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Hi Everyone,
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!
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Rob Armstrong, Charlotte, NC Mountain Island Lake RobAinCLTNC@hotmail.com 2004 VW Passat GLS TDI-50k 2006 Honda Odyssey EX-L 7k FOR SALE 1991 300TE 228k 2003 Subaru Outback 57k Silver/Black-SOLD 2005 C230K 18k Pewter/Grey-SOLD 1997 E420 108k Black/Grey-SOLD 1986 560sl 200k Black/Palimino-SOLD 1985 300sd 340k-SOLD 1979 240d 170k-SOLD 2000 Volvo V70XC-POS couldn't sell fast enough |
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Have a tech check the level of the freon.
If you do it yourself, the readings should be as follows. Clean the window on the sight glass of the drier. Turn on the A>C and look into the glass. IF bubbles are seen, the system is low/ The bubbles should come in for a few seconds then the glass should clear for a while. This cycle is the key to a properly charged system.
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Benzmac: Donnie Drummonds ASE CERTIFIED MASTER AUTO TECHNICIAN MERCEDES SPECIALIST 11 YRS |
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