need help on stateman

[totall]

can anyone help me the other week we got the drive shaft sent off to get balanced on the 1990 vQ statesman cause we had a virabration on the backwheels between 80km and 105km/h up hills we got it back, 2 weeks later now its still virabrating same speed up hills can anyone help us

thanxs in advanced

 

[The1985divo]

If it wasnt fixed properly take it bak and tell em to fix it properly

 

[beckrey]

i'd be checking spark plugs and leads.

i've had 2 commodores do same thing at the same sort of speed ( it would shudder from about 80 ks to about 110ks)both times it was a faulty lead.

possibly worth looking at.