AC not cold after working a while
Intermediate
Joined: Oct 2016
Posts: 442
Likes: 129
From: Texas
The refrigerant cools by expanding the gas through the evaporator coils. Low pressure on refrigerant makes it is expand more than intended. The greater expansion causes a greater temperature drop, thus it freezes quicker. It is a little counterinutitive.
Also, leaks in the evaoprator can cause a freeze around the leak due to the rapidly expanding gass when it escapes.
Also, issues with airflow through the evaporator can lead to freezes. That is usually due to a clogged filter or problem with the fan motor.
Also, leaks in the evaoprator can cause a freeze around the leak due to the rapidly expanding gass when it escapes.
Also, issues with airflow through the evaporator can lead to freezes. That is usually due to a clogged filter or problem with the fan motor.
Thread Starter
Driver
Joined: Nov 2018
Posts: 78
Likes: 17
From: tx
Thanks, guys, for your reply.
Just an update: today Lexus dealer told me that the issue is a known issue (multiple people reported). They are waiting for Lexus manufacturer for a fix and will let me know.
I have a bit doubt on that and am thinking to going to different dealer. But on the other hand, I did see from record that the previous owner did report the same issue as early as 2018. So, I don't think there is a leak since it would not be working after 3 years. .
Just an update: today Lexus dealer told me that the issue is a known issue (multiple people reported). They are waiting for Lexus manufacturer for a fix and will let me know.
I have a bit doubt on that and am thinking to going to different dealer. But on the other hand, I did see from record that the previous owner did report the same issue as early as 2018. So, I don't think there is a leak since it would not be working after 3 years. .
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