Mazda3 Maintenance & Repair

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  • z71billz71bill Member Posts: 1,986
    Good idea - its worth looking at.

    I normally check this when I rotate my tires - while they are off the ground I give them a hard spin and see how long they turn - it is normal for a VERY SLIGHT amount of brake drag - at least ever car that I have ever done this test to had some - but not so much that it prevents the wheel from spinning around for 15 or more seconds. By slight I mean you can hear it rub (SHHSHSHSH) but it does not slow the wheel down much.

    I only did the rear wheels of the Mazda3 - I guess I should also check the front - which would be a little tricky - think I would need to get both front wheels off the ground at the same time - and I don't see any point on the Mazda3 to put the jack (to lift both wheels at the same time).
  • cnaylor384cnaylor384 Member Posts: 2
    I've done a search but haven't found anything on this problem. I recently purchased a 2004 Mazda3 hatchback with 16,500 miles on it. The headlights were too dim so I brought it to the dealership (it's not a brightness setting - I've checked that) to have them replaced under the warranty. According to the dealer, the only way to replace the bulbs for the headlights is to remove the front bumper. I've always replaced my light bulbs myself and this seems like the most bass ackwards design situation I've heard of. Can anyone else confirm that this is the case or is the dealer trying to pull one over on me? I have looked under the hood and can confirm that there doesn't appear to be a way to replace the bulbs from above.
  • z71billz71bill Member Posts: 1,986
    Take a look in the owners manual - it tells you how to replace all the bulbs - nothing in there about removing the bumper.
  • kagedudekagedude Member Posts: 407
    I tried Soft Scrub but the streak is still there so I guess it is a scratch. Now, I'm contemplating to have to have it replaced or wait a few. Its a 4 mos old car. :cry:
  • leowinleowin Member Posts: 18
    My appointment with the dealer to correct the problem of pulling to the right did not go too well.

    The service guy took a test drive in my car and agreed with me that car is pulling to the right and rightaway recommended an alignment adjustment. I spent 3 hours in the waiting lounge, got the car, drove for about 20 kms only to find that the problem is persisting.

    I went back to the dealer, but this time the service guy basically said that all that can be done has been done, nothing more to do... He advised me to drive till the first service - 8000 kms, and said that sometimes these problems dissappear!?!?

    I am extremely hardpressed for time and had no choice other than taking the car.. it still pulls to the right, to add to the woes, steering feels extremely tight at all speeds and AC is very weak in these brutal summer time.

    To sum it all, I am not happy with the car.. and started wondering whether it was a good decision to go with mazda, overlooking Hondas & Toyotas... :mad:
  • cnaylor384cnaylor384 Member Posts: 2
    Duh. You're right - thanks.
  • autonomousautonomous Member Posts: 1,769
    service guy ... agreed with me that car is pulling to the right and rightaway recommended an alignment adjustment. I spent 3 hours in the waiting lounge, got the car, drove for about 20 kms only to find that the problem is persisting ... service guy basically said that all that can be done has been done, nothing more to do... He advised me to drive till the first service - 8000 kms, and said that sometimes these problems dissappear

    That seems counterintuitive as you would think that most alignment problems get worse with time. Was there any improvement in correcting the "pulling"? Part of the problem with some alignment work is that the shop is not equipped with the proper computerized device to reduce the guesswork and meet specifications. You may want to consider another (larger?) dealership or call a collision centre to ask about how they repair cars with this type of problem.

    It would not hurt to document your problem and the incomplete solution in a letter to the dealership and Mazda USA.
  • bigelmbigelm Member Posts: 995
    Hey Everyone,

    I just purchased my SP Hatchback and I'm enjoying this little car ;-) I had done some search here and in other places but came up short. SO, after going to the dealer today, I was told that if your car has rain sensing wipers, then there is no rearview mirror w/ Homelink available yet.

