Thank you Alberto Will check, that my PDK bolt is torqued to spec. I did the full PDK 12 year service (both fluids changed) and 4WD differential fluid at Porsche Service Center 1½ year ago - no difference at all. Still clunking. And as with yours, it’s just there - not worse over time, everything works, it’s just there and I pick it up every time. I can reproduce it by giving it some gas in sport - about 1/3 to ½ throttle in 1 second and letting go of the throttle quickly, it clunks in the same way or roughly the same way, almost every time. And the car is still in the same gear when I release the throttle, so the gear is steady and not changing, it’s just coasting. Therefore I think it’s the bushing, the differential in the PDK or the 4WD differential or something else - and not clunking because of the gear changing, even though its seem so, when it usually clunks when downshifting. It also happens when I use the cruise control and stop the cruise control when driving e.g. 80 km/h - the car then let’s go of the throttle abruptly, and every second time I get the clunk and the car is still in the same gear and coasting. Every other time, it’s just smooth as you would expect. And as with you, I cant let it go - I must know why it does this 😊 It bothers me it does this. Greetings from Denmark.
@@ericvidal2885 yeah I started looking at all the different models just to be sure before I made the video. I forgot to say this was for PDK from 2009 to 2012
Hi. I’m with you on not able to letting it go. My 2010 tt has the clunks on down shifts from 4th to 3rd and to 2nb, but only when changing gears manually. No issue in automatic mode. I only have 50000 kms (just above 30000 mls), the 12 years PDK service was done a few years ago, gearbox reset/adaptation done and now lastly I had the flexdisc replaced. Function firts inserts are in as well. No difference what so ever… I’m also suspecting it to be the gearbox. However, my Porsche specialist says it works just fine. But it bothers the hell out of me. The only way to get rid of it is to give some throttle before shifting down, then the shift is almost perfect. Hi from Sweden
@@ropahydraulics my is exactly the same. It only clunks on downshift in both manual and auto but not every time. I do the same, I give a little gas to rev match and then is smooth most of the time. That’s why I think the coding for rev match on these cars is not right. Later cars got corrected
Thank you Alberto
Will check, that my PDK bolt is torqued to spec.
I did the full PDK 12 year service (both fluids changed) and 4WD differential fluid at Porsche Service Center 1½ year ago - no difference at all. Still clunking. And as with yours, it’s just there - not worse over time, everything works, it’s just there and I pick it up every time.
I can reproduce it by giving it some gas in sport - about 1/3 to ½ throttle in 1 second and letting go of the throttle quickly, it clunks in the same way or roughly the same way, almost every time. And the car is still in the same gear when I release the throttle, so the gear is steady and not changing, it’s just coasting.
Therefore I think it’s the bushing, the differential in the PDK or the 4WD differential or something else - and not clunking because of the gear changing, even though its seem so, when it usually clunks when downshifting. It also happens when I use the cruise control and stop the cruise control when driving e.g. 80 km/h - the car then let’s go of the throttle abruptly, and every second time I get the clunk and the car is still in the same gear and coasting. Every other time, it’s just smooth as you would expect.
And as with you, I cant let it go - I must know why it does this 😊 It bothers me it does this.
Greetings from Denmark.
According to Porsche handling manual you gave me, the main transmission bolt is well 89 ft/p (120Nm)!👍 and all the support bolt only 65Nm.😉
@@ericvidal2885 yeah I started looking at all the different models just to be sure before I made the video. I forgot to say this was for PDK from 2009 to 2012
@@Alberto1B Yes Alberto, we both have the same car a 2010 997.2 4S PDK!👍 Mine is dark blue with a sand beige interior.😉
Hi. I’m with you on not able to letting it go.
My 2010 tt has the clunks on down shifts from 4th to 3rd and to 2nb, but only when changing gears manually. No issue in automatic mode. I only have 50000 kms (just above 30000 mls), the 12 years PDK service was done a few years ago, gearbox reset/adaptation done and now lastly I had the flexdisc replaced. Function firts inserts are in as well. No difference what so ever… I’m also suspecting it to be the gearbox. However, my Porsche specialist says it works just fine. But it bothers the hell out of me.
The only way to get rid of it is to give some throttle before shifting down, then the shift is almost perfect.
Hi from Sweden
@@ropahydraulics my is exactly the same. It only clunks on downshift in both manual and auto but not every time. I do the same, I give a little gas to rev match and then is smooth most of the time. That’s why I think the coding for rev match on these cars is not right. Later cars got corrected