Last post on Nov 03, 2013 at 6:15 PM
You are in the Mazda3
What is this discussion about?
Mazda MAZDA3, Hatchback, Sedan
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#3187 of 4993 Re: Mazda3 (2005) A/C is the pits by ex_tdier
Apr 19, 2006 (8:28 am)
I assume by coolant you mean refrigerant?
If you ever see ice build up on an evaperator - it normally means that the system is low on refrigerant.
I have seen this on cars, my home AC system and on a refrigerator.
The compressor just keeps on running because there is not enough refrigerant to allow it to reach the point where the high side pressure differential switch reaches its set point & send a signal to the compressor to shut down -
The Mazda3 system is set up a little different - it also has a temperature sensor in front of the evaperator - it shuts the compressor down based on the evaperator hitting a set temperature - so in theory anyway - it should not change the compressor cycle -
Unless - maybe the Mazda3 system - with both a temp sensor and a pressure differential switch is not perfectly balanced - so you have two different sensors telling the compressor to shut down. If the system is set up correctly the pressure switch and the temp switch would both reach the set point at about the same time - because the pressure & temp are directly correlated.
As far as writing Mazda letters - not a bad idea - can't hurt. I still have a flat spot on the top of my head from running into a Mazda brick wall a few times.
I sent Mazda a few e-mails about the AC problems I was having.
The first E-mail - I got the auto reply and then a follow up e-mail from a person - some standard customer service form letter saying how sorry they were about my problems - but no solution was offered. My next e-mail I listed the exact things that I had done so far - something like 3 dealer visits, 2 calls to 1-800 Mazda customer service - plus 1 E-mail to customer service - I told them I had done everything that I could think of to get my issue resolved - and really wanted some advise about what I could do next to get my problem solved - I got the auto reply and then I got a letter that said - THEY RECOMMENDED I TAKE MY PROBLEM TO MY STATES ATTORNEY GENERAL. Really - cross my heart - that was their advise.
Hard to understand how any company would actually put this in a written communication to a customer - but they did.
I sent a follow up e-mail and it was returned to sender - could not be delivered - BLOCKED BY MAZDA.
Now before anyone says I must have been rude or nasty in my e-mails please save it - I was direct but nice. I tried to send additional E-mails - they all came back blocked - return to sender - after about 3 months I was able to send an e-mail that actually went through - I got the auto reply and a letter from a person telling me that Mazda had a TSB out on the AC issue - (it was the diffusser plate fix) - I was told to take this information to my dealer and they would install it.
The diffusser did nothing to help my AC -
#3188 of 4993 Re: Mazda3 AC by slate1 [slate1]
Apr 19, 2006 (9:34 am)
"Here in South Carolina we've already had some 90°F+ days and the A/C in my '06 is having no problem at all keeping the car cool. Car is an '06 3s-GT Sedan with BLACK leather interior - I've got the automatic climate control.
On the hottest day we've had so far (91°F) and with the car baking in the sun for four hours, the fan ran on high for about 5 minutes or so and then gradually began to slow down over the next 30 minutes. I was never uncomfortable in the car after the initial 5 minute "cool-down".
Yep. I'm not saying anyone here is wrong about their A/C problems, but I've had the same amount of "luck" with my A/C . I also have a black leather interior on a 3s GT w/Auto Climate and I have felt comfortable for the most part in weather that has already been 104 here in Dallas, Texas.
As mentioned earlier tho, I suppose their could be a difference in A/C w/Climate Control. I would doubt it tho, climate control is probably just some extra sensors and electronics. Good Luck to everyone still having probs tho.
#3189 of 4993 Re: Mazda3 (2005) A/C is the pits by ex_tdier [z71bill]
Apr 19, 2006 (12:24 pm)
Sounds about right. They have branded you as a nuisance and cut you off. Next the dealers will tell you to go somewhere else. A friend went through the same BS with Chrysler as he was trying to resolve a problem. Mazda doesn't care,they kep selling these cars on looks etc. and nothing more. A 20 year old doesn't give a rats ass about the A/C as long as he looks good and the car goes fast.
