Hi, first I'm new to this fantastic forums, there's a lot of stuff here and I hope somebody can help me with my problem. I own a S80 T6 1999 2.8L Turbo. Recently I noticed a small "buble" on my front driver side tire, the car was a little bit jumping at 60mph but not that much, just have to accelerate to 65mph and it was good. So last week I switch the rear tire with the front "buble" one. I did a little drive test, the shaking was worst.
Yesterday I was driving the car for a 2 hours road trip (fishing season as started), the car was vibrating more and more, now the car is vibrating from the moment I acceleterate and it never stop until I take my foot of the accelerator. If I'm on the highway I put the car on the N position at 60 mph, the car isn't shaking anymore, once I touch the acceletator the car is shaking, and when I mean shaking, I mean shaking, if I'm talking my voice will change, the ALL car is shaking badly. If I accelerate slowly, the vibration is there but not that big.

Can it be the bubble in my tire? I think it would vibrate also when I'm at 60mph on the neutral no?

All help is really appreciate!

Thank you!


Pascal

 

The bubble could cause vibration, but it should be pretty consistant, regardless of acceleration. It may be you have a bad motor/transmission mount causing more vibration from the engine, which would be more pronounced during acceleration or when gas is applied as the engine rocks due to torque.

 

I would say you have a bad Axle inner joint.