Planet-9

Weird groaning noise when cold start

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Original source

3 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHWeird groaning noise when cold start

Reported or suspected cause

starter motor spigot not returning quickly enough

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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 report identifying a cause: 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.

Reported cause
It was the starter motor spigot not returning quickly enough after start-up and therefore staying engaged with the crown wheel gear teeth on the fly wheel and spinning the starter motor up to engine speed, hence the noise.
Original post Read captured discussion
Weird groaning noise when cold start

Frequently discussed work

Replace water pump

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
I changed the water pump on my own but the groan persisted.
Original post Read captured discussion
Weird groaning noise when cold start

Read full discussion summary

Leading evidence: 'starter motor spigot not returning quickly enough' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'starter motor spigot not returning quickly enough' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace water pump' (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 · 3 captured posts examined · 1 partial discussions

Compare 1 other evidence results

Replace water pump

Performed · outcome unconfirmed

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
I changed the water pump on my own but the groan persisted.
Original post Read captured discussion
Weird groaning noise when cold start

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.

Replace water pump

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
I changed the water pump on my own but the groan persisted.
Original post Read captured discussion
Weird groaning noise when cold start

Reported and suspected causes (1)

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

starter motor spigot not returning quickly enough

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 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.

Reported cause
It was the starter motor spigot not returning quickly enough after start-up and therefore staying engaged with the crown wheel gear teeth on the fly wheel and spinning the starter motor up to engine speed, hence the noise.
Original post Read captured discussion
Weird groaning noise when cold start

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.

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

Planet-9: 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 just had a new starter motor which solved my problem.
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi all, just yesterday my 987.2 Cayman started to make a very loud groaning noise from a cold start. This is coming from the engine bay.Took about 5 minutes for it to fully disappear. I don't know if this is the water pump because I don't see a leak and also I haven't loss any coolant. Thanks. I've got a video but I don't know how to post it.

POST 2Original post

My 987.1 Cayman was making a brief but loud moaning sound on start-up. It was the starter motor spigot not returning quickly enough after start-up and therefore staying engaged with the crown wheel gear teeth on the fly wheel and spinning the starter motor up to engine speed, hence the noise. The starter motor is under the intake manifold and not easily accessible. I just had a new starter motor which solved my problem. I'm not saying this is the problem with your car too, but it would be worth having checked out. I've also had noise from the water pump which was a high pitch whine, the bearing was starting to fail. A new water pump sorted that.

POST 3Original post

Thanks for your input. I changed the water pump on my own but the groan persisted. Gave up and took it to a Porsche specialist and they thought that a power steering fluid leak through a hose is causing the power steering pump to be starved of fluid and as such the groan. Funny thing is that once the car is up to temp the sound disappears.

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