911uk

irregular idle/running rough

Add to repair workspace

New repair projectOpen repair workspace

Original source

4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHirregular idle/running rough

Leading reported evidence

Clean airflow meter

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
I've heard of people mentioning about cleaning the airflow meter but don't know any more than that, sorry.
Original post Read captured discussion
irregular idle/running rough

Read full discussion summary

Leading evidence: 'Clean airflow meter' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean airflow meter' (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 · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Clean isv (diy section of p-car.com)and see if it helps

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
May be you can try cleaning the ISV (DIY section of p-car.com)and see if it helps.
Original post Read captured discussion
irregular idle/running rough

Run far worse than i've been

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 · Original poster
I am so frustrated by this, being told by specialists there's nothing wrong with the car when clearly it is running far worse than I've been used to.
Original post Read captured discussion
irregular idle/running rough

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.

Clean airflow meter

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've heard of people mentioning about cleaning the airflow meter but don't know any more than that, sorry.
Original post Read captured discussion
irregular idle/running rough

Clean isv (diy section of p-car.com)and see if it helps

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
May be you can try cleaning the ISV (DIY section of p-car.com)and see if it helps.
Original post Read captured discussion
irregular idle/running rough

Run far worse than i've been

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 · Original poster
I am so frustrated by this, being told by specialists there's nothing wrong with the car when clearly it is running far worse than I've been used to.
Original post Read captured discussion
irregular idle/running rough

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.

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

911uk: 1 discussions

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

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

Outcome without a verified action link
Both independants and myself (because JZM failed to reconnect it properley) have tried the ISV route, made no difference whatsoever.
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned
NEARBY ACTION · LINK UNVERIFIED
May be you can try cleaning the ISV (DIY section of p-car.com)and see if it helps.
Nearby source post

Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Help, My 993 c2 has taken to idling at between 1200-1400 rpm once it warms up, this makes driving in traffic a chore. Combined with this it appears to be running rough or at least have a mechanical vibration once over about 50mpf(not tyre related) Now heres the problem... The car has been to JZ Machtech, who could find no fault and said it drove well(it doesnt at the moment) The car is at another independant who advises more or less the same, ie the diagnostic shows no fault at all at there is nothing apparent wrong, latest suggestion is a 'tired' air flow meter. I am so frustrated by this, being told by specialists there's nothing wrong with the car when clearly it is running far worse than I've been used to. Apologies for the long missive but any ideas??? Migration info. Legacy thread was 25711

POST 2Original post

Does th idle go up and down for a bit? or is it just faster than before? mine "hunt" for a while until the engine's warm, might be the ISV needs cleaning or the airflow meter fault, but not bothered me enough to do anything about it yet. May be you can try cleaning the ISV (DIY section of p-car.com)and see if it helps. Migration info. Legacy thread was 25717

POST 3 / ORIGINAL POSTEROriginal post

No once the car has warmed up the idle settles at the higher level, sometimes when idling at lights it drops down to the correct 800 but not often. Both independants and myself (because JZM failed to reconnect it properley) have tried the ISV route, made no difference whatsoever. Is there anything to do with the airflow meter? except replace it?? Migration info. Legacy thread was 25718

POST 4Original post

I've heard of people mentioning about cleaning the airflow meter but don't know any more than that, sorry. Migration info. Legacy thread was 25719

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