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  #1  
Old 12-19-2014, 02:55 PM
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High pitched noise from HVAC blower motor

I have a high pitched noise coming from my HVAC blower motor on cold starts. The problem occurred at the end of last winter and went away when there weather turned warmer. Now that we are in winter again, the sound has returned.

It comes from the passenger side area under the console and last for aboutnfive minutes. Once everything warms up the sound is gone. Any ideas on the root of my problem?

Thank you in advance.

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Old 12-19-2014, 04:54 PM
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Re: High pitched noise from HVAC blower motor

I had a similar issue with my blower moter that turned out to be a bad bearing. It was replaced under warrantee. The issue was not temp. related though, as it happened all the time. Check out this thread;

http://www.jeepgarage.org/f73/blower...ise-72756.html
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Old 12-20-2014, 02:09 AM
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Re: High pitched noise from HVAC blower motor

I have the bad bearing noise as well. I should get it checked out. If I drive down a rough dirt road nearby, sometimes it fixes it. Usually the homegrown fix is volume control on the radio.
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Old 12-20-2014, 01:31 PM
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Re: High pitched noise from HVAC blower motor

I had that happen after I went for an oil change and they did not install the cabin filter correctly... Just a thing to check


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Old 12-21-2014, 01:42 PM
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Re: High pitched noise from HVAC blower motor

I sometimes experience this now. It started about 2 weeks ago when I replaced cabin air filter myself (it was not as easy I expected). I don't think I did anything wrong but it seems to be less noticeable after a while.
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Old 12-21-2014, 01:43 PM
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Re: High pitched noise from HVAC blower motor

Quote:
Originally Posted by mjb4334 View Post
I had that happen after I went for an oil change and they did not install the cabin filter correctly... Just a thing to check


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Do you know exactly what they did wrong? I recently replace cabin air filter myself and had this problem. I don't think I did it wrong and the arrow on the filter was pointing down as it was supposed to.
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Old 12-21-2014, 07:43 PM
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Re: High pitched noise from HVAC blower motor

Mine does the same as well, have an appointment to get it worked on.
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Old 12-21-2014, 07:46 PM
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Re: High pitched noise from HVAC blower motor

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Originally Posted by Chieftain View Post
Mine does the same as well, have an appointment to get it worked on.
Did it start after cabin air filter replacement?
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Old 12-31-2014, 04:45 PM
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Re: High pitched noise from HVAC blower motor

Hfjjgyknkoff
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Old 01-03-2015, 09:39 AM
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Re: High pitched noise from HVAC blower motor

According to others my 2012 made the same noise. I couldn't hear it and it was rather sad that the service writer (who was older than me) said he could hear it clearly. The blower motor was replaced under warranty. I guess it's time to have my hearing checked.
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Old 01-15-2015, 11:16 PM
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Re: High pitched noise from HVAC blower motor

I am going for my second replacement for the HVAC blower as the bearing are going and the unit makes the noises, especially when it's below freezing outside which makes things contract just a bit more. I would think Jeep would get this problem sorted out as this is apparently a known flaw. It will cost me my $100 deductible in my extended warranty and I'm quite frustrated.
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Old 01-16-2015, 05:26 PM
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Re: High pitched noise from HVAC blower motor

Mine was replaced last week. What a relief...
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