Need your help please. Took a road trip this weekend in my 04' TT as I often do, stopped about half way to get gas, as I started back down the road and proceeded onto the interstate as I pushed on the gas a kind of clunking noise came from what I believe would be the transmission area, it was either in between the two front seats or possibly closer to the front passenger seat. I noticed that when I eased up on the throttle the noise (clunking) would go away, never to lose power, but each time I pushed down on the accelerator a little more than gradual to pass someone, the noise would start again...louder and harder clunking the more I pressed down on the gas pedal, but again as soon as I let off from pressing down so hard it would quit. I could still maintain whatever speed I wanted, so long I didn't try and get there too quickly. Babied home. If you guys have any suggestions I'd much appreciate them, the problem is I now live in Grand Junction Co. where there are no Porsche dealers.

 

Driveshaft center support bearing is failing/failed.

 

Any idea on the cost of this part/s, also would you trust in G.M. to do the work?...it's the only reputable mechanics around my area that are certified.

 

Also...thank you for the quick response, I found what I hope and sounds like what I need. I appreciate everything SeattleTurbo Have a great day!!

 

You have a few options..


1) You can replace the driveshaft with a new one (this is the route I went.. Im not sure what the going rate is from Porsche these days... I got extremely lucky and found someone selling a brand new one on my local craigslist when this happened to me).


2) replace just the center support bearing
https://www.6speedonline.com/forums/...t-bearing.html


3) Upgrade to the Vertex center support bearing as described in this thread: https://www.6speedonline.com/forums/...ics-video.html
Personally, I believe option 3 to be the best choice, and I am going to do this with my spare driveshaft that has the failed bearing one of these days to have it ready to install when my factory one fails again.


As far as install goes, I think anyone that is mechanically competent can do it. If you search there is a DIY thread on how its done, maybe take that to the GM dealer. The only part that wasn't straight forward was aligning the center bearing correctly.. If you read the DIY you will see what I mean. I did it in the parking garage of my condos just by raising the car to special terrain level and crawling under it.

 

You too! Good luck!

 

Freaking awesome, I really appreciate you and everyone else on this forum. I Should have paid more attention as a kid when my dad was doing all the wrenching...lol...I think option 3 is the best as well. I plan on getting rid of this vehicle within the next few months for a newer one, so not wanting to spend a ton on it if possible. Thank you for the info on the DIY section...I did see that, and it doesn't sound super difficult...but a little confusing...I thought I saw a section that said to pull drive line, and another that said you could do it in place without pulling it. Either way this is why mechanics do what they do!! and why I'll will take that diagram into them for installation. Thank you soooo much again my 6 speed friend(SeattleTurbo), for all your knowledge and help you given me. Cheers

 

SeattleTurbo is sounds right on the diagnostic.

Also, make sure you check the central join and rear joint to make sure they move smoothly in, out and around in a circle because if those are bad it will ruin the new center bearing quickly. Typically, they're bad when the center bearing is bad. We have parts here as well. (The innovative Drive Shaft Clamping Center Support (DSCCS) by EPS is the only true permanent fix to premature bearing support failures. This patent-pending device was developed by a team of technicians whom over the course of 2 years were able to create what is now the end-all solution to failing bearing supports.) Here is also a great DIY tech article for the replacement to help save you money from having a shop do it. Let me know if you have any questions or need any other help.

-Luccia