fullymatted.
Back to search
Porsche Club GB

Noisy Compressor

Add to repair workspace
Open repair workspace
Original source
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHNoisy Compressor

Leading reported evidence

Replace compressor

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 would be interested if anybody else has had this problem and is it a difficult job replacing the compressor?

Original post Read captured discussion
Noisy Compressor
Read full discussion summary

Leading evidence: 'Replace compressor' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace compressor' (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 · 5 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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

Replace compressor

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 would be interested if anybody else has had this problem and is it a difficult job replacing the compressor?

Original post Read captured discussion
Noisy Compressor
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.

5 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.

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

Outcome without a verified action link

It cured my car and now the air is really really cold rather than just cold!!

Original post Read captured discussion

No unique explicit quoted action; no causal link assigned

Generation: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I own a 1998 C2 996. I've been told by a local opc that my air conditioning compressor is very noisy. I would be interested if anybody else has had this problem and is it a difficult job replacing the compressor? Many thanks.

POST 2Original post

Is it the compressor that is making the noise? My independent tells me that the whining sound is often caused by the idler pullies that the belt wraps around not the compressor itself. When you turn the aircon on, it loads up the belt and the pullies - apparently it's the bearings on the pullies that can make the racket under load. A couple of replacement idlers are much cheaper than a compressor - best of luck! Ian W

POST 3Original post

Had the same problem with my car. You need it re-gassing. I was convinced that the noise from my car was a classic bearing noise, but I was then very well informed by Sutton Coldfield OPC that when the gas pressure drops (but not low enough to activate the low pressure switch), bubbles can form in the liquid which cause resonance when they pass through the vanes of the compressor - and it is this noise which often travels down the pipes and sounds as if it is coming from behind the dashboard. So the moral of the storey is - if you can't find obvious leaks in the system, always go for a re-gas and see what happens. It cured my car and now the air is really really cold rather than just cold!!

POST 5Original post

Where is the compressor and other bits of the system? I too have a weird whine behind the dashboard when the air con is working, is it in there or is it the pipes I can hear? Also I don't think the revs rise so much at idle when the a/c cuts in these days. Still getting reasonably cold air. Would you take it to any old a/c specialist or one who knows Porsches?

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