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lambda problem

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHlambda problem

Leading reported evidence

Check cars every year

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Suggestion · Original poster

I�m from sweden and we have to check the cars every year.

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lambda problem
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Leading evidence: 'Check cars every year' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check cars every year' (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 · 5 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Check cars every year

No successful repair reported for this finding.

0
Reported fixes
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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 · Original poster

I�m from sweden and we have to check the cars every year.

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lambda problem
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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.

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

  • Rennlist: 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: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi everyone...after taking my car out for the summer i have some lambda problems. Is there a way to measure the lambdas on my car? its a 996 C2 3,4l -98.

POST 3Original post

You can read the AFR from your O2 sensors with a scanning tool. The limitation is the slow refresh rate and the fact that you're dealing with narrowband sensors. The best option is to pick up a wideband oxygen sensor and either mount it seperately or use one with both wide and narrowband output and mount it in the stock location. You would then send the narrowband output to the ECU to keep it happy while logging the wideband output. How do you know you have a problem?

POST 4 / ORIGINAL POSTEROriginal post

I�m from sweden and we have to check the cars every year. The car runs and sound perfect but when they measure the exhausts at 2500 rpm�s it says the lambda is a little to high. I haven�t had the car to a porsche shop so don�t know i i have any default codes yet.

POST 5Original post

Make sure to fully warm the car up prior to the measurement. Assuming you did that, the most likely culprits are either a bad oxygen sensor or a dirty MAF.

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