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Planet-9

AOS replacement unknown sensor floating about!

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11 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHAOS replacement unknown sensor floating about!

Leading reported evidence

Repair on my 08

Suggestion or failed attempt

No successful repair reported for this finding.

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
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Suggestion

repair on my 08

Original post Read captured discussion
AOS replacement unknown sensor floating about!
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Leading evidence: 'Repair on my 08' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair on my 08' (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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1 matching discussions · 11 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Replace 'accordion hose'

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Sorry, not a clue about the sensor you are talking about, but I would strongly suggest to replace the 'accordion hose' that connects the AOS to the block as these are 15+ year old plastic hoses..

Original post Read captured discussion
AOS replacement unknown sensor floating about!

Replace seal or you are likely

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Drop the tranny, remove the flywheel, and replace the seal or you are likely to have an oil leak.

Original post Read captured discussion
AOS replacement unknown sensor floating about!
Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Repair on my 08

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

repair on my 08

Original post Read captured discussion
AOS replacement unknown sensor floating about!

Replace 'accordion hose'

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Sorry, not a clue about the sensor you are talking about, but I would strongly suggest to replace the 'accordion hose' that connects the AOS to the block as these are 15+ year old plastic hoses..

Original post Read captured discussion
AOS replacement unknown sensor floating about!

Replace seal or you are likely

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Drop the tranny, remove the flywheel, and replace the seal or you are likely to have an oil leak.

Original post Read captured discussion
AOS replacement unknown sensor floating about!
Coverage and how to read this overview

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.

11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Planet-9: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T150451Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Strange Idle Issue followed by a horrible screech on my base '08 Cayman , led to me "popping the hood" and finding the oil filler hose compressed. Quick search online indicated AOS gone bad. so i went at it removing the vacuum hoses to the intake etc etc. The hardest part was a wiring loom covering the rear bolt to the AOS . So in the end i cut a zip tie to free it up a little and a sensor flopped out and i cant't see where it goes .. if indeed it does go anywhere. Has anyone come across this? EDIT: Help identifying connector/part The two wires to this sensor are red/blue and green/white.. any ideas? Also broke the vent pipe that goes to the bottom attachment of the AOS grrrrrr!

POST 2Original post

Sorry, not a clue about the sensor you are talking about, but I would strongly suggest to replace the 'accordion hose' that connects the AOS to the block as these are 15+ year old plastic hoses..

POST 4Original post

There was almost no way you were going to take that hose off without it breaking. I broke mine taking it off with the engine out of the car. They get so brittle that just looking at them is enough to break them. As far as the sensor, is that what the picture is? I don't recognize that and I just went through the whole engine. Do you have some more pictures of it?

POST 5Original post

Hah yeah super brittle. I have inserted another picture of it attached to the wiring loom in the car. The blue towels are the hose and the crank case hole where the AOS goes. The cable was folded as such; my thinking is that it is there for a different model AOS and that it was wrapped in situ for that purpose. I may be wrong....

POST 6Original post

German polymers: You can pay more but you simply can't get less. Someone needs to introduce the VW group to "Lexan".

POST 7Original post

Sounds like you found the unused electrical connector for the PSE option. MY2007 and up have the unused connector. MY2005 & 2006 don’t have it because PSE was not an option then. Help identifying connector/part

POST 8Original post

That would explain why I didn't recognize it. Mine's a 2006 and I definitely didn't have that.

POST 9Original post

The AOS 2.0 used in the 3.4 direct injected engine is a far better design than the one I replaced in the 986 .

POST 10Original post

Thats what I was thinking awesome news thank you!

POST 11Original post

As to the horrible screech... It may have sounded like a slipping belt, but was most likely air whistling by the rear main seal due to the high vacuum in the crankcase when the AOS fails. Drop the tranny, remove the flywheel, and replace the seal or you are likely to have an oil leak. This was the most expensive part of the AOS repair on my 08 Cayman S .

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