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Planet-9

Front radiator fans

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

Discussion summary

YOUR RESEARCHFront radiator fans

Reported or suspected cause

dirt

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

Issue is dirt.

Original post Read captured discussion
Front radiator fans
Frequently discussed work

Clean itself out once going

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

The manual spinning will loosen that up, and then fan will clean itself out once going again.

Original post Read captured discussion
Front radiator fans
Read full discussion summary

Leading evidence: 'dirt' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'dirt' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Clean itself out once going' (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 · 11 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Replace design of the fans

Performed · outcome unconfirmed

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 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

changed the design of the fans with the introduction of the

Original post Read captured discussion
Front radiator fans

Replace fan setup

Performed · outcome unconfirmed

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 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

Since I have a 2009 - I have no resource material to tell you where the relay(s) are - starting in 2009 they changed the fan setup with a controller on the starboard side one controlling both fans.

Original post Read captured discussion
Front radiator fans

Test when car was cold

Performed · outcome unconfirmed

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 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

First I tested when car was cold.

Original post Read captured discussion
Front radiator fans

Clean itself out once going

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

The manual spinning will loosen that up, and then fan will clean itself out once going again.

Original post Read captured discussion
Front radiator fans
Frequently discussed actions (7)

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

Clean itself out once going

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

The manual spinning will loosen that up, and then fan will clean itself out once going again.

Original post Read captured discussion
Front radiator fans

Replace design of the fans

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

changed the design of the fans with the introduction of the

Original post Read captured discussion
Front radiator fans

Replace fan setup

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

Since I have a 2009 - I have no resource material to tell you where the relay(s) are - starting in 2009 they changed the fan setup with a controller on the starboard side one controlling both fans.

Original post Read captured discussion
Front radiator fans

Replace resistor

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

Apparently, you can change the resistor, but I recall the part is hard to find and I ended up buying a used fan unit from a parts vendor.

Original post Read captured discussion
Front radiator fans

Run temp

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

the fan only comes on when the engine is on, and the indicated temp never goes over the 12 o’clock point indicating it’s at running temp

Original post Read captured discussion
Front radiator fans

Test when car was cold

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

First I tested when car was cold.

Original post Read captured discussion
Front radiator fans

Use stick

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

3) start car, turn on AC and use a stick to manually turn fan.

Original post Read captured discussion
Front radiator fans
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.

dirt

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

Issue is dirt.

Original post Read captured discussion
Front radiator fans
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.

11 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi all, I know there are many post on This topic and I have spent all afternoon reading through them. However, one questions I have I couldn’t find an answer too. my passenger front radiator fan has stopped working, resulting in the drive side going crazy often. now I have read that the fans go faulty and it’s pretty common. I have had a look today and when I put 12v straight to the fan it works. My question is would this be the case if it is a faulty fan? Or could it be something else. Like the radiator fan ECU ? Do they go faulty? I’m a bit stuck as to whether I could order a new fan or not. Could it be a relay? Any help from those in the know would be great. thanks Simon

POST 2Original post

Simon - the year/model/engine of your 987 would be useful info to have since Porsche changed the design of the fans with the introduction of the 987.2 in 2009. You're asking lots of questions giving us almost no information to go on. What does "resulting in the drive side going crazy often" mean? Depending on your model/year/temperatures and the accessories like air-conditioning that are functional some of the 958 cars only run one fan until the other one is "needed" - that's normal.. Is this happening with the engine running? What sort of ambient temperature? What sort of indicated engine temperature?

POST 3Original post

Hello, thanks for the reply. Let me try and provide some more details. my car is a 2007, 2.7 987.1 the passenger fan doesn’t seem to come on anytime. (That I have seen). The drivers fan come once the car is warm and seems to come on, on a very fast setting. It appears to come on for 20 seconds,off for 20 seconds and so on. Is seems to come on whether the AC is on or off, always at a super fast speed. It was about -1 outside temp today when this was happening. the fan only comes on when the engine is on, and the indicated temp never goes over the 12 o’clock point indicating it’s at running temp Thanks Simon

POST 4Original post

Simon - is this left hand drive or right hand drive?

POST 6Original post

IIRC - there is a relay for the fans, perhaps more than one, and I seem to recall hearing of them failing. Since I have a 2009 - I have no resource material to tell you where the relay(s) are - starting in 2009 they changed the fan setup with a controller on the starboard side one controlling both fans. I suspect if you asked on ********.com in the 987/ 981 forum - giving details like the car being right-hand-drive, and year/model someone there will have an answer for you.

POST 7Original post

Thank you for the advice. I’ll hoping Renlist and make a post. Thanks again.

POST 8Original post

Same thing happened to me. I noticed it at drive throughs, the one fan echo would go so loud. First I tested when car was cold. Start and turn on AC. only driver fan worked. 2) Off car, and put hand behind bumper to manually spin the fan. 3) start car, turn on AC and use a stick to manually turn fan. Fan then started spinning and has been good since. Issue is dirt. mud, leaves can get up in there and jam up fan. The manual spinning will loosen that up, and then fan will clean itself out once going again.

POST 9Original post

When I bought my '06 CS in 2017, it has a job functioning left side fan. My research indicates that there is a resistor located on the can that is usually the cause of failure. Apparently, you can change the resistor, but I recall the part is hard to find and I ended up buying a used fan unit from a parts vendor.

POST 10Original post

Thanks for the input, I have however put a 12v feed to the fan and it works, so its not jammed

POST 11Original post

Hello, thanks for the input. Do you know if your fan worked when you put a 12v feed directly to it? mine does so I'm questioning if its the fan or the little ECU that controls the front fan that has a fault.

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