Question about 1998 Buick Century

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The Air Conditioning makes a loud noise when you turn up the fan speed.

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Something could have gotten stuck in there, and throwing the fan out of balance, or the bearing on the fan motor are bad, if that's the case the fan blower motor will have to be replace.

Posted on Aug 06, 2010

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SOURCE: fan flutter noise with air conditioning on

I WENT TO THE VW DEALER...HAPPENED TO PASS BY. THE PROBLEM WAS SOLVED WHICH WAS FLUTTERING SOUND FROM THE AIR CONDITIONING FAN.

IT WAS COMING, I WAS TOLD, FROM THE MECHANISM THAT ADJUST THE TEMPERATURE, AND NOT THE FAN

THANKS FOR THE FOLLOW UP

Posted on Sep 08, 2008

localwonder
  • 6784 Answers

SOURCE: Air conditioning fan makes loud noise the faster you ru it.

Concerning your broken vent -- this can be caused by a broken linkage or a malfunctioning servo motor as well. these vent have air ducts the sway back and forth to adjust the dual air flow function. if the servo o linkages are malfunctioning or not connected for some reason, it will not allow total control of the air flow and temperature range. Now, if you have a combination of a flow error and temperature error as well, thai can be caused by a combination of the two.

In this case, you will need to inspect the linkages as well as the servo motor function as well. in addition, i would test the air temp sensors for there operational value. they control the temp when you adjust the coll or hot function.

Concerning the Loud noise coming from the blower fan---

This issue can be caused by a misalignment within the blower housing or, it can also be caused by some minor damage within the motor itself, causing it to rotate in a erratic manner, in return, forcing it to rub against the housing itself. the best solution here is to extract this blower fan housing and inspect for lose fan propeller and motor stability. replace parts accordingly.

PLease rate and have a great day:)

Posted on Apr 22, 2009

  • 4 Answers

SOURCE: 2001 New Beetle A/C fan noise

I think it is the cabin/ pollen filter. The noise is louder on normal AC operation cos thats when the air is being pulled in through the filter and the sound decreases with recirculate because the filter only functions for outside air.
Need to use a credit card or similar to seperate and move the upper dash centre piece towards windscreen, it clips off. Then open the 3 x torx screws and lift the dash on the passenger side. then remove the plastic cover (oddly shaped) it has about 7 screws, then twist and remove, it requires some real effort, then pollen filter is visible. replace filter and voila! it would make your AC perform like a new car again!!
Hope it helps, Yusuf Johannesburg-South Africa yusuf.ginnah@poynting.co.za

Posted on Mar 05, 2010

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Concerning your broken vent -- this can be caused by a broken linkage or a malfunctioning servo motor as well. these vent have air ducts the sway back and forth to adjust the dual air flow function. if the servo o linkages are malfunctioning or not connected for some reason, it will not allow total control of the air flow and temperature range. Now, if you have a combination of a flow error and temperature error as well, thai can be caused by a combination of the two.

In this case, you will need to inspect the linkages as well as the servo motor function as well. in addition, i would test the air temp sensors for there operational value. they control the temp when you adjust the coll or hot function.

Concerning the Loud noise coming from the blower fan---

This issue can be caused by a misalignment within the blower housing or, it can also be caused by some minor damage within the motor itself, causing it to rotate in a erratic manner, in return, forcing it to rub against the housing itself. the best solution here is to extract this blower fan housing and inspect for lose fan propeller and motor stability. replace parts accordingly.

PLease rate and have a great day:)

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IT WAS COMING, I WAS TOLD, FROM THE MECHANISM THAT ADJUST THE TEMPERATURE, AND NOT THE FAN

THANKS FOR THE FOLLOW UP

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