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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHAOS replacememt - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Check breather tube and lower hose
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Suggestion
Just check the breather tube and lower hose for cracks or stiffness, as many people replace them due to age rather than length.
AOS replacememt - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Check breather tube and lower hose' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check breather tube and lower hose' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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AOS replacememt - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace do the line might be
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Suggestion · Original poster
I heard the design changed do the line might be to short?
AOS replacememt - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Run 2qt over
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AOS replacememt - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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Generation: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I am replacing the AOS on my 02 986 S. I bought a replacement from Porsche dealership. Do I need an extended line that feeds into AOS? I heard the design changed do the line might be to short?
Thanks.
DWBOX, perhaps is a good time to replace the accordeon hoses as well, since these age and become very brittle I know means more expense but that way you will not have to do the job twice..
The accordeon hose that goes to the top of the bank 2 is accesible by removing the cover behind the seats and you don't have to remove the intake plennum
Sorry, I don't.. but the AOS has two plastic 'accordeon hoses' a short one that connects the AOS to the hose right next to the throttle body and a long one connecting the AOS to a valve in top of the cylinder head (#4..?) right behind the driver seat.
These hoses are thin walled and will dry up with time (and heat) and become very brittle, let me try to find a P/N for you.
EDIT: The hoses that I am talking about are included on this kit
https://www
. f c p e u r o.com/products/porsche-engine-air-oil-separator-kit-vaico-99610702602kt
P/N Porsche /VNE 99610702602KT (remove spaces)
The updated AOS should still work with your original hose on an ’02. Just check the breather tube and lower hose for cracks or stiffness, as many people replace them due to age rather than length.
Putting this out here for info only (because I have it on my 996 and I’m a huge fan).
https://ultimateaos.com/
https://lnengineering.com/products/parts-and-upgrades-for-porsche-boxster-cayman-and-911-engines/the-uaos-ultimate-aos/the-porsche-987-ultimate-aos-uaos-al-complete-kit.html
Not paid, just a very pleased customer. I have this on my 996 and I believe he has it for the 986 as well. Makes any future PCV changes a breeze, and the track kit will drain any accumulated oil back into the crankcase. I’m running 2qt over on my car.
This is a source reference. Confirm exact model applicability in the original material.
