911uk

Overrun Alternator ...

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHOverrun Alternator ...

Leading reported evidence

Run clutch

Suggestion or failed attempt

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Suggestion
IMO an over-running clutch on an alternator is always a better solution than a fixed pulley.
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Overrun Alternator ...

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Leading evidence: 'Run clutch' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run clutch' (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 · 2 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Run clutch

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
IMO an over-running clutch on an alternator is always a better solution than a fixed pulley.
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Overrun Alternator ...

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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.

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

911uk: 1 discussions

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Generation: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have noticed that my C4S has a normal as opposed an overrun alternator fitted, but was told that it should be an overrun item. I've had the car 5yrs and not noticed anything unusual tbf. Should it have an overrun alternator in place?

POST 2Original post

Automatics don't have the clutch for the alternator, probably because the torque converter acts as a damper. IMO an over-running clutch on an alternator is always a better solution than a fixed pulley.

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