    According to the dealer, Mazda is going to make this mirror available by late summer. If anyone knows anything about this or if this is false, then please advise me otherwise. I really want to have this, more for the sake of homelink and autodimmer than anything else. Otherwise, I guess I'll wait till late summer.
  • ex_tdierex_tdier Member Posts: 277
    The design flaw (I have even heard SOMEONE call it a defect) with the Mazda3 is the evaporator is way to small - the flow of refrigerant from the compressor cools it down (like it should) - once it reaches a set temperature point a temperature probe located in front of the evaporator then tells the compressor to shut off - in order to protect the compressor from damage caused by starting under load - it has a time delay built in - so the compressor can not turn back on right away no matter what the temperature of the evaporator is. This time delay causes the vent air to go from cold to cool to almost warm before the compressor kicks back on. If the Mazda3 had a larger evaperator the compressor would run longer between cycles and you would have a much better system.

    I was at the dealer last weekend. The service manager, very knowledgable mentioned this IS a problem and he has sent in a "complaint" to Mazda Canada. Mazda [Canada] at least requires 25 such complaints before they will take a look at the problem.

    What he described as the problem is within the PCM (or computer) that is forcing the premature cycle. I asked him if there was a software mod that would allow the computer to delay the cycle, he said no. I know with my TDI one could hook up a peripheral called the VAG-COM through a laptop and modify various computer controlled settings.

    So, in a nutshell, some dealers are aware of the problem. But, what we all must do now is speak to service manager at your Mazda dealer and insist he/she write up a complaint to Mazda Canada or USA. I would follow-up with a phone call to ensure compliance. Remember, it takes 25 dealer complaints to Mazda HQ for them to look into the problems.
  • z71billz71bill Member Posts: 1,986
    The compressor turning off and on does make you wonder if it is a programing problem. I went down this path with the AC tech from Mazda.

    He did not feel the program logic was the problem - the program is designed to shut off the compressor when the evaperator hits a set temp (normally around 32 degrees) if you changed the program so the compressor keeps running longer it would actually freeze the water that condensates on the evaperator and the ice would block the air flow and the system would blow no air.

    He tested this by putting a gauge on the high pressure side of the system - the compressor ran until the correct pressure was reached. I know that they can convert pressure to temperature by using a formula. So if the temp is (guess) 300 PSI then the temp in the evap is 33 degrees.

    The evaperator is just too small - I would like to compare the evaperator size of a Mazda3 and Mazda6 - just too see if the one in the 3 was really smaller. That would prove it once and for all - but I have no idea how to get my hands on those parts.

    BTW - I have logged complaints at two different dealerships - called the Mazda 800 number many times - and also sent several E-mails to Mazda. Short of booking a flight to Japan I don't know what else I can do!
  • mdaffronmdaffron Member Posts: 4,421
    I had a "reunion" of sorts with my dad and my two brothers last weekend, and it was the first time they had seen (or been in) my 2005 Mazda3s hatch. It was about 1 p.m. and in the lower 90s when we all piled in (and we're good-sized people) for a 10-minute ride to Ruby Tuesday's.

    Before we'd even left my dad's subdivision (i.e. within two miles of leaving the driveway) my dad remarked from the back seat, "Well, there's nothing wrong with the air conditioning in this car!"

    Meade
  • anon70anon70 Member Posts: 82
    What is the Mix Control Cable? and can i adjust it myself?

    if so, what does it look like?
  • z71billz71bill Member Posts: 1,986
    First I don't know for sure that MCC is even the Mix Control Cable - it is just a guess - but then if its not that I don't know what else it could be.

    Anyway - I think when you turn the little knob to adjust the air temp from cold to hot that it is moving a cable that is moving a little door that is between the AC evaperator and the heater core.

