Clunking Sound in C280
I recently had the lower control arm bushings replaced in the C280 because of the popping sound and less steering stability.
But I am still hearing a clunking sound! I am beginning to think that this 'other' clunk might be transmission or driveshaft related.
I hear these popping sounds most often when stepping on the gas (more so when pushing it hard, but sometimes when accelerating moderately) from a standstill, it happens in Reverse and Drive (1st gear). I have also heard it when the trans is dowshifting when I gun it. I think I have also heard it when I'm slowing down (ie, around a corner). But I do not notice any fluctuations in RPM whenever the clunks are heard.
Also, when I hear this clunk when I step on the gas from a standstill, it is also a symptom of my "acceleration resistance" ... only now it sometimes has the added clunk to it.
I did a search and came up with quite a few transmission clunkings, but they were mostly upon deceleration or coming to a stop, while mine seems to be much more symptomatic when accelerating. But I did come up with the possibility of failing flex discs or differential mounts, and maybe even a vacuum leak.
Other than that, transmission operates and shifts just fine, and has also had great maintenance, but it's definitly been worked hard.
What do you think? Thanks for the insight.
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