Rattle or jingle sound while accelerating, what this might be?

[Ximian]

Originally Posted by Ximian

Me too, but mine is a little worse. I'm changing my flex disc and DCT transmission mounts. I'll post an update if that fixes it.

I changed the pre-cat O2 sensors and my rattling noise went away. I tried to recreate it with heavy acceleration and no luck - sounds normal now.

One of my sensors was original, made in 2010, and the other one was made in 2013.

[Merveilles]

Originally Posted by SavageE92M3

I was able to find a used 2013 dct with 56,000km for $3000cad at a reputable shop here in Vancouver, so I got a little lucky. Total with the install was $5500cad. The noise only got worse over time for me as well, I would just get it checked at a shop and get there advice first.

Damn, just had to replace my DCT. Driveshaft started bouncing violently due to output shaft wear.

[zveu7010]

Originally Posted by Ximian

I changed the pre-cat O2 sensors and my rattling noise went away. I tried to recreate it with heavy acceleration and no luck - sounds normal now.

One of my sensors was original, made in 2010, and the other one was made in 2013.

Hey, recently noticed a very similar sound happening. Most easily noticed at low rpm around mid throttle. Sort of like shaking a spray paint can ish. Car is quiet when not under load, only seems to make the noise while driving and trying to accelerate, is that similar to the noise your O2 sensor replacement fixed? It’s pretty loud in the cabin and I swear it gets louder as the car warms up.

[zveu7010]

Originally Posted by Zeesh89

Hi All,

Was hoping someone could help me with a problem. On my e92 m3, when accelerating very gently (between 1-2k RPM, I hear this little jingle sound that is coming from underneath the car, almost underneath the drivers seat. The sound can be heard on the video posted below at around 8 seconds in (you have to listen carefully to catch it). It literally sounds like a little tambourine is being shaken and I have to drive with the windows down to hear it.
The other key thing to note here is that this noise ONLY starts when the car is warm and has been driven around for 10/mins from cold). I do not hear the sound when the car is cold (driving the car when its cold is the only time I can enjoy not putting up with this noise which is frankly a little bit embarrassing). Also, the sound only comes when driving, not in Neutral revving.
I did alot of reading around on this and it seems to me like there are several potential culprits: donut gasket that connect some exhaust pipes, a bracket that's loose, a mounting thats loose, heat shield (though my mechanic confirmed no issues with this).
The cars performance is generally ok, a little bit sluggish at times but I'm not a fast driver (lots of speed restrictions where I live).

I'd be very grateful if anyone can advise or offer any similar experience and how you went about it and what the issue could be.

Thank you.

https://youtube.com/shorts/qgFbZHdGVoQ

Super curious if you ever found a solution for this. I believe I’ve got something similar going on.

[Ximian]

Originally Posted by zveu7010

Hey, recently noticed a very similar sound happening. Most easily noticed at low rpm around mid throttle. Sort of like shaking a spray paint can ish. Car is quiet when not under load, only seems to make the noise while driving and trying to accelerate, is that similar to the noise your O2 sensor replacement fixed? It’s pretty loud in the cabin and I swear it gets louder as the car warms up.

O2 sensors helped a lot, but it's still there at a high gear, low RPM, and with mid throttle. It's normal for the condition.

[zveu7010]

Originally Posted by Ximian

O2 sensors helped a lot, but it's still there at a high gear, low RPM, and with mid throttle. It's normal for the condition.

Mines pretty shocking at the moment, hope I can find a loose heat shield or something I’m def going to try the O2 sensors. Strange yours quieted down but didn’t go away.