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08-03-2014, 09:32 PM | #1 | |
AF Newbie
Join Date: Mar 2012
Location: Sacramento, California
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interpreting manifold readings
Hello, I am in need of some assistance interpreting a/c manifold readings.
My new 09 cvpi a/c situation. Initially: static pressure 150/150 ambient 105 degrees 48% humidity. A/C on max at idle: vent= 44deg 30low/225-230high while driving: 44 deg vent I added one can 12 oz r134 with dye. as I added pressure lists: 30/250 @46degrees (*all at idle) 35/250 @46 30/255 @43 34/260 @41 30/260 @40 final= 28-26/220-245 @39deg this is after driving and ambient temp is 92-95 surrounding car (88 outside) Here is a part I questioning: at 1500 rpm a/c clutch cycles every 25-35 seconds. Pressures= 25/275 clutch cuts out, 42/170 clutch engages. vent temp is average 41 degrees To my understanding I need a little more freon, the low pressure switch is opening circuit above idle because of temp drop. Is this correct? Can someone advise me. |
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