Porsche Club GB

Replacement of internal blower fan

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Original source

4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHReplacement of internal blower fan

Leading reported evidence

Check wires

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
I have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect.
Original post Read captured discussion
Replacement of internal blower fan

Read full discussion summary

Leading evidence: 'Check wires' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check wires' (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 · 0 partial discussions

Compare 3 other evidence results

Replace blower fan , the old one gave up

Suggestion or failed attempt

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 have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect.
Original post Read captured discussion
Replacement of internal blower fan

Replace fan ,ducting etc and switched

Suggestion or failed attempt

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 have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect.
Original post Read captured discussion
Replacement of internal blower fan

Run backwards

Suggestion or failed attempt

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
fan sorted , running backwards !
Original post Read captured discussion
Replacement of internal blower fan

Frequently discussed actions (4)

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

Check wires

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 have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect.
Original post Read captured discussion
Replacement of internal blower fan

Replace blower fan , the old one gave up

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 have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect.
Original post Read captured discussion
Replacement of internal blower fan

Replace fan ,ducting etc and switched

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 have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect.
Original post Read captured discussion
Replacement of internal blower fan

Run backwards

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
fan sorted , running backwards !
Original post Read captured discussion
Replacement of internal blower 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.

4 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: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

hello all. I have just changed my blower fan , the old one gave up, so a new fan was duly purchased, together with a upgrade plug from Porsche ( the old fan had a large plug , the new fan has a much smaller plug ) I removed the old plug ,checking the wires that where numbered 1 & 2 , I fitted the new plug , again with a 1 & 2 and connected , so wires should be correct , replaced fan ,ducting etc and switched on , it works but not as well as I would expect. So basically , could the wires be wrong ? Or do I have a dodgy new fan ? 99 C4 75pno

POST 2Original post

Was this a Porsche OEM replacement fan? Is there a resistor in the circuit that's failed? I cannot imagine the wiring is incorrect, otherwise the fan would run in reverse. [8|]

POST 3Original post

Have you checked what voltage your getting at the fan? The two wires at the fan, go to and from the climate control module which will control speed etc.

POST 4 / ORIGINAL POSTEROriginal post

Update fan sorted , running backwards ! Wires swapped over , now all good, proper blowing now happening ??

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