PDK - Normal or???
10-04-2015, 12:08 PM
#16
Rennlist Member
...When starting from a dead stop I would say 5% of the time it seems as if the clutch slips out of 1st and then back in (RPM jumps up a little bit and you clearly can feel no gear is engaged). It isn’t harsh when is slips back in as I haven’t noticed this when really pushing it off the line. I also have noticed it in reverse. It ONLY has happened when starting from a stop. ...
10-04-2015, 02:42 PM
#17
Nordschleife Master
I have experienced this. What I have found is that if I apply throttle very slowly over the first few seconds from a dead stop, PDK will do fine BUT if for any reason during that first couple of seconds I unknowingly back my foot off the throttle, even a tiny bit (unconsciously usually for me), PDK thinks I am going to stop so it goes to its "neutral setting". It seems to happen more when I am wearing thick leather soled dress shoes. I lose the feel. I have changed my throttle application... a bit more throttle over less time and the undesired "neutral" will not happen. If it happens to you again, just push on the throttle and PDK will reengage.
The 991 smooths all this with longer clutch feathering, more appropriate for limo-style driving. There is a PDK software update for earlier 997.2 to do that -- I do not want it.
Last edited by ADias; 10-04-2015 at 08:35 PM.
10-05-2015, 12:16 AM
#18
We'll I'm glad I'm not the only one that has had this happen. I definitely notice that when it happens I usually am feathering the throttle which sounds like can confuse the PDK computer. I also notice it happens more often in Sport mode.
Side note: I called the dealer to get quotes on changing the PDK clutch fluid. SA says $800 to do gear fluid and I remind him that it's the clutch fluid I want replaced. He then says there is only one fluid inside but he would double check. Came back and said $750 to do the clutch fluid because the fluid is "stupid expensive" but he didn't sound too confident.
:rant: I wish the advisors were better trained or equipped with more info given the price you pay for service. I don't want some guy just guessing... Im very thankful for rennlist and everyone's experience and insights.
Side note: I called the dealer to get quotes on changing the PDK clutch fluid. SA says $800 to do gear fluid and I remind him that it's the clutch fluid I want replaced. He then says there is only one fluid inside but he would double check. Came back and said $750 to do the clutch fluid because the fluid is "stupid expensive" but he didn't sound too confident.
:rant: I wish the advisors were better trained or equipped with more info given the price you pay for service. I don't want some guy just guessing... Im very thankful for rennlist and everyone's experience and insights.
10-05-2015, 03:55 AM
#19
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So yep, the PDK has two types of fluids. One is relatively straightforward to change, the other requires PIWIS and specialist tools. Its definitely a job for a Porsche Centre or larger independent.
I've just been through 3-5 months of drama with my PDK - which after a minor leak needs full replacement. There are only a very limited number of things that can be done in terms of PDK repair before Porsche recommends replacement.
If you've got a PDK make sure you have a warranty.
I've just been through 3-5 months of drama with my PDK - which after a minor leak needs full replacement. There are only a very limited number of things that can be done in terms of PDK repair before Porsche recommends replacement.
If you've got a PDK make sure you have a warranty.
10-05-2015, 11:12 AM
#20
Three Wheelin'
So yep, the PDK has two types of fluids. One is relatively straightforward to change, the other requires PIWIS and specialist tools. Its definitely a job for a Porsche Centre or larger independent.
I've just been through 3-5 months of drama with my PDK - which after a minor leak needs full replacement. There are only a very limited number of things that can be done in terms of PDK repair before Porsche recommends replacement.
If you've got a PDK make sure you have a warranty.
I've just been through 3-5 months of drama with my PDK - which after a minor leak needs full replacement. There are only a very limited number of things that can be done in terms of PDK repair before Porsche recommends replacement.
If you've got a PDK make sure you have a warranty.
10-05-2015, 02:45 PM
#21
Rennlist Member
Hey guys looking to see if you have experienced this and if it is considered normal. I recently purchased a 09 c2 cab PDK w/42k. Absolutely love the car as it is a blast to drive. PDK seems to shift smooth however I have noticed one thing that may be concerning.
When starting from a dead stop I would say 5% of the time it seems as if the clutch slips out of 1st and then back in (RPM jumps up a little bit and you clearly can feel no gear is engaged). It isn’t harsh when is slips back in as I haven’t noticed this when really pushing it off the line. I also have noticed it in reverse. It ONLY has happened when starting from a stop.
Has anyone experienced this in their PDK and do you have any technical idea what is happening?
