Planet-9

08 CS endless nightmare

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Original source

5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH08 CS endless nightmare

Leading reported evidence

Replace (and entire oil flooded intake system

Performed · outcome unconfirmed

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 performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
replaced (and entire oil flooded intake system cleaned) as well as Oil filter, topped off all fluids.
Original post Read captured discussion
08 CS endless nightmare

Frequently discussed work

Check engine control unit memory content

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
(possibly bc of a replaced aftermarket head unit) and C401 Check engine control unit memory content.
Original post Read captured discussion
08 CS endless nightmare

Read full discussion summary

Leading evidence: 'Replace (and entire oil flooded intake system' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check engine control unit memory content' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 5 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Replace aftermarket head unit) and c401

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
(possibly bc of a replaced aftermarket head unit) and C401 Check engine control unit memory content.
Original post Read captured discussion
08 CS endless nightmare

Use some of the car settings so it had

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
was used for some of the car settings so it had to talk to those parts of the car.
Original post Read captured discussion
08 CS endless nightmare

Check engine control unit memory content

Suggestion or failed attempt

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
(possibly bc of a replaced aftermarket head unit) and C401 Check engine control unit memory content.
Original post Read captured discussion
08 CS endless nightmare

Check engine immediately came back

Suggestion or failed attempt

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
I cleared and drove around a little bit, check engine immediately came back but this time with a more clear P1095 Air Mass Ahead of Throttle Valve- Implausible.
Original post Read captured discussion
08 CS endless nightmare

Frequently discussed actions (8)

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

Check engine control unit memory content

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
(possibly bc of a replaced aftermarket head unit) and C401 Check engine control unit memory content.
Original post Read captured discussion
08 CS endless nightmare

Check engine immediately came back

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
I cleared and drove around a little bit, check engine immediately came back but this time with a more clear P1095 Air Mass Ahead of Throttle Valve- Implausible.
Original post Read captured discussion
08 CS endless nightmare

Clean mass air flow sensor

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
Interesting, I know the MAF had been giving a fault code beforehand so they cleaned it, hopefully it's not faulty.
Original post Read captured discussion
08 CS endless nightmare

Clean the entire intake system including the maf

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
Now I know that the mechanic cleaned, or at least charged me for cleaning, the entire intake system including the MAF.
Original post Read captured discussion
08 CS endless nightmare

Replace (and entire oil flooded intake system

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
replaced (and entire oil flooded intake system cleaned) as well as Oil filter, topped off all fluids.
Original post Read captured discussion
08 CS endless nightmare

Replace aftermarket head unit) and c401

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
(possibly bc of a replaced aftermarket head unit) and C401 Check engine control unit memory content.
Original post Read captured discussion
08 CS endless nightmare

Set about trying

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
After getting that this month I’ve set about trying to fix this poor car, and just did about $3500 at the local
Original post Read captured discussion
08 CS endless nightmare

Use some of the car settings so it had

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
was used for some of the car settings so it had to talk to those parts of the car.
Original post Read captured discussion
08 CS endless nightmare

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.

5 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: 20261028T003752Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

First time posting and I wish it was with a better first-time Porsche experience, but 4 months ago my nightmare began with a PPI’d 08 CS I bought from a dealer that neglected to mention MULTIPLE serious issues (PPI guy must’ve been blind as well) and then promptly abandoned his business and withheld the title! After getting that this month I’ve set about trying to fix this poor car, and just did about $3500 at the local Porsche specialist having the AOS replaced (and entire oil flooded intake system cleaned) as well as Oil filter, topped off all fluids. Picked up and drove home with no issue, but transmission shifting feels a bit off perhaps. I started it up and went for a very brief drive today (48 hours later) and very quickly engine light comes on. Code reader had a few codes that were just Communication PCM (possibly bc of a replaced aftermarket head unit) and C401 Check engine control unit memory content. I cleared and drove around a little bit, check engine immediately came back but this time with a more clear P1095 Air Mass Ahead of Throttle Valve- Implausible. Now I know that the mechanic cleaned, or at least charged me for cleaning, the entire intake system including the MAF. Any ideas as to what could be causing the continuation of my nightmare? XD

POST 2Original post

The mechanic may have either left something loose or damaged the MAF while cleaning it. I'd be revisiting the mechanic. As far as the communication errors - yep - you get those if you have an aftermarket unit installed. The PCM was used for some of the car settings so it had to talk to those parts of the car. Since it's no longer there - errors are generated when the parts can't talk to it. Happily - those errors do not set an OBD -II error code (which would turn the CEL on.) Also - welcome to Planet-9, the Friendly Porsche Forum. When you have a moment, please go visit New Member Introductions and introduce yourself and your Porsche. Pictures of the car are nice too..

POST 3Original post

Interesting, I know the MAF had been giving a fault code beforehand so they cleaned it, hopefully it's not faulty. I'll be sure to have them look into it!

POST 4Original post

@987dot2 I was confused by your handle since your question seems to be regarding a 987dot1 (2008).

POST 5Original post

It's a long story but I do actually have both a 987.1 and a 987.2 ... Not on purpose but here we are!

This is a source reference. Confirm exact model applicability in the original material.