Thanks Larry,
I will keep checking.....I might just be chasing my tail though. Last night with 2.5 lbs of freon in the system it still did not seem to be cooling (only 60 degree air from the vents).....I had almost 200psi on the high side at idle but the los side did not seem to be coming down like I have seen before.....Wondering if I have something else wrong....
What do these readings usually mean???
The compressor looks like a GM compressor, is there an orifice tube like in a GM system....could these reading indicate a blocked tube....?
Thanks
Brian

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1995 E300 Diesel
1994 E320
1999 C230K
1994 S500 W140
1990 300 SEL