    If you want to look at how to get to your AC evaperator (not a good idea - but I may try it anyway just to see what I can see) you can look at a TSB that tells you how to install the diffuser on the Mazda3. Go to this web site

    http://web2.iadfw.net/theman/protegefaq/tsb/tsbmenu.html

    Click on Mazda3 -

    then click on 07-005/04 2004 MAZDA3 - A/C POOR PERFORMANCE

    It shows you where the AC Evap is and I think you should be able to also see the little door that adjusts the air temp.
  • coastercoaster Member Posts: 46
    Does anyone know if the "automatic climate control" unit in the 2006 Mazda 5 is the same A/C unit that is in the Mazda 3?
  • mdaffronmdaffron Member Posts: 4,421
    Click on Mazda3 - then click on 07-005/04 2004 MAZDA3 - A/C POOR PERFORMANCE

    Interesting to note that the above "fix" (or whatever you want to call it) only applies to the 2004 Mazda3. Read into that what you will, but that would imply that the "problem" was fixed for the 2005 MY. If not, the TSB would read "2004-2005 MAZDA3 - A/C POOR PERFORMANCE".

    Meade
  • z71billz71bill Member Posts: 1,986
    I agree with your logic - but why are some 2005 owners complaining about a weak AC system?

    I can only guess - I do not have a 2005 - but did Mazda just stick the $.99 plastic air difusser on the 2005 model and proclaim it is FIXED? I ask the Mazda tech if I could just upgrade my 2004 AC with something better from the 2005 Mazda3 - at my expense - he claimed they did not change the AC system in 2005.

    Maybe it is just REAL BAD quality control - some work OK - others are a little weak - and some are very weak. The thing you can't seem to understand - just because one car doesn't have a problem does not mean that all cars of that model are also problem free. I could also switch that - just because one car has a problem does not mean they all are defective.
  • chacobleuchacobleu Member Posts: 228
    My car just turned 2K miles and 1mth old (2005 3s hatch). I knew getting into this car there were reservations about the a/c; but how can you deny such a great car. Even so, I bought a digital thermometer (it cost a few dollars, but this one came with a humidity read out which makes it useful for the home as well). The first week I had my car, the middle vent air temp. (in recirculation mode) got all the way down to 42 during my 30 minute commute. I don’t recall the fan setting nor if the register was set to fresh or recirculation mode. The outside temps for the first week were as follows: day time highs ranging from 71 to 97 and night time lows ranging from 57 to 79; this made the average 24 hr. temp. range 66 to 88. The humidity level was high during the hotter days and low during the cooler days. BTW – I used Newark, NJ historical data stats since Newark is about 20 minute drive. Even though the air vent was approx. 6 degrees warmer than my previous car, I was sold that the a/c was working fine. Besides, it felt fine.

    The other day, after dropping my son off at day care @ 10:30am, I put the a/c on for my drive to work. I had been out and about with the car with the sun beating down on it for the better part of that morning. Since I still had the thermometer in the glove, I decided to retest the a/c. Surprise – the air vent temp never got below 48 in recirc. I wondered how odd since the day time high was only 78 with 80% humidity. THIS IS VERY IMPORTANT: I did note at the time that the dash was considerably hot before the commute, during the commute, and after the commute. I wasn’t able to retest the a/c until yesterday afternoon (I wanted a mostly sunny, hot and humid day with the car sitting in the sun during work hours with the all the windows closed). The high for the day was 84 with 90% humidity. When I got in the car, the temp. was 127 with the dash being extremely hot; rolling down the window immediately (under 5 minutes) brought the inside temp. down to the low 100; the middle vent temp. read mid 90. At this point, I turned on the a/c to recirc on fan speed 3. Here are the results of the middle vent: within 5 minutes low 50; by 10 min. upper 40; after 15 min. mid 40 (so I turned the fan speed to 2); at the end of my commute 42. I kept it in recirc the whole time with the fan speed no lower than 2. 6 degrees cooler than the day before and it was hotter than the day before. The dash area above the middle vents was mild to cool where as the dash above the steering was still very warm. The sun was beating down on the dash for most of that commute.

