I am trying to eliminate a pronounced vibration in my MY95 XJ6. I have narrowed down the problem to either the driveshaft balance or the diff. I'm thinking (and hoping) the balance is probably the culprit but I'm having a devil of a time finding a shop that can balance the shaft. No one in the area seems to have an adaptor to handle the the jurid coupler.

Anyone know of a place that can do it in NC?

If not, anywhere else? I'd hate to ship it but will do so if I have to.

Cheers,

Allan

 

Make it for them?

 

Would if I could, but it would have to be a very precisely engineered and made part that would cost much dinero.

I did just find out about a place that can handle the shaft so will take it there today.

 

How much did it cost?
What did they do exactly?
How did you diagnose this?
What will the repair do for you?

 

This shop charges $90 to balance a two piece driveshaft, which is probably an average price.

There are a lot of different balancing machines out there but they essentially work on the same principal which is to mount the shaft into the machine such that it is able to be spun. The machine then spins the shaft at various speeds and detects any vibration and tells the operator where to place a balance weight. Good machines are capable of spinning the shaft up to 9,000-10,000 rpm. Some machines can also measure the shaft flex and u-joint tolerance and slip joint stability.

Getting the diagnosis to this point was a long, interesting and often frustrating procedure. I intend to write a post about it when I've solved the problem as I think it's a good lesson in troubleshooting. Vibration issues are quite common in these cars and often difficult to correct. I believe a methodical approach gives you the best chance to fix the problem.

I should be able to pick up the shaft later today or tomorrow and with a bit of luck and a following wind, it will cure the vibration issue If not then my attention will switch to the diff.