I have searched endlessly on this only found one short thread from 2010 that 1 person said “yeah I have had it happen” and that was it. Any help or insight would much be appreciated!
When starting from a dead stop I would say 5% of the time it seems as if the clutch slips out of 1st and then back in (RPM jumps up a little bit and you clearly can feel no gear is engaged). It isn’t harsh when is slips back in as I haven’t noticed this when really pushing it off the line. I also have noticed it in reverse. It ONLY has happened when starting from a stop.
Has anyone experienced this in their PDK and do you have any technical idea what is happening?
I have searched endlessly on this only found one short thread from 2010 that 1 person said “yeah I have had it happen” and that was it. Any help or insight would much be appreciated!
OT - I had Gunter @ FJ Porsche do my PDK fluid change as well (warranty covered when I had the temp sensor replaced). The ATF clutch fluid requires PIWIS since the unit requires it to be in "fill mode" between a certain temp range (30 - 40 degC) .
10-10-2015, 12:57 PM
#22
Rennlist Member
10-10-2015, 03:03 PM
#23
Nordschleife Master
10-10-2015, 05:20 PM
#24
Nordschleife Master
Finally someone who actually understands the workings of the PDK. Self-actuating clutches perform a logic sequence. It assumes the car is driven in an assertive/sporting manner. Driven like a limo triggers all kinds of issues, such as hesitation and 1-2-1 loops.
The 991 smooths all this with longer clutch feathering, more appropriate for limo-style driving. There is a PDK software update for earlier 997.2 to do that -- I do not want it.
The 991 smooths all this with longer clutch feathering, more appropriate for limo-style driving. There is a PDK software update for earlier 997.2 to do that -- I do not want it.
10-10-2015, 09:37 PM
#25
Rennlist Member
10-10-2015, 10:20 PM
#26
Burning Brakes
PDK = 
We're just hitting 6 years on the PDK cars. Most of these cars are well below 60K miles. Most dealers have not done routine maintenance on the PDK yet (6 years or 60K miles). My local dealer has not been able to give me a PDK oil change price on several occasions and then gave me $400 one time and $1800 another time. The last time I sat with the SM the price changed three times during the conversation and I could not be told if there was a filter involved or not. However, he did tell me about the clutch adjustment procedure. After changing the (MT) transmission oil for a friend the result was a much smoother gear change. I'm hoping for this when I change my PDK oil. But in this case we are talking apples and oranges ... wet clutch oil, not transmission gear oil ... or are these shared? Another thing my dealer was not sure about! Wet clutches, transmission gears, differential, all wheel drive controller, front differential, overlap of terms! About the time I think I know this stuff, somebody says something that makes me wonder if I'm crazy! And I used to wrench for a living!!! I must be over thinking this. This is about experience and goes to factory training, or a lack thereof. I am disappointed that my local support offers me little hope, but I believe it is Germany who has dropped the ball here. I'm past 62K miles and need to have the PDK oil changed. The manual states I should change the all wheel drive controller oil (local dealer did not know this) and flush the "lifetime" coolant. The transmission oil comes at double the time / mileage. I'm inclined to do them together. There is a dealer much further from me that may know more. But my schedule has been rough and I'm not sure when I will make it there. All I can say is ... do your homework. All I can ask is ... post your results. I am sure there are many watching this post looking for answers as well. Good luck.
We're just hitting 6 years on the PDK cars. Most of these cars are well below 60K miles. Most dealers have not done routine maintenance on the PDK yet (6 years or 60K miles). My local dealer has not been able to give me a PDK oil change price on several occasions and then gave me $400 one time and $1800 another time. The last time I sat with the SM the price changed three times during the conversation and I could not be told if there was a filter involved or not. However, he did tell me about the clutch adjustment procedure. After changing the (MT) transmission oil for a friend the result was a much smoother gear change. I'm hoping for this when I change my PDK oil. But in this case we are talking apples and oranges ... wet clutch oil, not transmission gear oil ... or are these shared? Another thing my dealer was not sure about! Wet clutches, transmission gears, differential, all wheel drive controller, front differential, overlap of terms! About the time I think I know this stuff, somebody says something that makes me wonder if I'm crazy! And I used to wrench for a living!!! I must be over thinking this. This is about experience and goes to factory training, or a lack thereof. I am disappointed that my local support offers me little hope, but I believe it is Germany who has dropped the ball here. I'm past 62K miles and need to have the PDK oil changed. The manual states I should change the all wheel drive controller oil (local dealer did not know this) and flush the "lifetime" coolant. The transmission oil comes at double the time / mileage. I'm inclined to do them together. There is a dealer much further from me that may know more. But my schedule has been rough and I'm not sure when I will make it there. All I can say is ... do your homework. All I can ask is ... post your results. I am sure there are many watching this post looking for answers as well. Good luck.Unfortunately I don't have an itemized labor charge specific to this action.