    I’ve drawn a couple of conclusions from this which is no different than what everyone else has said before. The a/c unit (from the compressor to the evap) is a good fit for this type of vehicle. It does its job and it does it well; not spectacular (which is probably more attributable to the cycling on/off), but more than adequate. Of course, some of this credit goes unnoticed because of things like the dark interior (especially the dash). The a/c has to cool down the dash area above the vents before the air coming out of the vents is able to reach 42. So, with the interior as such, than the a/c unit needs to grow a bit more so that the optimum operating temp. could be reached more towards the beginning of a commute rather than the tail end. Otherwise, one has to keep the fan speed on 3 (or even 4) for a while until the air inside the cabin is able to filter through and cool off. Remember, it has to also cool off and keep cool a heat absorbing dash. It would be interesting to know how quickly this a/c cools off the base model sedan with a 2.0 and a beige interior vs. a 2.0 and a dark interior after both have sat in the same location under the sun for at least 3 hours. I picked the 2.0 since you can't get a beige interior with the 2.3.

    My last words: since Mazda wasn’t smart enough to figure this out, maybe they should give away (FREE) those sun shields for the front windshield (with the Mazda 3 logo). Hey, should I be telling this to Mazda instead?
  • z71billz71bill Member Posts: 1,986
    When my wife first turned on the AC today both she & my daughter claimed they could smell a vinegar odor coming out of the vents. I thought they were going nuts - but this after noon I smelled the same thing. But to me it smells like fresh silicone calk. It only lasts a few seconds - I have no idea what this could be - I sure hope its not mold growing in my AC system.

    I took the plastic piece that covers the air handler (by the passengers feet) -I can see a couple of metal tubes that (I assume) feed hot coolant to the heater core - It had been about 45 minutes since the car had been driven - and these metal tubes & the side of the heater core were still so hot I could not touch them. The heater core is located right next to AC evaperator - I planned on taking the cover off so I could take a peek inside to check for mold - but it started to get dark and I decided to wait until morning.

    Seems to me that the location of the heater core is also making the AC system work extra hard - I know some cars (not the Mazda3 BTW) have a valve system that automatically shuts the flow of hot coolant off when you are on max cooling.

    I may remove both heater hoses from where they go into the fire wall and insert a metal tube - so that the flow of hot coolant does not enter the heater core. I have seen this done as a temp fix when a heater core starts to leak - although it kills the heater it stops coolant from leaking onto the floor of your car. I am wondering if removing this heat loan would help the AC system. Couldn't hurt.
  • x5918x5918 Member Posts: 30
    google: convex driver side mirror US

    UMTRI-97-32 (1997)
    http://www.umich.edu/~industry/PDF/97-32-Abstract.pdf

    Convex rearview mirrors are currently prohibited in the U.S. as original equipment on
    passenger cars except for the exterior, passenger-side position. One of the primary reasons for this restriction is a concern that convex mirrors may cause drivers to overestimate the distances to following vehicles and therefore make unsafe maneuvers.
    There is a considerable amount of empirical evidence that convex mirrors do cause
    overestimation, but the effect is not theoretically well understood....

    Later, another study, done in year 2000 suggests, that the US got it all wrong. http://www.leaonline.com/doi/abs/10.1207/STHF0203_7

    So everywhere else the convex mirror is used on both driver side and passenger side, but here in US the government steps in to "protect" you :cry:

    The European and the Aussies gets the original mirror. If somebody finds the part number and place to order from - then please post.
  • chacobleuchacobleu Member Posts: 228
    Last week my car developed a faint rattling noise from the dash. First of all it only occurs at highway speeds (after 50 mph and all the way past 90 mph). It doesn’t rattle right off the bat at highway speeds, but shortly there after. Sometimes, the sound is heard constantly at highway speeds; sometimes the sound comes in and out. The sound is very familiar: I heard the same type of rattles from my wife’s 97 Camry and my 98 contour when they were months old. Those rattles usually occurred at low speeds; eventually subsided (don’t recall length of times, though). The rattle sounds like a small piece of tree leaf caught around the windshield wiper and is brazing the windshield; similar to crumpling dried tree leaves in your hand. It also sounds like the glass/plastic from the gauges that is vibrating; though, when I press against the glass, the rattling noise continues, so that isn’t it at all. As I stated, it is faint and just started about a week ago. I’ve moved around while driving to get closer to the sound, but it wasn’t any clearer. Any ideas???
  • mazdalovermazdalover Member Posts: 3
    Hi Everyone,

    I was just wondering if anyone has had any problems with their mazda 3 GT moon roof? When you tilt it, it starts to make a noise and struggles a bit.

