When heat or air conditioning is on, I can hear a vibration noise, even worse when on 3,4 nob position.
Jun 11, 2009 at 3:56 AM
1999 Chevy Monte Carlo Vibration air&heat
SANDEEGB
- MEMBER
- 3 POSTS
Is the sound coming from under the dash on the passanger side?
Jun 21, 2009 at 1:11 PM
I can hear mostly from the vents, something like a vibration noise, but I can can hear noise from the passenger side, kinda like a hum.
Jun 21, 2009 at 3:44 PM
The fan is located under the dash on the passanger side. Make sure that it isn't loose. Also, if it is tight, remove it and make sure nothing got stuck in the fan blade.
Let me know what you find.
Joe
Let me know what you find.
Joe
Jun 22, 2009 at 3:17 PM
Strange, where I live, it has been in the high 90's and 100's, hot and high humidity. It has been at least 15-20 degrees cooler, and there is no noise at all. Would the outside temp have something to do with it ? The heat and air works just fine.
Jul 1, 2009 at 2:19 AM
Maybe the motor is getting too hot. It may be going bad and the higher temps affect it.
Jul 1, 2009 at 8:51 AM
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