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Condenser or compressor?

Biesmeyer on Mon August 24, 2009 11:51 PM User is offline

Year: 2003
Make: Mini
Model: Cooper S
Engine Size: 1.6
Refrigerant Type: 134
Ambient Temp: 86
Pressure Low: 30
Pressure High: 150
Country of Origin: United States

Evac system, held at 29. charged with 14 oz of 134. Low side 30 high side 150 . I can only get 60 degree vent temp. Can't figure out if compressor is bad or condenser clogged. Any suggestions?

Cussboy on Tue August 25, 2009 7:16 AM User is offline

Your high side pressure seems a little low? Is 14 oz. the correct amount for your model?

TRB on Tue August 25, 2009 12:04 PM User is offlineView users profile

15 ounces is what I show as the R134a capacity.


When considering your next auto A/C purchase, please consider the site that supports you:

Chick on Tue August 25, 2009 6:28 PM User is offlineView users profile

And don't forget that the hoses hold a couple ounces that you may not have gotten in there, so you are most likely a few ounces low...Hope this helps..

Email: Chick


Freedoms just another word for nothing left to lose

Biesmeyer on Thu August 27, 2009 12:30 AM User is offline

Tag on car states 14 +/- 4 oz . My sight glass shows clear, so I didn't want to over fill.

HECAT on Thu August 27, 2009 5:43 AM User is offline

Wow +/- 4 oz means factory spec is between 10 and 18 oz.; thats a big spread. Most small charge systems like this one would be +/- 1 oz. Charge accuracy will depend on method used to charge (cans, RRR machine, scale calibration, etc.); how did you charge? Why did you vac and recharge?

Condenser internal restrictions would come from debris from a previous compressor failure, use of sealant, etc. This would usually show as excessive high side pressure which you do not have. Condenser external restrictions (bugs, dirt, etc.) restricts the ability to shed heat and is usually also seen as excessive high pressure. A Compressor's inability to pump would be seen as low pressure too high and high pressure too low. Your low pressure does not support this either.

Pressures provided and current answers provided indicate low charge. We would need more system history, testing data, and your reasoning behind suspecting the compressor or condenser to be able to provide much more.


HECAT: You support the Forum when you consider for your a/c parts.


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