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  1. Sometimes Rough Idle when Warm

    2004-2009 Mazda3 Discussion
    Hi, I have a 2005 Mazda 3 S 2.3. I bought it around 2-3 months ago with 159k miles on it. I love the car and improving everything piece by piece. Right now I have a idle issue. When warm sometimes it will idle down below 750 with shaking. Things I done: - Clean throttle body front and back -...
  2. 2012 skyactiv 2.0L, rough idle/misfire

    2010-2013 Mazda 3 Engine and Performance
    Hi all, new here trying to diagnose a problem. 2012 Mazda3 Skyactiv 2.0L vin 7, bought brand new December 2012. Started running a little rough around 75k miles and dropping mileage. Changed plugs to NGK Iridiums around 80k miles. Mechanic told me that one plug was so shot, it was barely even...
  3. rough RPM on cold engine

    2004-2009 Mazda3 Discussion
    Need Help, I have 2005 Mazda 3 - 2.3 L - About 3 weeks ago it started running rough and I assumed it is bad gas - even though I fill up from the same Company owned gas station. 2 weeks ago car engine stopped while I was at a signal - gave it about 5 sec and turned it back on and it started...
  4. Mazda 3 rough idle in drive

    2010-2013 Mazda 3 Engine and Performance
    Hi guys I need your advice. So I have a 2011 Mazda 3 2.5. It idles fine when in park or neutral ( at 750 RPM ), but as soon as I put it into gear the RPMs keep dropping, car starts shaking and feels like it will stall out. I have cleaned the TB and replaced spark plugs already. Any advice is...
  5. 2012 mazda 3 real bad rattling and rough riding over bumps/uneven road

    2010-2013 Mazda 3 & Skyactiv Suspension & Handling
    Hey there! So I have a 2012 mazda 3. I have been having issues with the rear of the car. My car has 124,000 miles on it. It rattles severely when I go over the smallest bumps or uneven roads and it throws the car around like I am driving a semi truck. I have had it in the shop several times...
  6. Rough transmission when cold

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    On my auto, I notice an issue where the torque converter has a bit of a hit when it locks up under gentle acceleration shifting into second. It's typical canadian winter conditions here and happens when the car is cold. If i get it nice and warmed seems to go away and act normal mostly. Anyone...
  7. 2017 Mazda 3 2.5 rough automatic shift

    2014-2018 Mazda 3 Skyactiv Discussion
    Hi guys, I have about 1000 miles on my 2017 Mazda 3 2.5 with an automatic transmission. I was wondering if anyone else has noticed a rough or slight delayed shift into 5th gear? All other gears shift butter smooth just not 5th gear. The rough 5th gear shift under normal acceleration occurred...
  8. Rough gear changes

    2010-2013 Mazda 3 Engine and Performance
    I noticed that my 2013 skyactiv has been shifting pretty rough on cold starts in the first 3 gears. I always wait for my car to warm up and the coolant temperature light to go off for a little over 2 minutes. What could be the problem? Has anyone else had this issue?
  9. Rough Idle 2004 Neo

    2004-2009 Mazda 3 Performance & Mods
    Hi everyone my daughters bought herself a 2004 Neo manual sedan. It seems fine to me but everyone and then it idles rough ever so slightly. It may be nothing but to help find the cause I'm looking at getting one of those gadgets that reads and able to reset the engine codes . From little reading...
  10. Rough Ride for anyone else?

    2014-2018 Mazda 3 Skyactiv Suspension & Handling
    I drove a 2013 Honda Civic the other day and noticed how smooth the ride is compared to my '14 Mazda3. My mazda feels very stiff in comparison. The Civic goes over the bumps and imperfections on the road very nicely and didn't feel going over them. However, in my Mazda, I feel every bump and...
  11. Help Rough Idol

    2010-13 Mazdaspeed 3 Engine and Performance
    Hello all I was hoping you can help me with this issue. let me start by saying I have a 2010 Speed 3 only mods I have are Cobb SF intake and the access port re-flash for the SF intake. Now my car is idoling really rough and its throwing off random misfires left and right. any suggestions?
  12. Rough Shifter action question

    2014-2018 Mazda 3 Skyactiv Discussion
    I remember that when test driving the mazda3, one of things that impressed me was the clean precise shifter action, ...........or so I thought. It's been a month and it seems to me that every now and again, at certain shift sequences (such as 1->2), as the shifter crosses the neutral...
  13. Rough idling

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    Hi guys, I picked up my MZ3SGT about 1.5 weeks ago. I've notice that the engine kinda idles rough while im at a stop light. Seems like the engine shakes and vibrates occasionally. I can feel it in the steering wheel and pedals. Is it normal as there still needs to be a break in period? I...
  14. Rough Morning

    2010-2013 Mazda 3 & Skyactiv Discussion
    On my way for a coffee today, a lady stops very abruptly in front of me. End result is I need a new grille. There appears to be absolutely no other damage to my car (lucky) and the grille was like $130 so no big deal. The Olds Alero that I hit has paint flaking off the rear bumper, no other...
  15. HELP! Rough Idle and shut-off

    2010-2013 Mazda 3 & Skyactiv Discussion
    Went out to get lunch at work today, Started car up, and seemed to idle a little rough. I went out, drove around, put gas in it, went back to work and let it sit. Went out in the afternoon to check on it. The first time I tried to start it up, it puttered, started, rpm's went up to about...
  16. Really rough ride, caused by suspension or bad tires?

    2010-2013 Mazda 3 & Skyactiv Suspension & Handling
    I know Mazda 3's are supposed to have a tight sport suspension, and it does handle great, but my cars ride feels terrible. I had the stock yokohama avid tires rotated at 7,500k. and soon after I started to notice it was riding very rough. Started feeling every little bump and hump in the road at...
  17. 2010 Mazda 3 post alarm/starter install rough gear shifter?

    2010-2013 Mazda 3 & Skyactiv Audio & Electronics
    Hey all, I just had my 2010 Mazda 3 GX Sedan Automatic installed with an aftermarket Compustar Remote/Starter 2way system. Everything on the car and the alarm works perfectly fine, however I have an issue that I have not found any other post about: When I shift gears the gear shift lever is...
  18. Rough shifting

    2010-2013 Mazda 3 Engine and Performance
    Just got my Mazda3 iTouring 5-speed Manual two weeks ago. Admittedly I am new to MT's but over the course of few days, I got used to it. However, I am noticing that when I shift between gears, sometimes the gears shift smoothly (two "clicks" or bumps between gears) but sometimes the shifting is...
  19. Rougher ride w/ low-profile tires?

    2010-2013 Mazda 3 & Skyactiv Wheels and Tires
    I have 18" 5Zigen ZR+ wheels with 225/40-R18 Yokohama S-Drive tires. I've never driven a car with 40-series tires before. I'm noticing that the ride is a bit rougher than with the stock rims and tires. I swear that I can feel every bump and crack in the road as I drive over it. I'm also...