I recently bought a 1990 C4 and I am delighted with the car and would be even more so if it wasn't for the vibration that I get at speeds between 120-140kph. The garage I bought it from have gone through a long list of things they have done to try to resolve the problem but none of them have done the job. Here's the list:
Balanced the wheels both on and off the car.
Tried different tyres.
Changed one rear wheel which they thought wasn't running true.
Changed the coils and shocks on the back of the car.
Changed both drive shafts.
Replaced one control arm bush.
Took the drive shaft off tested it and reassembled it.
Any other suggestions would be gratefully received
Balanced the wheels both on and off the car.
Tried different tyres.
Changed one rear wheel which they thought wasn't running true.
Changed the coils and shocks on the back of the car.
Changed both drive shafts.
Replaced one control arm bush.
Took the drive shaft off tested it and reassembled it.
Any other suggestions would be gratefully received