AC/Heater Strange noise - Civinfo
 
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post #1 of 4 (permalink) Old 2nd February 2010, 09:02 Thread Starter
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Strange noise

My 1.8 '57' regd i-Shift has developed a strange noise. The noise appears to emanate from the heater/ventilation/A/C system, linked to the internal fan, and can best be described as a 'whispering whistle'. This 'whistle' is in direct ratio to the heater fan, ie the higher the fan setting, the louder the 'whistle'.
I first noticed this on last New Year's Eve, but it disappeared the following day. It has returned again for only a day. It is there with the A/C on or off. It is over and above the normal 'noise' from the ventilation/heater system, but not particularly intrusive, but it is there. Not being a mechanic, I am thinking maybe it is the (cold) atmospherics but it has been colder without the 'noise' rearing it's ugly head. The worst scenario is that perhaps a bearing or like on the heater is about to fail. Luckily the car is still under warranty. As I compose this thread the 'noise' is not there and if my dealer invites me to take the car in, sods law is that they will hear nothing untoward.

Any ideas anyone? Thank you.
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post #2 of 4 (permalink) Old 30th March 2011, 21:48
 
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Hi DoubtingThomas, Just wondered if you resolved your issue with the heater fan noise. I have the same issue with my civic. If I increase the fan, the whistling increases.

Cheers, Marc
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post #3 of 4 (permalink) Old 31st March 2011, 02:00
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Hi, I had the same whistling in my Civic Sport, and I found that it was the " airvalves" in booth sides that was just a little bit open. Point is, open a bit more or total close. Sorry for my bad English.
Best regards.
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post #4 of 4 (permalink) Old 31st March 2011, 07:41 Thread Starter
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Quote:
Originally Posted by marcwicks View Post
Hi DoubtingThomas, Just wondered if you resolved your issue with the heater fan noise. I have the same issue with my civic. If I increase the fan, the whistling increases.

Cheers, Marc
Marc,

I have never heard the 'noise' since, I am glad to report. Perhaps it was atmospheric related. Sorry I cannot help you further. Good luck.
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