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      05-06-2021, 05:05 PM   #6
mrvedit
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Drives: 2013 M3
Join Date: May 2013
Location: Ann Arbor, MI

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Quote:
Originally Posted by chipguy View Post
If it is the ambient temp sensor, the compressor will not be cycling on and off. You should check the high side pressure, this is a much better indication if the system is over charged. Of course, the most accurate method is to evacuate and find out the weight of the R134a in the system.
Agreed. While my shops have R134R and 1234YF equipment, I didn't think to check it when the car was in Michigan. I'll just suggest she have the system evacuated and re-filled correctly. (She is in Denver.)

I just wondered if this was a common/known problem due to a faulty sensor or setting.
Please consider this thread closed unless I open it again if a re-charge doesn't fix it.
Thanks.
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