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Porsche Club GB

engine bay fan

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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHengine bay fan

Leading reported evidence

Replace temp sensor in the engine bay

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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 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 changed the temp sensor in the engine bay but still the fan does not work.

Original post Read captured discussion
engine bay fan
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Leading evidence: 'Replace temp sensor in the engine bay' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace temp sensor in the engine bay' (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 · 7 captured posts examined · 0 partial discussions

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Test sensor

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

Decking it would make the fan switch on or is it more a case of you want to test the sensor?

Original post Read captured discussion
engine bay fan
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 temp sensor in the engine bay

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 changed the temp sensor in the engine bay but still the fan does not work.

Original post Read captured discussion
engine bay fan

Test sensor

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

Decking it would make the fan switch on or is it more a case of you want to test the sensor?

Original post Read captured discussion
engine bay fan
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.

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

  • Porsche Club GB: 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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all. I have a 2000 996 C2. I have never noticed the engine bay fan work and in this heat the temperature gauge is going a little higher than normal in traffic. The engine bay is very very hot. I have changed the temp sensor in the engine bay but still the fan does not work. Can someone please advise the operation of this fan? is indeed my next step to put some power directly to the fan to see if it works? thanks.

POST 2Original post

Hi donp38 I had the same issue with my 2001 996 C2 Cab and thought I was hauling dead weight but I attended an OPC clinic where they plugged the car into the laptop and actually fired it up. It buzzed away and cleared out the cobwebs but has not worked since. I asked the technician why it did not start at lower temperatures and he said it was more like a safety valve and that if the engine bay does get too hot it will work. Like you I would prefer it to start at lower temperatures. Regards Dodgy

POST 3Original post

The engine compartment fan should cut in when the engine bay reaches 60°C, which it seldom does. (see http://www.porscheclubgbforum.com/tm.asp?m=330170 for operating conditions). As Dodgy says, the fan can be activated with a Porsche tester. I'm not sure of the sensor output details, so I'm reluctant to suggest bridging the terminals. Maybe pull the sensor out of its clip and gently blow some hot air on it from a heat gun? (Not sure a hair dyer would get hot enough.)

POST 4Original post

You could try dunking the sensor in a cup/mug of boiling/hot water.

POST 6 / ORIGINAL POSTEROriginal post

great idea. i'll try the boiling water...great idea...

POST 7Original post

Hello, I thought the relay for this is under the rear parcel shelf?. Number 8? Decking it would make the fan switch on or is it more a case of you want to test the sensor? I think you should as this would tell you the fan works at least as your original comment.

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