10-11-2015, 12:13 AM
#28
I finally found someone who knows this stuff. Thanks Tony!
I have a solid quote for the clutch oil change (plus an unknown add on).
As has now been stated on this post, early units did not have a proper drain plug.
While mine is a 2010 C4S, it was an October 2009 build. I pulled the lower rear cover off the other night and took some pictures. I emailed my photos to the dealer at 7PM. Had an answer back in 15 minutes. It appears that the "drain plug" on my unit is inadequate.
My plastic pan has to be removed and is not reusable. Bad news ... an unknown added cost. Good news ... the filter is a part of the pan so it will be replaced. Better news ... the replacement pan should have a proper drain plug for the next time in 2017.
The new pan will be waiting for my car on Tuesday morning when I arrive! I am happy!
Joe ... I'll trade you my quoted price in trade for some of the Blue Angel pictures you took earlier today. Your GTS will have the newer pan. In case you are interested in the filter at your change, I will send that information Tuesday night.
Thanks all ... a lot of very good information and learning potential here.
I have a solid quote for the clutch oil change (plus an unknown add on).
As has now been stated on this post, early units did not have a proper drain plug.
While mine is a 2010 C4S, it was an October 2009 build. I pulled the lower rear cover off the other night and took some pictures. I emailed my photos to the dealer at 7PM. Had an answer back in 15 minutes. It appears that the "drain plug" on my unit is inadequate.
My plastic pan has to be removed and is not reusable. Bad news ... an unknown added cost. Good news ... the filter is a part of the pan so it will be replaced. Better news ... the replacement pan should have a proper drain plug for the next time in 2017.
The new pan will be waiting for my car on Tuesday morning when I arrive! I am happy!
Joe ... I'll trade you my quoted price in trade for some of the Blue Angel pictures you took earlier today. Your GTS will have the newer pan. In case you are interested in the filter at your change, I will send that information Tuesday night.
Thanks all ... a lot of very good information and learning potential here.
10-11-2015, 12:30 AM
#29
Nordschleife Master
Wayne: Great photos, telling the whole story. I suspect 2WD cars might have the easy serviceable pan even as early MY10 units.
10-11-2015, 02:18 AM
#30
I finally found someone who knows this stuff. Thanks Tony!
I have a solid quote for the clutch oil change (plus an unknown add on).
As has now been stated on this post, early units did not have a proper drain plug.
While mine is a 2010 C4S, it was an October 2009 build. I pulled the lower rear cover off the other night and took some pictures. I emailed my photos to the dealer at 7PM. Had an answer back in 15 minutes. It appears that the "drain plug" on my unit is inadequate.
My plastic pan has to be removed and is not reusable. Bad news ... an unknown added cost. Good news ... the filter is a part of the pan so it will be replaced. Better news ... the replacement pan should have a proper drain plug for the next time in 2017.
The new pan will be waiting for my car on Tuesday morning when I arrive! I am happy!
Joe ... I'll trade you my quoted price in trade for some of the Blue Angel pictures you took earlier today. Your GTS will have the newer pan. In case you are interested in the filter at your change, I will send that information Tuesday night.
Thanks all ... a lot of very good information and learning potential here.
I have a solid quote for the clutch oil change (plus an unknown add on).
As has now been stated on this post, early units did not have a proper drain plug.
While mine is a 2010 C4S, it was an October 2009 build. I pulled the lower rear cover off the other night and took some pictures. I emailed my photos to the dealer at 7PM. Had an answer back in 15 minutes. It appears that the "drain plug" on my unit is inadequate.
My plastic pan has to be removed and is not reusable. Bad news ... an unknown added cost. Good news ... the filter is a part of the pan so it will be replaced. Better news ... the replacement pan should have a proper drain plug for the next time in 2017.
The new pan will be waiting for my car on Tuesday morning when I arrive! I am happy!
Joe ... I'll trade you my quoted price in trade for some of the Blue Angel pictures you took earlier today. Your GTS will have the newer pan. In case you are interested in the filter at your change, I will send that information Tuesday night.
Thanks all ... a lot of very good information and learning potential here.