In a message dated 96-11-07 15:58:13 EST, 1217@mn2.lawson.lawson.com (Paul
Holmdahl) writes:

<< I have the same problem in my 86 Syncro Eric.  My assumption (untested)
 was 
 an tire out of balance.  ?? >>
Remove the center drive shaft.  If vibration goes away, that is the problem.

Dennis H