Have not seen this written about before:

1990 300E. I replaced the front and rear flex disks. Did not replaced bearing or carrier as I could detect no play there.

Symptom before were clunking due to mucho play in front disk. Rear disk was OK but I replaced it anyway, since I was there.

Had no vibration before, just clunking.

Now, no clunking but I have a vibration.

In the morning, when the car is cold, there is a very obvious driveline vibration from 35mph up. Only when coasting or light throttle. As the car warms up it fades away and stays away as long as the car does not cool completely off again.

???

Thanks

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2012 E350
2006 Callaway SC560