Thread: 01 GTP shakes while accelerating. HELP!

I have an 01 stock GTP. It has recently started shaking while under moderate acceleration especially when I have several people in the car. Any ideas on what might be causing the problem? THANKS!

Originally Posted by Sushamouf

Cv axle. Just replace both.

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When I got new tires a couple months ago Bell Tire did mention I had a CV Joint going out. They also mentioned a tie rod needing to be replaced. Would that be at all related and cause the symptoms as well? Out of curiosity why do you recommend replacing both?
Thanks

Originally Posted by Sushamouf

Tie rod end most likely isn't contributing to the oscillation, but still worth replacing then doing alignment. When the CV joint wears out it can have play in the joint, so when you apply torsional load to the joint/shaft it creates an unbalance and thus your wobble. But when the load is reduced on the axle, it returns to center and is balanced. That is why it only shakes on accel. I had the same issue when I purchased my GTP. I recommend both, just because I like to do thi gs in pairs. Chances are if one is going bad, the other is on it's way.

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Any recommendations on what brand of cv axle? What am I looking at for the pricetag of this fix? Would you recommend me doing this myself? Any good writeups that you know of?

Originally Posted by Sushamouf

I would recommend acdelco. Reman shafts are kinda luck of the draw. Not sure on price. If you can do your own brakes, you could probably tackle this with a write up. You could try the search, i don't know of any write ups off hand.

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Alright thanks. I appreciate the help!

how do you check the cv axles i changed the drivers side awhile back and now have a vibration again

You can visually check them by looking at the boots on the inner and outer joints. If they are wet or slinging grease everywhere then that's the one to change. The only way I found I had a bad pass. side inner joint was by accident. I leaned on the shaft while doing something else under there and heard a clunk. Pressing down on the shaft showed I had play in the inner joint that was causing a horrible vibration on accel and any speed above 50.

Originally Posted by FordMan77

You can visually check them by looking at the boots on the inner and outer joints. If they are wet or slinging grease everywhere then that's the one to change. The only way I found I had a bad pass. side inner joint was by accident. I leaned on the shaft while doing something else under there and heard a clunk. Pressing down on the shaft showed I had play in the inner joint that was causing a horrible vibration on accel and any speed above 50.

My mechanic thinks that it is a back motor mount that is causing the CV axel to be off causing the vibration. what do you think about this?

It could very well be the motor and trans. mounts. If it is sitting lower than required the axle geometry will be off, thus causing a vibration. If you take a look at your motor mount (under the balancer area) and see a bunch of black liquid goo then your mount has failed, as they a fluid filled from the factory.

FYI- There is no "back" motor mount on these cars. There is a motor mount up front under the balancer, a trans mount on the drivers side (under the trans, duh, lol..) and the 2 dogbone mounts you see when you open the hood.