Tranny flush in March. I may have left it too full(?), since it sure is now. (daughter's car on M.Vineyard. I haven't seen it since March.) The "buzz" reminds me of a stiff U-joint, as I recall it. Can be felt in the butt and accellerator. Could excess fluid lead to such a symptom? (no sign of excessive fluid loss at rear--for a 205K car)
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Bruce Young, 940-NA, many 240s (one V8), '73 142, '71 144 (ex circle track car in CT), '67 144 (new), used 122 from '63 to '67

I had the same or kinda same vibration, on my 240DL.

I chased this around for two weeks and when the dust setteled, it was the center bering for the drive shaft. The spring that centers the shaft sprong out of the rubber (car sat for a few yers before I receved it), and rubbed on the drive shaft. The faster the shaft turned the louder the sound and the worse the vibration got. The bering was bad and rough as well. This was whene the car was moving at any speed.

Another thing your post title says (buzzing vibration at idel,) if you mean the car, standing still at idel and it vibrates, it could be a few of the turbin fins inside the tork converter, as a few (3 or more) of the fins bad/broken will cause a vibrating engine at idel and gets worse as speed increases.

I worked at a auto MFG plant building tork converters, and we where aloud upto 3 fins to NOT be brased, any more than that and the torky was dismissed and melted down to seat belts and such.

At any rate, hope you figure it out. Me I spent alot of cash chasing my vibration around, tires, u-joints, wheel berings, and never thought of the center bering. GOOD LUCK!


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Kevin * HONDA spanking,1985 240DL * VOLVO ON!!!!

Thanks Kevin, Yes, it can be felt at idle. Haven't really tried revving it. But it is very noticeable in the right foot when pulling away from a stop and at road speed. Will get fluid level right today, but thats about all I can do here, away from home.
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Bruce Young, 940-NA, many 240s (one V8), '73 142, '71 144 (ex circle track car in CT), '67 144 (new), used 122 from '63 to '67