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Discussion Starter · #1 ·
Hi All,

My AC is still blowing cold air, but between 2 and 3k rpm, it makes a "whining" sound... Not sure what it is? Here is a video:

Is it safe to ignore, or is my AC dying?

Also, when the AC is on, you can hear the engine making a "knocking" sound, that varies with the RPM. any idea what could that be? Is it normal? :surprise
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