I am curious what the AC cooling temperature should be on an 86 560sl. I did a dianostic test myself and this is what I found. At idle the ac is cooling to 58degrees(high pressure is 125 and low is 25)..at 2000rpm the AC cools to 540(high pressure is the same)...first question..is this a normal cooling temperature? and 2nd..when the ac turns on and the engine is at 2000rpm..the low pressure dips all the way to zero and then works its way back to 25...I have heard that this may be my expansion valve...If my AC is working as stated above should I even worry about it? Oh yes, the above was tested on an 80 degree day.
Thanks for your advice!
Rob Armstrong, Charlotte, NC
Mountain Island Lake
2004 VW Passat GLS TDI-50k
2006 Honda Odyssey EX-L 7k
FOR SALE 1991 300TE 228k
2003 Subaru Outback 57k Silver/Black-SOLD
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1986 560sl 200k Black/Palimino-SOLD
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