    Also does anyone have problem with the diver side window not automatically going down when the button is pushed. Please some body help, I think my dealership thinks that I'm being too sensitive with my car cause i'm a girl. I hope my car isn't a lemon. It's a 2004 with 5000km I bought it in Sept. :lemon:
  • ivan_99ivan_99 Member Posts: 1,681
    My sunroof tilts with a consistent speed and sound i.e. it doesn’t slow down part way.

    The drivers window also opens automatically (you need to push it to the second click, not the first). It opens fairly quickly and quietly.

    I think the Canadian GT (2.3L) is the same as the US Mazda3 S. I have a 2005 3S Sedan.

    I would be polite but persistent with the dealership. Eventually it will come off of the warranty and you may be left with an inoperable sunroof. Sunroof regulators can get very expensive.
  • mdaffronmdaffron Member Posts: 4,421
    http://www.midwestcarclub.com/mazda/manual/

    Don't say I never gave you anything.

    Meade
  • richmlrichml Member Posts: 156
    Do you think z71bill will check out the HVAC section?
  • chacobleuchacobleu Member Posts: 228
    U R THE MAN!

    BTW All - That faint rattle - GONE! Except for adjusting my steering wheel telescope/tilt, I did nothing else. If it comes back, I'll nick name it the GREMLIN
  • z71billz71bill Member Posts: 1,986
    I already have "checked out the HVAC section" - I even saved the site to my favorite places!

    Didn't see anything about solving the vinegar smell.

    BTW - the tinting really helped the weak AC system - still far from good -

    Mazda should do something to fix this defect - some posts on the "does Mazda have a future" site think Mazda should go upscale into the performance luxury segment - can you imagine this weak of an AC system in a Lexus, BMW, Acura Honda, Toyota, Chevy, Ford or Kia? Mazda should learn how to built the basics (like AC systems that actually cool the car) before trying to swim upstream.
  • autonomousautonomous Member Posts: 1,769
    Mazda 3 Service Manual
    http://www.midwestcarclub.com/mazda/manual/

    Terrific find Meade!

    p.s. the Protege / Protege5 service manual is also online: http://protege5.ugly.net
  • isda65isda65 Member Posts: 74
    Hi,

    I just purchased a 2006 Mazda 5 (AT) last July 7th. Since then I have noticed the car showing symptoms/issues/problems that I have discovered to be related to the Mazda 3. I knew to look in here first since I know for a fact that the Mazda 5 shares platform with the Mazda 3 and equally important as well is the realization that there won't be any TSB's yet for the Mazda 5.

    So far my Mazda 5 exhibits the following issues:
    1. Whine noise related to the power steering
    2. Scraping noise when going over speed bumps
    3. Loud grinding noise at stops
    4. Loud thump thump sounds on every bumps
    5. Drifting to the right
    6. Poor A/C Performance

    Would any of you be kind enough to share your copies of TSB's so I have something to show when I finally decide to go to the dealer? Item 1 is covered by TSB# 0600204, item 2 is TSB# 0901804, and item 6 is TSB# 0700504. If you have the full details of these TSB's can I ask for copies. So far I couldn't find related TSB's for items 3,4, and 5.

    Your help will be very much appreciated.
  • isda65isda65 Member Posts: 74
    Oh this is just super! Just curious would you have access to detailed TSB info as well?
  • autonomousautonomous Member Posts: 1,769
    Just curious would you have access to detailed TSB info as well?

