MINI2

Pebbles · Jun 7th, 2004, 01:20 AM

I live in Texas and have run the AC on my Nov MCS the whole time I've owned it because I just leave the Auto AC set to 70. The car runs great and I never had a problem until 2 weeks ago. Now I can hear a much deeper roaring sound to the engine as I am reving up to the next gear. It is so loud I can't hear the supercharger. And it doesn't do it all the time. I drove around over the weekend for over an hour before it started making that sound as I moved from 1st to 2nd and 3rd in downtown traffic. Seems once I'm going, like on the freeway, I don't hear it. and If I cut off the AC the roar goes away.

Is this normal for the hot months of the summer?
or should I take him in to be checked?

Malin Dixon · Jun 7th, 2004, 09:49 PM

Quote: Originally Posted by Pebbles

I live in Texas and have run the AC on my Nov MCS the whole time I've owned it because I just leave the Auto AC set to 70. The car runs great and I never had a problem until 2 weeks ago. Now I can hear a much deeper roaring sound to the engine as I am reving up to the next gear. It is so loud I can't hear the supercharger. And it doesn't do it all the time. I drove around over the weekend for over an hour before it started making that sound as I moved from 1st to 2nd and 3rd in downtown traffic. Seems once I'm going, like on the freeway, I don't hear it. and If I cut off the AC the roar goes away.

Is this normal for the hot months of the summer?
or should I take him in to be checked?

Does the tone of the roar rise and fall with engine speed? If so, it's likely to be the aircon compressor, or low refrigerant charge. If not, it could just be that the fan runs faster (louder) when the condensor pressure rises, which it will do if the outside temperature rises.

bodinski · Jun 7th, 2004, 10:28 PM

Try a search for "ac howl" and you'll find you aren't alone. Mine's been howling for a year now.
Best - Bodinski

Pebbles · Jun 8th, 2004, 02:34 AM

Thank you both! I feel better about it. Today our High was only 92 and he was running and sounding great! Last Monday, on Memorial day, my outside temp in the car said 104 and he sounded really different. I have noticed that when the temp is over 95 or 96 he makes the deep engine sound.

IML337 · Aug 22nd, 2004, 11:17 PM

mine's been howling since October 2002...

Miniphobea Teen · Aug 26th, 2004, 12:44 AM

mine too!!

usaminicooper · Aug 26th, 2004, 03:40 AM

I have a Sept. 2002 build S. and mine is quiet.

Like a mouse.
Really I can't hear a howl (owl) or any other animal noises. What up with yours?

Check it out with service.

IML337 · Aug 29th, 2004, 07:31 AM

Pebbles I read something here on mini2 a few months back saying that a dealer had found that the noise is caused by the recirculate switch not closing or something...?

It's still cool down here in Aus, so I can't test it, but next time your car makes the noise, try pressing the recirc button, and see if it has any effect?

Interested to know how you go!

Jun 7th, 2004, 01:20 AM	#1
Pebbles MINI2 Oldie Join Date: Jan 2003 Location: Austin, Texas Local Time: 06:17 PM Posts: 292 Offline	Loud Roar with the AC on I live in Texas and have run the AC on my Nov MCS the whole time I've owned it because I just leave the Auto AC set to 70. The car runs great and I never had a problem until 2 weeks ago. Now I can hear a much deeper roaring sound to the engine as I am reving up to the next gear. It is so loud I can't hear the supercharger. And it doesn't do it all the time. I drove around over the weekend for over an hour before it started making that sound as I moved from 1st to 2nd and 3rd in downtown traffic. Seems once I'm going, like on the freeway, I don't hear it. and If I cut off the AC the roar goes away. Is this normal for the hot months of the summer? or should I take him in to be checked? "Mr Bridger"

Jun 7th, 2004, 10:28 PM	#3 (permalink)
bodinski [hot rod harlot] Join Date: Oct 2002 Location: tennessee Local Time: 06:17 PM Posts: 148 Offline	Try a search for "ac howl" and you'll find you aren't alone. Mine's been howling for a year now. Best - Bodinski Last edited by bodinski : Jun 7th, 2004 at 10:43 PM.

Jun 8th, 2004, 02:34 AM	#4 (permalink)
Pebbles MINI2 Oldie Join Date: Jan 2003 Location: Austin, Texas Local Time: 06:17 PM Posts: 292 Offline	Thank you both! I feel better about it. Today our High was only 92 and he was running and sounding great! Last Monday, on Memorial day, my outside temp in the car said 104 and he sounded really different. I have noticed that when the temp is over 95 or 96 he makes the deep engine sound. "Mr Bridger"

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Jun 7th, 2004, 09:49 PM	#2 (permalink)
Malin Dixon MINI2 Senior Join Date: Apr 2004 Local Time: 11:17 PM Posts: 363 Offline	Quote: Originally Posted by Pebbles I live in Texas and have run the AC on my Nov MCS the whole time I've owned it because I just leave the Auto AC set to 70. The car runs great and I never had a problem until 2 weeks ago. Now I can hear a much deeper roaring sound to the engine as I am reving up to the next gear. It is so loud I can't hear the supercharger. And it doesn't do it all the time. I drove around over the weekend for over an hour before it started making that sound as I moved from 1st to 2nd and 3rd in downtown traffic. Seems once I'm going, like on the freeway, I don't hear it. and If I cut off the AC the roar goes away. Is this normal for the hot months of the summer? or should I take him in to be checked? Does the tone of the roar rise and fall with engine speed? If so, it's likely to be the aircon compressor, or low refrigerant charge. If not, it could just be that the fan runs faster (louder) when the condensor pressure rises, which it will do if the outside temperature rises.

Aug 22nd, 2004, 11:17 PM	#5 (permalink)
IML337 saving the world Join Date: Jul 2002 Location: Singapore Local Time: 09:17 AM Posts: 3,068 Offline	mine's been howling since October 2002...

Aug 26th, 2004, 12:44 AM	#6 (permalink)
Miniphobea Teen MINI2 Regular Join Date: Nov 2002 Location: Va, Newport News Local Time: 07:17 PM Posts: 141 Offline	mine too!!

Aug 26th, 2004, 03:40 AM	#7 (permalink)
usaminicooper MINI SPONSOR Join Date: May 2004 Local Time: 11:17 PM Posts: 335 Offline	I have a Sept. 2002 build S. and mine is quiet. Like a mouse. Really I can't hear a howl (owl) or any other animal noises. What up with yours? Check it out with service.

Aug 29th, 2004, 07:31 AM	#8 (permalink)
IML337 saving the world Join Date: Jul 2002 Location: Singapore Local Time: 09:17 AM Posts: 3,068 Offline	Pebbles I read something here on mini2 a few months back saying that a dealer had found that the noise is caused by the recirculate switch not closing or something...? It's still cool down here in Aus, so I can't test it, but next time your car makes the noise, try pressing the recirc button, and see if it has any effect? Interested to know how you go!

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