Today it was 70F in the sun and my A/Cs coldest temp out of the vent was 43 to 44F. But at a outside temp of 80F plus I don't think the A/C will be a big help.
Apr 19, 2006 (1:14 pm)
Although I have had major issue with the weak AC mine has been doing OK - temps are in the mid 80's -
Last summer (about the same temps) I would run the fan on 3 - recirculate on - all the time and the car was never really cool - the last few days I have been using fan speed 3 at first - then switch back and forth between 2 & 3 - 3 is a little cold (something I thought I would never say) and 2 is a little warm. Some of the time I turn it to outside air and leave the fan on 3 - it still seems to keep the car cool. This is a new condition - I am 100% sure something has changed for the better.
When I shut the car off - the radiator fan keeps running for a few seconds - my car did not do this before - My assumption is the fan must be running more than it did before - although I can not tell if it is running while I am driving - or if it did before.
The radiator fan pulls air through the condensor - which does have an impact on the ability of the AC system to produce cold air. I do not know why the radiator fan started doing this - as far as I know Mazda did not change anything on my car - or at least they did not indicate it on my invoice.
I also noticed that when I turn my AC on - the radiator fan almost always starts up right away - this is also something new - it did not do this last year.
Maybe this has something to do with the problem - I do not know -
If anyone is having weak AC issues - does your radiator fan start up as soon as you turn on the AC?
Does it continue to run after you shut the car off?
It is normal for the Radiator fan to come on with the AC
#3191 of 4993 Re: Clicking Seat Belt [slate1]
Apr 19, 2006 (5:14 pm)
Ha that is EXACTLY where mine is making the sound...my Mazda dealer replaced my seat belt unit and scratched the bejesus out of the inside of my car while either taking the seat out or replacing it...and the funniest and absolutely most frustrating thing is that like 2 days later what happens...the darn clicking is back with avengence!!!
Apr 19, 2006 (5:20 pm)
Hey I have a question...I just got my '06 Mazda 3 back from the dealership. They replaced my whole audio unit due to the clock not keeping proper time. My question is what is supposed to light up...it just doesn't quite look the same. I know that the area around the volume button is illuminated, as well as the 2 dials for the heat/ac and the direction, but what else should be? Or am I just going crazy?
#3194 of 4993 Re: Mazda3 AC by slate1 [lordpasty]
Apr 19, 2006 (8:36 pm)
I think you nailed it when you said that the difference between the previous Mazdas w/climate control are the extra sensors.
Yeah, I meant refridgerant when I said coolant. The former takes too long to type.
Like z71bill wrote : The Mazda3 system is set up a little different - it also has a temperature sensor in front of the evaperator - it shuts the compressor down based on the evaperator hitting a set temperature. The Mazda has 2 sensors and it could be how they are programmed or designed that is affecting the compressor cycle, even though it shouldn't.
From the A/C link I posted: "There is a high pressure switch, a low pressure switch, and a "medium pressure switch. The PCM gets data from all 3 switches, and controls the compressor relay. This is a TXV system, and evaporator icing is controlled by a thermistor on the evap face.
Hard to say if the cycling is caused by hitting the HPCO, another pressure switch, or the anti-icing thermistor. Pressures will tell us plenty. "
I believe the fault lies in the sensors and programming, but only pressure testing the A/C system will help us.
We need to post high and low pressures whatever the ambient, especialy if the same thing happens when it's hot and or cold . But most important, pressures when it's doing it's cycling will tell us much more than you think.
"Someone need to report the system pressures while running the engine at 3,000 rpm it will help us tell you what the system is doing. The description of cycling regardless of ambient sounds like a PCM problem. Post up some 3k rpm test data please."
#3195 of 4993 Update: 2006 Mazda3 GT w/Climate Control A/C
Apr 19, 2006 (11:42 pm)
I keep on running into posts in other forums by 06 Mazda3 owners (GT) models that are claiming that their 3 has great A/C. Again, something is different between ours (2005,2004's) and theirs.
If anyone has any connections to find out what, that would help. Thanks
#3196 of 4993 Re: Audio Lighting [steph_stanton]
Apr 20, 2006 (9:48 am)
Pretty much everything on the dash should light up - if it's a button it's lit on mine...