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Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHStrange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

Leading reported evidence

Clean maf and it seems

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 · Original poster
Changed the plugs and cleaned the MAF and it seems to be just the same.
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

Frequently discussed work

Check any pending codes

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
Are you able to connect an OBD2 code reader to the car's OBD2 port and check for any pending codes?
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

Read full discussion summary

Leading evidence: 'Clean maf and it seems' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check any pending codes' (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 · 2 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Replace plugs

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 · Original poster
Changed the plugs and cleaned the MAF and it seems to be just the same.
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

Check any pending codes

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
Are you able to connect an OBD2 code reader to the car's OBD2 port and check for any pending codes?
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

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.

Check any pending codes

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
Are you able to connect an OBD2 code reader to the car's OBD2 port and check for any pending codes?
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

Clean maf and it seems

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 · Original poster
Changed the plugs and cleaned the MAF and it seems to be just the same.
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

Replace plugs

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 · Original poster
Changed the plugs and cleaned the MAF and it seems to be just the same.
Original post Read captured discussion
Strange rev drop issue - Page 1 - Boxster/Cayman - PistonHeads UK

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.

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

PistonHeads: 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 all Bit of a strange one on my 987.2 Cayman S. I've been suffering a bit of stumble/hesitation at partial/low rev throttle. Changed the plugs and cleaned the MAF and it seems to be just the same. Full throttle and/or high revs are fine. Just playing around today and whilst the car is staitionary. If you gently Rev the engine with constant throttle it will pull fine to circa 2.5k but then drop back to 2.1k ish whilst still keeping the same throttle position. You then have to push through to get past this point. Variocam solenoid/actuator? Bit does seem a BT lumpy at idle and at steady engine speeds when staitionary. Any other thoughts?

POST 2Original post

Try an e-Gas calibration. Steps should be in the owners manual. For my cars the procedure is with the key off and your foot off the gas pedal during this process then turn the key on. Leave it on for at least 60 seconds. Turn the key off for at least 10 seconds. Done. The next time the engine is started the e-Gas calibration is complete. Are you able to connect an OBD2 code reader to the car's OBD2 port and check for any pending codes? Doesn't read like a Variocam Plus problem, but who knows? When one went out on my 2002 Boxster the engine idle started going down to nearly 500 RPMs then up again to near normal and back down and so on. No CEL and no active codes, but one pending code: P1431 IIRC.

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