[Ederlei Souza]

Hi everyone,

I bought a Mazda CX3 GT in March 2016.
The car is nice, fun to drive but since 3 months ago my CX3 start shaking while I am at a red light or when I am stopped and the engine is still running. It shakes once every 20 to 30 seconds and the RPM goes down to about 500rmp. The issue happens eventually and the intensity can vary too.
It only shakes if I am in DRIVE mode if I move to PARKING the engine run perfectly smooth.

Coincidence or not, the issue started after my car stayed parked for two weeks in an exterior parking lot during some of my vacation. I changed of the gas station, added Fuel and Engine Cleaners/Additives but nothing...

When I brought the car to the dealer; they couldn’t detect any issue using the computer. They also looked at Mazda Database and nothing similar was reported with a CX3. The dealer changed the sparking plugs but the problem continues.

I would like to know if someone is having the same or similar problem with a Mazda CX3.
Thank you,
Ed

 

[JPA]

Hi everyone,

I bought a Mazda CX3 GT in March 2016.
The car is nice, fun to drive but since 3 months ago my CX3 start shaking while I am at a red light or when I am stopped and the engine is still running. It shakes once every 20 to 30 seconds and the RPM goes down to about 500rmp. The issue happens eventually and the intensity can vary too.
It only shakes if I am in DRIVE mode if I move to PARKING the engine run perfectly smooth.

Coincidence or not, the issue started after my car stayed parked for two weeks in an exterior parking lot during some of my vacation. I changed of the gas station, added Fuel and Engine Cleaners/Additives but nothing...

When I brought the car to the dealer; they couldn’t detect any issue using the computer. They also looked at Mazda Database and nothing similar was reported with a CX3. The dealer changed the sparking plugs but the problem continues.

I would like to know if someone is having the same or similar problem with a Mazda CX3.
Thank you,
Ed

Same thing has happened to my car several times. Every time after driving a longer trip with engine in normal temperature and ambient temperature -20 °C or colder. For some reason the idle speed drops too low. it normalizes after restarting the engine. Tapping throttle pedal or revving doesn't help. I have manual transmission and this happens on neutral.

 

[NotAPreppie]

It sounds like parasitic drag on the driveline. Maybe a malfunctioning AC compressor kicking on/off or the alternator suddenly having to put out more power.

Does the problem happen more or less often when the AC is turned on or off?

Do you have anything plugged in to the power outlets that might draw a significant amount of current?

The fact that it doesn't happen in park makes me wonder, though.

 

[anchorman]

I would be persistent with the dealer.

 

[skyking]

I would be persistent with the dealer.

Yes, definitely stay on top of the dealer with this. This could be a real pain in the a$$ for them to diagnose and fix, but don't let them off the hook. I recall back in 1992, I owned a Nissan Stanza sedan.. From day one, it did exactly what yours would do when at idle. It would idle fine for a bit, then the whole car would shake as the rpm would drop to about 400 rpm for a few seconds and you'd think it was going to stall. But then it would like recover on it's own and re-stabilize at 800 rpm for another minute or so, then dip once again. This went on endlessly. It was a 5-speed so this happened whenever the clutch was pushed in. The Nissan dealer said they tried this and that, consulted their databases, spoke to regional, then corporate, then Mr. K, then the Japanese Emperor himself. Nope. Thinking back 25 years, I probably should have tried another dealer, but could not come up with what other additional things another dealer could have done. I ended up trading the car in later on that year.

Sorry for the digression. Insist this needs to be fixed.

 

[Ederlei Souza]

Thank you guys for the feedback.
If any other person is experiencing something similar with your CX3 please let me know.

I will keep in contact with the dealer.
Hope to post soon that a solution was found.

Cheers,
Ed

 

[mainemanx]

Thank you guys for the feedback.
If any other person is experiencing something similar with your CX3 please let me know.

I will keep in contact with the dealer.
Hope to post soon that a solution was found.

Cheers,
Ed

Please do tell us what happened ...

Mine too, buried in 10" of snow, had the wiggles this morning. For a few seconds, it misfired and shook a bit. Immediately shut her down, waited 30 seconds or so, restarted, no misfiere but idlled at about 1500 rpm. Repeated shutdown, wait 30 seconds, restarted ... then ticking over at about 750.

Now all seems normal.

(P.S. Not nearly as dramatic as my old Atkinson Cycle Prius, eight-clycing periodically on extra cold mornings ... here in almost O'Canada

 

[Ederlei Souza]

Hi everyone,

I have some good news about the issue with my car. (Car shakes when stopped in Drive Mode)
I took to the dealer and they assigned another technician who had more experience with investigative jobs
The tech found that the issue was related to the "Side Engine Mount"
He showed me the part that in the car and he explained that based on his experience this can happen in CX5's and Mazda 6 too.
Here is a video that I found on YouTube showing the replacement procedure.
This is exactly the same part he touched in my car.

https://www.youtube.com/watch?v=E2IptC4651Q

I hope this information can help other Mazda owners.
Thanks everyone for the feedback
Cheers,
Ed

 

[mainemanx]

In my case, it shook only once ... I wonder if there's a test one could conduct.

P.S. Where did you get your bright, cheery mechanic? Can I get her next time I take in my car?

 

[Ederlei Souza]

The service was done in my Dealer in Ottawa, Mazda Bank Street.
They were very nice and performed a good investigation job.
Everything was covered by warranty.

 

[SUNSETFOXCA]

Hi everyone,

I bought a Mazda CX3 GT in March 2016.
The car is nice, fun to drive but since 3 months ago my CX3 start shaking while I am at a red light or when I am stopped and the engine is still running. It shakes once every 20 to 30 seconds and the RPM goes down to about 500rmp. The issue happens eventually and the intensity can vary too.
It only shakes if I am in DRIVE mode if I move to PARKING the engine run perfectly smooth.

Coincidence or not, the issue started after my car stayed parked for two weeks in an exterior parking lot during some of my vacation. I changed of the gas station, added Fuel and Engine Cleaners/Additives but nothing...

When I brought the car to the dealer; they couldn’t detect any issue using the computer. They also looked at Mazda Database and nothing similar was reported with a CX3. The dealer changed the sparking plugs but the problem continues.

I would like to know if someone is having the same or similar problem with a Mazda CX3.
Thank you,
Ed

OMG I am having the same issue with my 2019 CX3 and the dealership is telling me they cant replicate this issue. Stop at red light the RPM start to drop to about 500 and the car starts shaking and then RPM go back up to 750ish and its fine. RPM can go up and down 5-6 time at a light. Dealership changed engine mounts but issue still continues....Story to be continued if they actually determine what is going on.....