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Why The Cool Air Of My Car's A/c Goes Up And Down?


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#1
melwong

Posted 24 April 2015 - 10:24 PM

melwong

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Why the cool air of my car's A/C goes up and down?

It goes from cool to warm to slightly cool again then to warm as i drive from point a to point b

#2
kaminski

Posted 24 April 2015 - 11:26 PM

kaminski

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QUOTE (melwong @ Apr 24 2015, 10:24 PM) <{POST_SNAPBACK}>
Why the cool air of my car's A/C goes up and down?

It goes from cool to warm to slightly cool again then to warm as i drive from point a to point b


sounds like it could be a malfunctioning expansion valve,thats the first thing to check, if thats okay then perhaps the compressor clutch itself is acting up. Other than those two, it could be anything from a leaky hose to a moisture laden system.
The way to combat obnoxious ideas is with other ideas. The way to combat falsehoods is with truth.


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#3
axl2000

Posted 14 May 2015 - 10:14 PM

axl2000

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Hi, 

 

I have the same issue. Sent to SC and they are unable to pinpoint the issue. However, found a "temporary" solution for it. The symptom will most likely happened when the temperature is high ( ie above 35C). I had to drive a with the window and to reduce the temperature. After a while when I turn on the AC, cold air will start blowing consistently. Perhaps you can try and and see whether we both have the same issue.

 

Not sure why is that so though and how to fix it.