Last post on Sep 24, 2009 at 7:30 AM
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Mazda MAZDA3, Mazda MAZDASPEED MAZDA3, Interior
#174 of 193 Re: Compressor runs even when heat is on? [rcwitty]
by PFFlyer@Edmunds HOST
Oct 26, 2007 (9:56 am)
That SOUNDS like an AC compressor starting up, but not being a 3 owner, I can't go out to mine and duplicate the noise.
In most new cars, the AC compressor is on when you're on the defrost setting. You didn't mention whethere or not this is happening on defrost, so I thought I'd ask.
The fact that it cylces on and off doesn't sound right. I get the start up noise of the compressor when I first start up my heating/cooling system, but just that first time, not over and over again.
That part sounds like you might want to have your service guy check it out.
It might turn out that all this is normal, or they will say it's normal and you just happen to be focused on it.
Any 3 owners out there experiencing something similar?
#175 of 193 Re: Compressor runs even when heat is on? [rcwitty]
Oct 26, 2007 (1:41 pm)
The compressor cycles on and off when the a/c is on. It doesn't stay on the whole time. Also, the a/c (the compressor) will turn on automatically when you select the floor setting or beyond (like when you need to defrost/defog the front windshield), even if the temp is set to the hottest setting, as long as it is above 32F (0C) outside. This part is explained in the owner's manual. So, basically, what you're hearing is normal.
#176 of 193 Re: Compressor runs even when heat is on? [tomkozski]
Oct 30, 2007 (11:19 am)
Thanks for the response. I did see something about this in the manual, but the sounds is quite loud. It also makes my car shake a bit when it turns off. What is that about?
#178 of 193 Start up grind
Nov 19, 2007 (8:43 am)
My daughter is on the verge of an 05 Mazda3 she's fallen in love with. I'm hesitant because this particular car has a kind of high pitched grinding sound when she starts it. It stops in a few seconds, but it sounds metal on metal. What is it?
#179 of 193 Re: Start up grind [carrie8]
Nov 19, 2007 (12:41 pm)
high pitched grinding sound when she starts it
Manual or automatic?
#180 of 193 Installing a 2007 Mazda3 Automatic Climate Control
Nov 27, 2007 (8:34 am)
Does anyone know if it is possible to change the manual climate control on a 2007 Mazda 3 to an automatic climate control unit?
#181 of 193 Re: Installing a 2007 Mazda3 Automatic Climate Control [dbeepath]
Nov 28, 2007 (9:03 am)
Almost certainly not. Auto climate systems use a bunch of external and internal sensors -- even one to detect sunlight through the glass -- to operate and a car without auto climate would not have these sensors and the extra wiring, etc. Then you'd also have to change the panel with all the control knobs since those are different for the auto-climate too, not to mention the module that has the control logic in it.
#182 of 193 Re: Compressor runs even when heat is on? [tomkozski]
May 05, 2008 (9:52 am)
I just bought an 08 Mazda 3 i touring. I also noticed that when I have the A/C running, the compressor (at least it sounds like it) cycles on and off and is quite loud. I figured this was normal but then got paranoid w/ it being a new car and expecting it to be quieter. I also noticed that on certain settings, the a/c comes on automatically. I am just getting familar w/ all the details of the car yet.
#183 of 193 mazda 3 06 AC compressor discrepancies..9/1/05..7/1/05?
Jul 08, 2008 (6:51 pm)
So, i have a Mazda 3i 06 and recently my AC compressor died..its out of warranty..and according to the dealer, they wanted $1555 to replace the compressor, pully, and recharge.
anyways, i found a good mechanic to do the work, but I have been having a difficult time trying to find a used compressor for my 06 3. all of the ones I am finding on ebay are specifically stating that they are for 06 models FROM 9/1/05
...this is a problem..my car is 7/1/05.
now WHY is this a problem? im not sure..according to everyone selling these ac compressors..they all have this listed in their ad.
anyone have any clues as to why I couldnt use one of these in my car? anyone know WHERE i can find one that WILL work in my car? thanks so much for the help..hope im in the right place!