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Planet-9

997 engine bay fan issue

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4 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH997 engine bay fan issue

Reported or suspected cause

opposite

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

Some people complain that the fan doesnt stop after the engine is stopped, my issue is the opposite.

Original post Read captured discussion
997 engine bay fan issue
Frequently discussed work

Replace just in case

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

I am going to have the engine bay temp sensor replaced just in case.

Original post Read captured discussion
997 engine bay fan issue
Read full discussion summary

Leading evidence: 'opposite' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'opposite' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace just in case' (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 · 4 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Replace just in case

Suggestion or failed attempt

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 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

I am going to have the engine bay temp sensor replaced just in case.

Original post Read captured discussion
997 engine bay fan issue

Set pattern etc'

Suggestion or failed attempt

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 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

technicians answer was it has a mind of it's own it does what it needs to do there is no set pattern etc'...

Original post Read captured discussion
997 engine bay fan issue
Frequently discussed actions (2)

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

Replace just in case

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

I am going to have the engine bay temp sensor replaced just in case.

Original post Read captured discussion
997 engine bay fan issue

Set pattern etc'

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

technicians answer was it has a mind of it's own it does what it needs to do there is no set pattern etc'...

Original post Read captured discussion
997 engine bay fan issue
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.

opposite

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

Some people complain that the fan doesnt stop after the engine is stopped, my issue is the opposite.

Original post Read captured discussion
997 engine bay fan issue
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.

4 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.

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

Generation: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi all, glad to be here, I just picked up a 2005 tiptronic C2S Cab with just 35,000 kms (21,000 mls) on the clock in midnight blue, used to own a midnight blue 996 Carrera 4 Cab. I have an issue I think with the engine bay fan, I have read all the threads on this issue, but I haven't found an answer that helps me. The engine bay fan never comes on unless the key is in the ignition and the power is on. Some people complain that the fan doesnt stop after the engine is stopped, my issue is the opposite. When back from a long hot drive, the fan is on, I turn off engine and the fan stops. If i turn the power back on in ten or twenty minutes the fan comes on straight away. It seems to me that fan wants to be on, but can't without power from the ignition on. It has just been serviced and I asked this question and the Porsche technicians answer was it has a mind of it's own it does what it needs to do there is no set pattern etc'... What do you guys think? I am going to have the engine bay temp sensor replaced just in case. Cheers guys thank for your help!

POST 4Original post

The engine bay temperature sensor tells the computer that the bay temperature is high enough to require the fan's operation. If, as you say, the fan is already running before you turn off the ignition, then the sensor is performing nominally and changing it out probably won't help your situation...

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