Pelican Parts

997 rough idle

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH997 rough idle

Leading reported evidence

Replace o2 sensors all coils and the maf sensor

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
i have replaced all o2 sensors all coils and the maf sensor.
Original post Read captured discussion
997 rough idle

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Leading evidence: 'Replace o2 sensors all coils and the maf sensor' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace o2 sensors all coils and the maf sensor' (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 · 6 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Set these 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 · Original poster
could the rough idle be caused by the throttle body and set these codes?
Original post Read captured discussion
997 rough idle

Use scanner

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
You must use the scanner to see what the fuel trims are at the RKAT and the FRAU load values.
Original post Read captured discussion
997 rough idle

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.

Replace o2 sensors all coils and the maf sensor

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
i have replaced all o2 sensors all coils and the maf sensor.
Original post Read captured discussion
997 rough idle

Set these 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 · Original poster
could the rough idle be caused by the throttle body and set these codes?
Original post Read captured discussion
997 rough idle

Use scanner

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
You must use the scanner to see what the fuel trims are at the RKAT and the FRAU load values.
Original post Read captured discussion
997 rough idle

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.

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

Pelican Parts: 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: 20261026T091943Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

i have a 997 here with the typical p2187 and p2189. i have replaced all o2 sensors all coils and the maf sensor. could the rough idle be caused by the throttle body and set these codes?

POST 2Original post

Quotes source post: 6370174

Have the codes been cleared?

POST 3 / ORIGINAL POSTEROriginal post

yes, they came back twice.

POST 4Original post

I looked up in the manual and 2187 and 2189 are sort of companion codes. They mean that the fuel trims are so far out that they are uncorrectable to bring lambda to a 1 value. They are written to indicate a bad condition (either rich or lean) at an off idle under load (RKAT) or the lower range of the freeway driving speeds (FRAU). You must use the scanner to see what the fuel trims are at the RKAT and the FRAU load values. This will tell you whether you have a rich or lean condition. Some of the items mentioned are (too rich) fuel pressure too high, leaking injector, maf sensor inaccurate; or (too lean) tank vent valve stuck open, sai valve leaking, fuel pressure too low, maf inaccurate.

POST 5 / ORIGINAL POSTEROriginal post

thank you matt. should i be looking at the fuel trim driving or at idle? the car will idle fine one day then horrible the next, it is intermittent.

POST 6Original post

Using PIWIS I would look up the codes as they will have expanded data and will tell you rich or lean and at what range. Maybe autologic has same capability. If not try durametric on front pass seat and read fuel trims while driving in failure mode.

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