Section : Rear Axle

Rear end vibration

Posted By : Ian Hewlett, 09-Apr-2003, 06:52pm

• Rear end vibration

  Posted By : Ian Hewlett, 09-Apr-2003, 07:03pm

  Hi again,
  I know you have read this before, but please humour me! The vibration starts at around 50 mph and appears to come from behind me as i`m driving. I have jacked up the back end and had the car indicating 50 mph, the only noticeable movement or vibration is the back wheels seem to move up and down slightly. I removed the wheels and it was still there. To reproduce the vibration do I need to support the car on the supension or on the chassis as I have done? I can`t see any vibration in the prophaft so I don`t think its that. Any help would be greatfully recieved.
  
  Ian

  • Rear end vibration

    Posted By : Nigel Gibbins, 09-Apr-2003, 09:02pm

    Ian,
    
    First I'd feel the need to point out that running a car while the rear is jacked up is VERY dangerous. If you 'have' to do it please make sure you are using axle stands.
    
    It sounds to me that the propshaft is you culprit. I wouldn't expect to 'see' any vibrations from it though as it will be transimitted the the chassis throught the diff anyway. As a precaution you should remove it and check it for wear.
    
    Can you drive through the vibration? If you get about 60 does it go away? If the answer is yes then the propshaft is definaltey to blame.
    
    NiG
    http://www.niginthecar.net