    I used to have a link to a Protege/Mazda3 TSB site but it no longer seems to work. We need Meade (or someone else out there) to come to the rescue!
  • smariasmaria Member Posts: 279
    A quick Google search for "Mazda3 TSB" came up with web site as the first hit:

    Mazda3 TSBs

    You might find something useful there. I noticed that it lists the TSB for the steering wheel "whine" and shows the full content of that TSB (it says the noise may be caused by air trapped in the power steering fluid).
  • autonomousautonomous Member Posts: 1,769
    Thanks, smaria! That was the site that I was trying to access earlier this afternoon; I guess it was a temporary problem because I can now see it again.
  • isda65isda65 Member Posts: 74
    Yep, found it at "http://web2.airmail.net/theman/protegefaq/tsb/mazda3.html". Printing them right now.
  • mazdalovermazdalover Member Posts: 3
    Thx... I just got a call from mazda a few days ago, they had ordered a part an they are going to take a look at my window. I hope that will be the last of my problems.
    I have had nothing but problems since I bought my car. If you know anyone that wants to but a mazda in Toronto tell them not to go to Scarbrough Mazda, they have no idea what they are doing. This is only the beginning :cry:
  • autonomousautonomous Member Posts: 1,769
    I have had nothing but problems since I bought my car.
    Apart from the moonroof problem what other problems have you had?
  • gandalf17gandalf17 Member Posts: 348
    Mazdalover,

    I wish I had seen your post earlier. I would have been the first to tell you not to shop at Scarborough Mazda. Their service department is abyssmal. Go take your car a little further east to Morningside. They have well trained techs and a good service team. Failing that, make the drive north to Newmarket and/or Barrie to go to Dave Wood or NOrthwood Mazda. :sick:
  • chacobleuchacobleu Member Posts: 228
    Sorry for the late response.

    No such thing as being too sensitive about your car. And gender has nothing to do with it, either. Race car drivers are a good example. With them it’s like packing your own parachute for a jump.

    Moon roof – Can’t help you there – I don’t have that problem (yet) Glad to know that it might be fixed. Good luck.

    Auto Driver’s Window
    I’ve driven 4 cars (including the 3) with this option. All but 1 has had the same symptom at one time or another. Problem cars: 97 Toyota Camry; 98 Ford Contour; 05 Mazda 3 (just started occurring). Only our 01 Mazda MPV has not had this problem (yet); still waiting. I personally don’t like it when mechanics have to take apart my vehicle. So for something like this small problem, I would wait until the window doesn’t go up or down anymore. It sounds kind of ridiculous, but even with the other cars mentioned, not one has had a total malfunction of the driver’s window or any other window for that matter. In fact, the last time I had a total malfunction of a window (just happened to be the driver’s side) was with a manual window crank where the window had come off track. It amusing how I’ll make a big deal about the faintest of rattles/sounds and then take a ‘whatever’ approach to a quirky power window switch. I guess its all in the experience of previous ownership.

    BTW - there is a TSB for the 04 models (09-032/04 2004 MAZDA3 - POWER WINDOW INOPERATIVE) Go here for more info: http://www.edmunds.com/maintenance/maintenance.do

    With all the recent discussions about TSBs on this forum, I’m surprised no one jumped in and brought your attention to this rather insignificant detail. Or were they hinting towards you figuring it out yourself? Either way, shame on them.
  • namiboynamiboy Member Posts: 19
    well, i already documented the 'pulling to the right' problem we had with our new 3 that has been fixed, allegedly. its not doing it anymore, i'll see what happens after tire rotation. anyway, i live down here in south florida, hot as heck. the a/c in the 3 is not as good as the 2001 corolla we traded for it. its my wifes car so i havent driven it much, but she is out of town so i drove it for a couple of days and the a/c seems fine to me. i do the same thing as i always have, put it on fresh air till the car cools down some then switch to recirc. after being in the car about 10 minutes i put it on 2 to feel perfectly comfortable. it seems okay to me. like i said not exactly as good as the corolla, but nothing to complain about at all. one thing that did come to mind and i dont know if this has been discussed, but that front window is way long from top to bottom, maybe it lets in more heat? the window shade that fit in the corolla doesnt even come close to fitting the mazda 3 window. well, sorry for the ramble, but i see so many posts about the a/c i thought i would add in. oh, its a 2005, built in 05/05, 2.0L sedan.
  • mip57mip57 Member Posts: 3
    Hi,

