958TT rear suspension dropping overnight

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Old May 28, 2023 | 12:32 AM
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958TT rear suspension dropping overnight

I’m trying to trace a leak at the rear. Car drops about 1cm overnight equally at the rear, it will go completely down over a week. I put the car into jacking mode in the hope that I’d see just one side go down but again both fell equally. It seems like too much of a coincidence for both bags to go at the same time. I want to narrow down the issue before it goes to the garage. Any pointers on what it’s likely to be and any way to confirm? Thank you for any help. Car is a 2013 958 TT with 80k on it which I’ve owned from new.
 
Old Nov 28, 2023 | 07:00 PM
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Common wisdom is it's the orings and upper strut mounts that lead to this. I have the same issue. I've ordered the parts and hope to install them in the next couple of weeks.
 
Old Nov 29, 2023 | 12:11 AM
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Thanks very much. Still have the issue, it hasn’t got worse but I need to sort it. Good news that I potentially don’t have to replace the entire strut. Do you have part numbers for the top mount and o rings?
 
Old Nov 29, 2023 | 11:39 AM
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Originally Posted by Gtrust
Thanks very much. Still have the issue, it hasn’t got worse but I need to sort it. Good news that I potentially don’t have to replace the entire strut. Do you have part numbers for the top mount and o rings?
Here's one thread: https://rennlist.com/forums/cayenne-958-2011-2018/1221386-2011-cayenne-turbo-3-corners-dropping-and-1-corner-raising-leak-in-air-suspension-2.html

top o-ring p/n N-903-677-01
top mount (p/n 958-343-018-20
 

Last edited by GT3 Chuck; Nov 29, 2023 at 11:44 AM.
Old Nov 29, 2023 | 04:10 PM
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Thanks very much
 
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