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Problem after PDK clutch oil service

Jcx said:
Robertb said:
There is a bloke with a 997TT who writes a running report in Total 911.

In the current edition he tells that he had his PDK oil changed, and disconnected the battery and left it for a bit to reset the ECU. Said it ran much better, though he did not say he had a similar fault before, just that it felt 'sluggish'.

Might be worth a go?

Hi Guys,

I am 'that bloke' and my issue was not the issue described above.

Here's what I wrote for Total911...

Ah, I'd not realised it was anyone on here!

I enjoyed your article, the point you made on the oil condition is something PDK owners (and who knows even manual cars) should defo take on board.
 
Robertb said:
Jcx said:
Robertb said:
There is a bloke with a 997TT who writes a running report in Total 911.

In the current edition he tells that he had his PDK oil changed, and disconnected the battery and left it for a bit to reset the ECU. Said it ran much better, though he did not say he had a similar fault before, just that it felt 'sluggish'.

Might be worth a go?

Hi Guys,

I am 'that bloke' and my issue was not the issue described above.

Here's what I wrote for Total911...

Ah, I'd not realised it was anyone on here!

I enjoyed your article, the point you made on the oil condition is something PDK owners (and who knows even manual cars) should defo take on board.

Thanks Robert,

I am rarely on here these days... so fortuitous i saw your post.

Certainly, fresh oil is good for the parts it lubricates and old oil is bad. Its a cheap item relatively speaking to help keep our car in fine working order.

cheers

joe
 
Jcx said:
Robertb said:
There is a bloke with a 997TT who writes a running report in Total 911.

In the current edition he tells that he had his PDK oil changed, and disconnected the battery and left it for a bit to reset the ECU. Said it ran much better, though he did not say he had a similar fault before, just that it felt 'sluggish'.

Might be worth a go?

Hi Guys,

I am 'that bloke' and my issue was......

Hi Rob,
Thanks for your message. Very interesting post. Did you also get the clutch oil samples? It s the 6 year interval service.

Thanks.

M
 
MrksD said:
Jcx said:
Robertb said:
There is a bloke with a 997TT who writes a running report in Total 911.

In the current edition he tells that he had his PDK oil changed, and disconnected the battery and left it for a bit to reset the ECU. Said it ran much better, though he did not say he had a similar fault before, just that it felt 'sluggish'.

Might be worth a go?

Hi Guys,

I am 'that bloke' and my issue was......

Hi Rob,
Thanks for your message. Very interesting post. Did you also get the clutch oil samples? It s the 6 year interval service.

Thanks.

M

My clutch oil was changed at 6 years (two years ago) and I didn't get any samples or conduct any tests. I only learned of the tests this time around.
 
MrksD said:
Hi Porsche friends,

had my car taken in for the PDK clutch oil service (6 year interval). My car is from 2009 so it is a bit late. I have had the car since summer last year.

The service was done at an independent specialist with the right OBD tool, official instructions, maintenance parts etc: Oil drain and top up between indicated engine temp, then follow OBD tool instructions and let the automated calibration procedure run.

The engine speed is now unsteady under load when accelerating approaching 2000rpm. Engine speed trace would look like a jigsaw on an oscilloscope. The car runs fine at steady state and in general above 2000rpm. To be honest it is a minor instability but definitely enough to notice. It s clearly visible on the needle and also from the engine noise at any vehicle speed in the respective gears. It feels as if the clutch is slipping.
The problem is present in all gears, manual/auto mode, sport mode etc.

There is a more fundamental PDK calibration process that can be run via the OBD tool. This was also done but it aborted half way through. Car was immobilised because of this and then taken to OPC. They re-flashed the gear box and said everything is fine. Car is running again but the problem is still there....

Any thoughts/experience on this would be much appreciated.

My car: 997C2S from 2009

Thanks.

M

You might consider taking the vehicle back to the OPC to sort it out.
Personally, with this sort of electronic wizadry, my first approach would always be a main dealer as the software upgrades and patches and equipment is often not available to indys for some considerable time. This was the case with the \Mercedes box in my daily driver - erratic shifts between 1st/2nd. An indy quoted me a figure that I discovered was the cost of them taking it to the main dealer and their costs on top for time! I took it to the main dealer and the price was less and they had all the software patches and upgrades and in 30 minutes it was done and fantastic smooth shifts.

I'm not saying this happens with indys and PDK but I'd suspect that the most up-to-date fixes, software and patches (and technical service bulletins on faults) will always be at the OPC before it hits availability at any indy.
 
cheshire911 said:
MrksD said:
Hi Porsche friends,

had my car taken in for the PDK clutch oil service (6 year interval). My car is from 2009 so it is a bit late. I have had the car since summer last year.

The service was done at an independent specialist with the right OBD tool, official instructions, maintenance parts etc: Oil drain and top up between indicated engine temp, then follow OBD tool instructions and let the automated calibration procedure run.

The engine speed is now unsteady under load when accelerating approaching 2000rpm. Engine speed trace would look like a jigsaw on an oscilloscope. The car runs fine at steady state and in general above 2000rpm. To be honest it is a minor instability but definitely enough to notice. It s clearly visible on the needle and also from the engine noise at any vehicle speed in the respective gears. It feels as if the clutch is slipping.
The problem is present in all gears, manual/auto mode, sport mode etc.

