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99 Low Idle?

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

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YOUR RESEARCH99 Low Idle?

Leading reported evidence

Adjust mixture

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.

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Suggestion

Incidentally, when I asked a local indy specialist to diagnose it, the ECU actually logs a Lamda fault code, apparently as a result of it going end-to-end of its adjustment range, trying to adjust mixture for a misread airflow mass....however, Lamda's not necessarily at fault.

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99 Low Idle?
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Leading evidence: 'Adjust mixture' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust mixture' (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.

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1 matching discussions · 4 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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

Adjust mixture

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

Incidentally, when I asked a local indy specialist to diagnose it, the ECU actually logs a Lamda fault code, apparently as a result of it going end-to-end of its adjustment range, trying to adjust mixture for a misread airflow mass....however, Lamda's not necessarily at fault.

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99 Low Idle?
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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.

4 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.

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Generation: 20261027T061840Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Where should the RPMs be at idle? My car has stalled a few times. Initially I thought it was due to my not driving a standard shift in about 15 years! Now that I am no longer rusty, I think she seems to be idling low. Any advice out there?

POST 3Original post

mine stay around 800 with A/C on. 650 without it. either way will not stall. bring her in check it out what went wrong. ICV (Idle Control Valve-if there's one) maybe?

POST 4Original post

I'll lay money on it being the Mass AirFlow (MAF) sensor....just replaced mine, the revs "hunted" for about 6-7secs when stopping at junctions, etc. Had the same symptoms on my Impreza TypeR last year, both cases the MAF sorted it. Incidentally, when I asked a local indy specialist to diagnose it, the ECU actually logs a Lamda fault code, apparently as a result of it going end-to-end of its adjustment range, trying to adjust mixture for a misread airflow mass....however, Lamda's not necessarily at fault. Similar cost for each (Lamda's approx �100 each in the UK, plus fitting...mine took hours, seized in sensor)...the MAF, from Porsche is �395 plus tax plus fitting...however, can be sourced a LOT cheaper than that, about �150, and can be replaced in about 15secs flat yourself....) Hope this helps... Spen

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