9Y0 common problems and failures
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From: linker Fahrbahn
9Y0 common problems and failures
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@icemang @garrett376 @John Mclane @911SLOW @hacker-pschorr
This thread is a compilation of known 9Y0 problems and failures. Solutions may or may not exist.
- .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper
- .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
- controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
- oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
- .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
- early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty. Late .1 and all .2 use AGM batteries.
@icemang @garrett376 @John Mclane @911SLOW @hacker-pschorr
This thread is a compilation of known 9Y0 problems and failures. Solutions may or may not exist.
- .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper
- .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
- controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
- oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
- .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
- early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty. Late .1 and all .2 use AGM batteries.
Last edited by chassis; Apr 24, 2024 at 03:22 PM.
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ADMIN REQUEST: Please make this a sticky as in other forum sections. Thanks!
@icemang @garrett376 @John Mclane @911SLOW @hacker-pschorr
This thread is a compilation of known 9Y0 problems and failures. Solutions may or may not exist.
- .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper
- .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
- controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
- oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
- .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
- early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty
@icemang @garrett376 @John Mclane @911SLOW @hacker-pschorr
This thread is a compilation of known 9Y0 problems and failures. Solutions may or may not exist.
- .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper
- .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
- controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
- oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
- .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
- early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty
Thread Starter
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Joined: Nov 2019
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From: linker Fahrbahn
https://rennlist.com/forums/cayenne-9y0-2019/1405225-9ya-9y0-cayenne-cooling-issues.html
https://rennlist.com/forums/cayenne-9y0-2019/1372288-2020-cayenne-water-pump-and-vacuum-system-replacement-cost.html
Last edited by chassis; Apr 22, 2024 at 11:00 PM.
Racer
Joined: Mar 2017
Posts: 477
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From: left lane
I have had a failed oil separator. I was about 450 miles from home. I was please that they were able to get me a (crappy) loaner.
https://rennlist.com/forums/cayenne-...separator.html
https://rennlist.com/forums/cayenne-...separator.html
Thread Starter
Rennlist Member
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From: linker Fahrbahn
Vapor separator failure can generate CEL and misfire.
https://rennlist.com/forums/cayenne-...r-failure.html
https://rennlist.com/forums/cayenne-...r-failure.html
Burning Brakes
Joined: Dec 2018
Posts: 1,043
Likes: 357
ADMIN REQUEST: Please make this a sticky as in other forum sections. Thanks!
@icemang @garrett376 @John Mclane @911SLOW @hacker-pschorr
This thread is a compilation of known 9Y0 problems and failures. Solutions may or may not exist.
- .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper
- .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
- controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
- oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
- .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
- early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty
@icemang @garrett376 @John Mclane @911SLOW @hacker-pschorr
This thread is a compilation of known 9Y0 problems and failures. Solutions may or may not exist.
- .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper
- .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
- controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
- oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
- .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
- early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty
Thread Starter
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From: linker Fahrbahn
About the emphasized language quoted above - I believe what’s stated is incorrect. From what I’ve read in other posts in this forum, empirical evidence suggests the problem may be due to a defect in the transfer case. At least one member reported resolving the problem by his dealer replacing the transfer case under warranty. A previous working theory of the problem’s cause was due to a transmission mount. Some members reportedly replaced the mount, to no lasting effect. Glad to be corrected if I’m wrong, but to my knowledge no member has resolved the 6th gear vibration problem by replacing or repairing any part of the transmission or torque transfer clutch.
There is no definitive root cause, we agree.
Transmission mount replacement is not the problem or the solution, we agree.
The problem is believed to be rooted in the wet multi-plate clutch device.
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Burning Brakes
Joined: Dec 2018
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Would you be able to edit your original post to make this clear for others who, like me, are not as deeply steeped in the inner workings and parts nomenclature of the car? It would help those of us, seeing your post, in explaining to a dealer what may be the cause of and possible fix for the vibration problem.
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8th Gear
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Thread Starter
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Joined: Nov 2019
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From: linker Fahrbahn
Same with lurching/surging, late .1 seem to have fewer reports of it.
PSCB brakes are discontinued to my knowledge.
LiFePO4 batteries are discontinued since late .1.
No change on oil vapor separator or water pump updates.
Last edited by chassis; May 20, 2024 at 09:18 PM.
Burning Brakes
Joined: Dec 2018
Posts: 1,043
Likes: 357
I have a 2022. I can say for certain the 6th gear vibration is NOT fixed. It is very noticeable in my car. However, the lurching/surging issue IS fixed. Shifting is very smooth.
8th Gear
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