I am very puzzled, had this happen first an year ago:
- winter conditions,
lots of water on the road.
- normal cruising
- during light (~10%) throttle, around 2000-2300 RPM.
- independent from the speed
Loud rattle and noticeable vibrations in the chassis.
MPPSK + Akrapovic Downpipe
Today it was snowing, slush on the road. Same thing. Previously I though it is coming from the front-right wheel somehow, during light acceleration (never without throttle), now I am pretty sure it is related to the exhaust, maybe the downpipe connections... still front-right direction or under the car.
It is not easy to reproduce, it doesn't happen every time, but often enough in those conditions. I wasn't able to record it unfortunately.
2000-2500 RPM is where the exhaust is the loudest and has some drone, but that rattle is something that comes in addition, most likely related...
It sounds as if a thick sheet metal or plastic is being bombarded with wet snow. One feels the vibration from the rattle. It fades away as RPMs increase above about 2500.
If it is the exhaust however, I cannot understand the link to water on the road / slush!?!?
Any theories or experience??