    I've just purchased an '05 3 hatch (as mention in comment #1986), and although my reply has nothing to do with the moon/sunroof, I did purchase my Mazda3 at Scarborough Mazda. My sales rep was nice (I'll leave him anonymous), yet, he was your typical sales rep - denying any problems exist with the car, and giving you guilt trips for not buying the car on your first visit. Anyway, could gandalf17 and Mazdalover please give me their knowledge (other than what has been mentioned) about Scarborough Mazda? I'm curious to know more before my first oil change. I've heard some good things about Dufferin Mazda, yet, I'm not too sure if I want to give more business to Scarborough Maz if you guys are telling me they're lousy at everything they do - other than sell cars. Thanks. :)
  • chacobleuchacobleu Member Posts: 228
    The a/c could be improved in many different ways. I think its fine, but could use improvement. If the car’s shell was made of glass and the interior was made of a light shade, I’m sure the a/c would cool just fine. After the car has been sitting in the sun for a few hours and then the a/c is turned on, the dash area above the middle vent eventually cools down while the rest of the dash does not. This leads me to 2 conclusions: there isn’t enough insulation (may be none at all) between the HVAC vents and the top of the dash; and the black dash that’s been sitting in the sun for a few hours will radiate heat for a very long time, especially if it’s still daylight outside. Except for you southerners, this is definitely a plus for winter (NYC). I don’t think a Toyota or GM or any other a/c will cool off a black dash unless the air is directed on the top of the dash. But here again, the dash is cool but the passengers are still warm (after 10-15 minutes).

    So the argument could go something like this:
    Does the a/c unit cycle too often? Is the a/c unit too small? Is the evap too small and too close to the heater core? Could the HVAC benefit from insulation (better/more)? Yes, yes, yes, yes, but it wouldn’t matter if the interior was a made of a lighter shade.

    I estimate if all these things mentioned were to be improved at the same time, one could hang and store meat inside the 3 with the a/c running in fresh mode and the fan speed at 1 while it is sitting outside in dead of summer at 100 degrees and 100% humidity.
  • richmlrichml Member Posts: 156
    I'd add the following:
    - The 3's glass is untinted. I notice quite a difference when the sun shines on my bare arm in the 3, as opposed to when I sit in my wife's Tribute, with factory tinted glass. This could be addressed by adding after-market tint.
    - The proportionally large size of the windshield and black dash. Without a window shade, the dash and the rest of the black interior get quite warm.
    Someone on another Mazda3 forum had pics of their install of insulating material around the vents in the dash. I've seen the material for sale in home improvement stores - not certain I want to take the dash apart.
  • z71billz71bill Member Posts: 1,986
    I basically agree with your post - but it was Mazda who put the black dash in the Mazda3 - they should have also put a stronger AC system in the car - or use a different color - or add better insulation - whatever it takes to cool it off better.

    I do not however think it is correct to say - the AC is fine - it is just the color of the car that is causing the problem. The complete package needs to be evaluated together - it either has the ability to provide the driver & passengers with a cool comfortable environment or it does not. Although many owners say the AC system is OK - a few even say it is "real good" - the fact that this issue is still around after 18 months tells me that Mazda has a problem that they are not addressing. I wonder if this problem will also carry over to the 2006 model - if it does that tells me Mazda really is a third rate company - not fixing the problem on the 2004 cars is bad - putting the same junk into the 2005 is worse - but letting this thing go on into the 3rd year would be a disgrace.

    richml - I agree with your tint comment - I can tell a big difference - parked next to a dark gray Mazda3 with plain windows - and also think the tint looks much better - would be worth getting a tint job done just for the looks.
  • ivan_99ivan_99 Member Posts: 1,681
    I think my 2005 3S has an AC as good or better than my previous 03 Accord.

