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High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

Discussion summary

YOUR RESEARCHHigh Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace from a wreck

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

I replaced both from a wreck with 60K miles on it.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work

Check high-speed fan operation

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 · Original poster

Should my next step be to check the high-speed fan operation?

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Replace from a wreck' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'list at this time' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check high-speed fan operation' (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 · 11 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use when diagnosing my non-working fan(s)

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

That's the thread I used when diagnosing my non-working fan(s).

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

list at this time

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
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 suspect 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.

Suspected cause · Original poster

It's really hard to tell where noises come from at times, but it seemed to be in the front half of the car, so an engine related cause is not on the suspect list at this time.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Check high-speed fan operation

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 · Original poster

Should my next step be to check the high-speed fan operation?

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace fans (one

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 replaced both fans (one?

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (9)

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

Check high-speed fan operation

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 · Original poster

Should my next step be to check the high-speed fan operation?

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace fans (one

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 replaced both fans (one?

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace from a wreck

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 replaced both from a wreck with 60K miles on it.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run car and

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

Run the car and, with two people, listen for the whine fron the front, middle, and rear of the car.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run with the car at full operating temperature

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 · Original poster

I immediately ruled out the SAI, as I can't imagine that would be running with the car at full operating temperature.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Test fan, or plugging in the durametric system and clicking

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

Only problem is getting at the fan in order to apply 12V; so your choice is between taking the car apart to test the fan, or plugging in the Durametric system and clicking on an icon.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Test high speed fan operation

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 · Original poster

I was going to see about testing the high speed fan operation to determine if that's where the noise was coming from.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Test via the obd ii port tests everything

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

Doing that only test part of the harness and system, testing via the OBD II port tests everything.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use when diagnosing my non-working fan(s)

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

That's the thread I used when diagnosing my non-working fan(s).

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

list at this time

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.

Suspected cause · Original poster

It's really hard to tell where noises come from at times, but it seemed to be in the front half of the car, so an engine related cause is not on the suspect list at this time.

High Pitched Whine - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

  • 986Forum: 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

The left front fan didn't work all the time.

No unique explicit quoted action; no causal link assigned

Generation: 20261026T144035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm in the Tampa Bay area of Florida, so bear that in mind when it comes to temperatures. My wife had the Boxster out, and when she arrived home, as she was pulling into the garage, I heard a fairly loud, high pitched whine. It sounded similar to a dentist drill. It's the first time I've heard it. I immediately ruled out the SAI, as I can't imagine that would be running with the car at full operating temperature. Turned the car off, the whine immediately stopped. I didn't have a chance to revisit the issue until this morning. I started the car, and the whine was gone. Turned on the A/C, and confirmed both front fans are operating as normal. It's really hard to tell where noises come from at times, but it seemed to be in the front half of the car, so an engine related cause is not on the suspect list at this time. Should my next step be to check the high-speed fan operation? I can do that with a jumper wire at the relay, correct? Can that be done with the ignition off? Which relays specifically control the high-speed fan setting? If I'm off track, suggestions would be most appreciated! Thanks!

POST 2Original post

Quotes source post: 635079

Sounds similar to what I experienced with my new to me 99. The left front fan didn't work all the time. When I replaced it the occasional jet engine noise went away.

POST 3Original post

Quotes source post: 635079

First... you should identify from where the whine is coming. Run the car and, with two people, listen for the whine fron the front, middle, and rear of the car. Yes. The fans can be jumped from the relays. I replaced both fans (one? I forget.) and don't recall if I had the ignition in the off or accessory position. Do a search upon this forum... I believe I covered my challenge and certain of the details may be covered therein. Find the source, first. If it is a fan... easily you can access it (either one) with wheel removed then peeling back the fender well liner. If you need a fan let me know. I saved the one that wasn't "bad". I replaced both from a wreck with 60K miles on it. My car at the time had ~128K. Best wishes.

POST 4 / ORIGINAL POSTEROriginal post

Thanks gang...I'll have to see if it returns at some point. I was going to see about testing the high speed fan operation to determine if that's where the noise was coming from.

POST 5Original post

all you need is to apply 12v to the fan to test that, dont need any diag tool for that.

POST 6Original post

Quotes source post: 635138

Only problem is getting at the fan in order to apply 12V; so your choice is between taking the car apart to test the fan, or plugging in the Durametric system and clicking on an icon. I know exactly where I would fall if faced with that choice.

POST 7 / ORIGINAL POSTEROriginal post

Quotes source post: 635141

We're certainly on the same page! So, is jumping at the relay also not a viable solution?

POST 8Original post

Quotes source post: 635145

Doing that only test part of the harness and system, testing via the OBD II port tests everything.

POST 10Original post

Quotes source post: 635079

Did you forget Mothers Day? Particlewave has good instruction in the attached thread for relay identification and jumper points. http://986forum.com/forums/boxster-general-discussions/72780-1999-986-left-radiator-fan-not-working.html

POST 11Original post

Quotes source post: 635169

That's the thread I used when diagnosing my non-working fan(s). Just jump them.

This is a source reference. Confirm exact model applicability in the original material.