There is a more fundamental PDK calibration process that can be run via the OBD tool. This was also done but it aborted half way through. Car was immobilised because of this and then taken to OPC. They re-flashed the gear box and said everything is fine. Car is running again but the problem is still there....

Any thoughts/experience on this would be much appreciated.

My car: 997C2S from 2009

Thanks.

M

You might consider taking the vehicle back to the OPC to sort it out.
Personally, with this sort of electronic wizadry, my first approach would always be a main dealer as the software upgrades and patches and equipment is often not available to indys for some considerable time. This was the case with the \Mercedes box in my daily driver - erratic shifts between 1st/2nd. An indy quoted me a figure that I discovered was the cost of them taking it to the main dealer and their costs on top for time! I took it to the main dealer and the price was less and they had all the software patches and upgrades and in 30 minutes it was done and fantastic smooth shifts.

I'm not saying this happens with indys and PDK but I'd suspect that the most up-to-date fixes, software and patches (and technical service bulletins on faults) will always be at the OPC before it hits availability at any indy.

Yeah the Indy has taken it back to the OPC now. Waiting for an update next week.

M
 
Don't end up paying the Indy and OPC, even if its one invoice from the Indy.
OPC can and should sort it. They have access to the current up-to-date software and patches and access to Porsche Technical Dept in Germany.
 
Just thought I'd give an update on this.


The OPC Solihull gave the car back after re-flashing the PDK software and said the car behaved normal during their test drive. No issues found. Any jerking behaviour or roughness from the gear box should go away after a while due to the learning function of the PDK.

I ve driven the car for about 3 weeks now and nothing has changed. The strange engine speed roughness is still present. I tried to capture it in some videos:
Example 1 https://youtu.be/-6I9eogwjy4
Example 2 https://youtu.be/5pP3m9h7DNM
Example 3 https://youtu.be/dSvipsDD5uI

If anybody has any more ideas I'd appreciate the help a lot!

Thanks!

M :dont know:
 
MrksD said:
Just thought I'd give an update on this.

The OPC Solihull gave the car back after re-flashing the PDK software and said the car behaved normal during their test drive. No issues found. Any jerking behaviour or roughness from the gear box should go away after a while due to the learning function of the PDK.

I ve driven the car for about 3 weeks now and nothing has changed. The strange engine speed roughness is still present. I tried to capture it in some videos:
Example 1 https://youtu.be/-6I9eogwjy4
Example 2 https://youtu.be/5pP3m9h7DNM
Example 3 https://youtu.be/dSvipsDD5uI

If anybody has any more ideas I'd appreciate the help a lot!

Thanks!

M :dont know:
Very difficult to see what's going on from those vids.

You could do with having the gear indicator showing and a better mic set up IMO.

Most of all, I'd arrange to go out with the tech that told you it was OK. Let him drive and see if you can spot it. You drive and see if he can.

Presumably if a tech had a computer plugged into the car it would be possible to see what was going on with the throttle pot'...jut because you had the oil in the box changed, doesn't necessarily mean the problem is with the box...
 
Consider a different OPC?

You have a wide choice - Sutton Coldfield, Nottingham, Wolverhampton, Leicester.
 
Hi M. Very sorry to hear that you have had these problems. I experienced the same thing on my Cayman. In summary a very clunky gearbox, particularly around town or coming up to junctions, and what appeared to be clutch slip where, particularly under high torque situations, the revs fluctuated and I could hear a grinding noise from the transmission. This was worse when up at normal running temps or hot.

I came up against the same Porsche wall, namely, if it goes and there are no warning lights, it must be OK. To be fair to the OPC they worked hard, but they are only permitted a very limited number of options. They cannot do any diagnostic work and have to refer back to Germany to do anything other than a mild synchronisation. With their permission they can do a full synchronisation. Germany's response is always to follow the procedures for the fault codes. There are none of course.

Working with the OPC engineer, we did go so far as to replace the valve chest which controls the changes. (At my cost) The changes did improve and were just about acceptable, but the clutch slip remained. But Porsche will not allow clutch packs to be replaced and the OPC could find any fault. There are spare parts that can be sourced from the US, but this would have to be done through an independent and would be a voyage of exploration for all. (My local independent is Redline racing and they told me they did not do any work on gearboxes as they just have to send them back to Porsche)

So, my car worked fine as far as Porsche were concerned. if I was still unhappy, they could only change the complete gearbox. The car had done over 60,000 miles and I was looking at spending a large sum of money with no guarantee of success and I also had the feeling that other transmission components had had a hard time. At this point I came across a 981 GTS manual and decided to cut my losses and exchange.

It seems you have reached this point where Porsche are shrugging their shoulders and saying they find no fault. This seems to be the official line and it is unlikely that an OPC will buck the system for one unhappy punter who is not a big spender. I suggest that you might be lucky enough to find a second hand gearbox which would have been my next step.

Sorry this has been such a long mail. A bit therapeutic really. But I wish you well in finding a solution and would like to hear if you find one. Please pm me if you would like to discuss this as I did do quite a lot of research before biting this particular bullet.

Cheers, J
 

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