    But…I also notice that the sun penetrates the interior far to easily, leaving half my body hot and the other half freezing. Been putting off the tint…too busy.

    I would have liked more fan speed settings. Typically 2 is not enough, but 3 starts to freeze my head. There is also no outlet settings for air flow i.e. you cannot shut the center air flow to direct more towards the windows.

    I’m not sure what the problem is, just glad I don’t have it.
  • bigelmbigelm Member Posts: 995
    I don't have answers to your A/C problems but I will say that my SP hatchback doesn't have any problems with A/C; or anything for that matter (knock on wood).

    Maybe it's a trim thing... .which I don't think. It's all the same parts inventory pretty much.
  • autonomousautonomous Member Posts: 1,769
    Another intersting article in www.canadiandriver.com by Jim Kerr.

    One of the better studies available was done by Jan Null, Adjunct Professor, Department of Geosciences, San Francisco State University. In her report, "Study of Excessive Temperatures in Enclosed Vehicles", August 2003, she measured interior vehicle temperatures of different coloured vehicles while they were sitting in the sun. While several tests were done, here is a typical example of her results. On a 25C (77F) cloudless day, the vehicle interior temperature reached 35.6C (96F) in ten minutes, 41.1C (106F) within twenty minutes and 43.3C (110F) in half an hour. Letting the vehicle sit for a full sixty minutes, the temperature continued to climb to 50C (122F). Letting it sit longer had no appreciable increase in interior temperature.

    Both dark blue and light grey vehicles were used. We all know dark vehicles heat up more. Right? Wrong! While exterior surface temperatures may differ, Null found only minor differences in interior temperatures. Even opening the side windows 1.5 inches made little difference in the end results.
  • chacobleuchacobleu Member Posts: 228
    OK. How about INTERIOR surface temps of dark vs. light color interiors (e.g. dash)? Anyone? Anyone?
  • jbolltjbollt Member Posts: 736
    ...or isn't relative.....At least for us living in the hotter climates..notice they did that study at 77 degrees, in San Fransisco..much different than what those of us (my son has Mz3 in Tucson) experience. I don't know what the surface temp of his dash is, but i am almost sure that black dash temp is higher than a same car with a beige of light grey dash would be here when it is 112 degrees in the shade, as it has been recently. Especially during summer, when the sun is almost directly overhead, and always hitting the dash.
  • z71billz71bill Member Posts: 1,986
    Well I am not a thermal engineer -

    All I know is if I park my black car next to my silver PU truck and let them sit in the sun for a while - the hood of my black car gets so hot that (if I touch it) it will burn my hand - the silver PU - is warm - but no where close to being hot enough to burn.

    Something just does not add up -

    I will guess - the darker color absorbs more heat - stores it - so when you touch a dark surface it feels hotter than a light color that reflects the heat. The air temp above the hood of my black car & silver PU however is the same.

    I don't care what - Jan Null, Adjunct Professor, Department of Geosciences, San Francisco State University says - a car with a dark interior is harder to cool than one with a light color - again I think this is because the darker color absorbs more heat and this heat must be removed before the car feels cool.
  • kyfdxkyfdx Moderator Posts: 267,571
    If you noticed.... they measured interior temperatures, with different exterior colors... not diffferent interior colors..

    This study has been done a number of times.... and, has consistently shown that exterior colors have little to no effect on interior temperatures...

    I believe them..

    Howver, I think interior colors have a large effect.

    regards,
    kyfdx

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  • autonomousautonomous Member Posts: 1,769
    This study has been done a number of times.... and, has consistently shown that exterior colors have little to no effect on interior temperatures... Howver, I think interior colors have a large effect.
    Agreed (although I can't "prove" it). Some of the temperatures mentioned after a half hour sitting in the sun are amazing!
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