A/C compressor behavior
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Driver School Candidate
Joined: Oct 2010
Posts: 18
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From: CA
A/C compressor behavior
Hi!
I own Lexus RX330. A/C compressor cycles on and off on idle when A/C Auto mode is engaged. 9 seconds 'off', 11 seconds 'on' at 70F ambient. Is it by design or I am experiencing a problem? In terms of the ability to supply cool air A/C is fully functional.
Thanks in advance!
I own Lexus RX330. A/C compressor cycles on and off on idle when A/C Auto mode is engaged. 9 seconds 'off', 11 seconds 'on' at 70F ambient. Is it by design or I am experiencing a problem? In terms of the ability to supply cool air A/C is fully functional.
Thanks in advance!
Driver School Candidate
Joined: Aug 2015
Posts: 22
Likes: 1
From: texas
I have always had the same problem with the Rx330 and could never figure out why it does that. When the ac compressor comes on, it blows out ice cold air. When it cycles off, it would blow out air not nearly as cold. Anyone else have this problem?
Pit Crew
Joined: Nov 2014
Posts: 249
Likes: 9
From: CA
That is how your A/C works.
Mine was doing the same thing when the outside temperature is around 70. When summer time came we had couple of days of over 100 degrees. Surprisingly the A/C compressor stayed on all of the time to the point that was making my wife cold.
Mine was doing the same thing when the outside temperature is around 70. When summer time came we had couple of days of over 100 degrees. Surprisingly the A/C compressor stayed on all of the time to the point that was making my wife cold.
Pit Crew
Joined: Nov 2014
Posts: 249
Likes: 9
From: CA
I could also be an A/C relay. The relay is very easy to replace and very inexpensive.
First thing to do is to check level of freon in the system.
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Driver School Candidate
Joined: Oct 2010
Posts: 18
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From: CA
This is an update. I went to a shop that does air conditioners and asked to service the refrigerant. What this means is they pull refrigerant out, weigh it and then inject it back to the system topping up to a necessary level if needed. In my case they added 30%. They told me that it's normal for a 10 year-old car to miss this amount of refrigerant.
What has changed? Nothing it terms of compressor behavior and in terms of conditioner cooling efficiency. However, it suddenly fixed the issue with automatic transmission that I've been experiencing for quite a long time: sudden jerks and gear hunting at low speeds. The engine works much smoother, it's noticeably less noisy now.
What has changed? Nothing it terms of compressor behavior and in terms of conditioner cooling efficiency. However, it suddenly fixed the issue with automatic transmission that I've been experiencing for quite a long time: sudden jerks and gear hunting at low speeds. The engine works much smoother, it's noticeably less noisy now.
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Driver School Candidate
Joined: Aug 2015
Posts: 22
Likes: 1
From: texas
My transmission has always had a jerk in it from day one even with the AC being off. I've done all the fluids,timing belt, and reprogrammed the ECU and its still the same result. It's not a big deal to me unless the transmission starts to slip but there is no sign of that yet.
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