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#1
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Bubbles in AC Sight Glass
My car is a '95 E300 series and came with Freon-134.
The ambient temperature here (Montreal Canada) is now around 32F. I happen to look at the Air Conditioning sight glass while the AC compressor was running and noticed lots of bubbles. Does that mean that I may be low on Freon, or are the bubbles due to the low ambient temperatures? Thanks Phil |
#2
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It might mean it is too cold for AC.
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Steve Brotherton Continental Imports Gainesville FL Bosch Master, ASE Master, L1 33 years MB technician |
#3
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Phil's right...
Said another way. It's easiest to check a/c charge on the *hotest* day of the year! If you get a 30 C day, the system has more pressure differential. Michael
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Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E |
#4
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I tried a little experiment in my garage by pointing a hair dryer at the evaporator.
After a few minutes I noticed that the Freon started to rise in the sight glass. This leads me to believe that once the hot weather returns those air bubbles will disappear. Phil |
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