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996 C4S Idle

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH996 C4S Idle

Leading reported evidence

Run thicker

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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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.

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
Are you running thicker then usual oil?
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996 C4S Idle

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Leading evidence: 'Run thicker' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run thicker' (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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Run thicker

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 running thicker then usual oil?
Original post Read captured discussion
996 C4S 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.

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.

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

Outcome without a verified action link
I have to say that I feel the difference between the two cars and the 04 w/125k feels better at idle but when on the throttle they both perform really well & no difference.
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Generation: 20261026T124918Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have an 04 C4S w/125k miles on the odometer and an 02 w/62k miles on her. My 04's oil pressure at idle is between 4 & 5 bar but on the 02 it sits between 2 & 1 bar. I recently purchased the 02 and had a PPI done & was told all was good but why the difference ? I have to say that I feel the difference between the two cars and the 04 w/125k feels better at idle but when on the throttle they both perform really well & no difference. I'm really confused. Any help would be greatly appreciated.

POST 2Original post

If you are talking hot idle, I think your 04 car needs a new oil pressure sender.

POST 3Original post

02 is how it should be; 04 C4S is high at idle (and on temperature I presume). Are you running thicker then usual oil? Sender makes most sense though. Volkert

POST 4 / ORIGINAL POSTEROriginal post

I'll check hot & cold & then repost. Thank you both for helping out.

POST 5Original post

Agree. Hot should be somewhere around 1, but some folks, including me, have 2 at hot idle, and some are less than 1. Cold could be anywhere from 3-5 (pegged). The manual indicates a minimum of 3.5 bar at 5,000 RPM when fully warmed up.

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