC
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Quote:
Originally Posted by seebeexee View Post
Thanks for the input.

On the 25-mile trip in to work this morning, with outside temperatures at 82*F, the vent temperatures got down to 42*F at one point on the freeway, but were mostly around 46*F at freeway speeds. As soon as I got on to city streets, however, the temperatures rose to the mid 50s, and just below 60*F when stopped at a light.
........

One thing you didn't mention is did you clean your evaporator? I added some 134a to my 85 R4 300 D and got down to 45 deg F at an ambient of 95 F (at idle). I think mine will go lower still with more tweaking. R12 system on yours should do better than that.

An easy way to check the mono valve is the hoses to/from it should not be hot when the temp dial is on full cold detent.
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