Shifting from 1st to 2nd gear was rough sometimes. I checked the torque on bolt of driver's side engine mount and it was loose. It turned under 30 feet-lb. Bolt was supposed to be 70-80 feet-lb from the factory. After bolt was tightened to spec shifting became a lot smoother. I was convinced that if bolt was not tightened failure of driver' s-side engine mount bolt would have eventually resulted in a couple thousand more miles. Vehicle only had 3000 miles on it -engine would have dropped over left side driveshaft, causing loss of control of vehicle. Refer to investigation pe07015 .
2007 Mazda Mazdaspeed3 transmission complaints
Page 2 of 2: complaints 11 to 17 of 17, newest first, as owners wrote them.
I did major research on this issue on the internet. Most of the info I used was found here: http://www.mazda3forums.com/index.php?topic=68975.0;all. I started reading here just for fun and discovered that I may have a serious safety issue on my hands. The transmission mount bolt on my 2007 mazdaspeed 3 loosened at 18-20 ft-lbs of torque!! There were several people who had this same issue. No less than 5 people have had this bolt fail and their engine has fallen onto the frame of the car!! This is a serious problem. Many others have found that this bolt is not tightened to factory specs. I raised the transmission about 1 inch (to relieve pressure) before checking the torque on the bolt. I applied blue locktight and re-torqued to 75 ft-lbs. There were no metal shavings on the bolt and it looked fine. The threads inside the mount also appeared fine. I also had a strange noise from the left front driver's side of the car that started with less than 300 miles on the car!! You could feel a vibration and it was very loud and audible. It sounded like a low pitched groan or something rubbing. It was intermittent at various speeds. Oddly, applying the brakes stopped the sound and vibration, even if you just barley touched them. I took it to the dealer and they could reproduce the issue, but could not find out what the problem was. The problem lessened the more I drove the car. Even so, I always felt like something didn't feel right. After locking down the bolt to correct specs, I have noticed that everything feels much more solid now. The noises have gone away and the shifter linkage is firm again, not "spongy" like before. Since many people are experiencing this issue, I feel that mazda needs to acknowledge this very serious safety concern by issuing a re-call. This is a major issue and a big safety problem. Thank you for your attention to this matter.
I was rolling in bumper to bumper traffic and went to second gear doing maybe 15 MPH and heard a cluck. At first I thought it was reflectors on the road as that was what it seemed like. I made a turn , and as the thunk persisted, I immediatly stopped and popped the hood and observed the motor fell forward in the the radiatior. It was due to the driver's side transmission mount that came loose.
Mazdaspeed3 transmission/engine mount. These have been failing on a quite a few 2007 mazdaspeed3 cars. My dealer would not even check mine upon request. Many dealers either claim to know nothing about it, or are not giving the proper service on this. Mazda canada/USA is also claiming ignorant on this. This is a known issue as mazda had flown engineers from japan to the us to review a couple of cases, as reported by another member. This is a major safety issue as this mount holds the engine in the car, and can potentially cause injury or worse in my opinion. Btw, I work as an engineer. I had to check my bolt myself and found it to be loose.
2007 mazdaspeed 3 : transmission mount became loose and caused mis-shifts, loud clunking noises and stability degradation. Asked dealer to tighten bolt but was unable to get them too. On personal inspection bolt was loose and transmission was free to move around. After torquing bolt to spec all previous mentioned symptoms went away.
I have heard via mazda3forums.com that there have been multiple failures of the drivers side transmission mount and I decided to check my own since I have worked on cars for about 20 years...and I do not trust dealer service. I attached a torque wrench to the bolt and proceeded to get about 1/3 to 1/2 a turn out of the bolt with about 50 ft/lbs as my starting point. I then removed the bolt, covered in red located and reinstalled, torquing the bolt to 90 ft/lbs. I feel that this should be a recall and owners of this new car should not have to check their motor mounts for fear of failure when the mounts should have been done right from the manufacturer.
I had read reports of transmission mount bolt failure with my new car that had resulted in the engine falling out of the engine bay onto the ground. It was discovered that the reason this was happening was due to a transmission mount bolt that had worked its way loose until the point of breaking off. This was brought to the attention of several dealers across the USA by several owners and none seemed to show any interest in checking the problem for free, since no official service notice had come from mazda and they would not be paid for the labor of checking it out. As a preventable measure, I checked my bolt personally and hooked up a torque wrench to see how tight it was. I started at 10lbs and went up in 2lb increments. I was able to tighten the bolt beginning at 26 ft/lbs. I got almost a full turn before it bottomed out and then I set a final torque at 75 ft/lb. I then removed the bolt, covered it in red thread locker and reinstalled it again to 75 ft/lbs. I believe the torque spec for this mount bolt should be between 70 to 90+ ft/lbs so, I am under the assumption it was quite loose and certainly dangerous. This complaint refers to the drivers side transmission mount bolt.
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