4 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Reported or suspected cause
pulley rattle
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 · Original poster
At this point everything works and the only issue is a pulley rattle which is quite subdued, but I'm off on a 4.5k mile road trip across western US and I'd rather prefer it doesn't cause a major issue and that AC remains effective.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Frequently discussed work
Replace bearing
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
Allegedly it is not uncommon to replace the bearing to later learn that the bearing died as a consequence of the compressor failing, or so the person said who wanted to sell the compressor.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Read full discussion summary
Leading evidence: 'pulley rattle' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'pulley rattle' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace bearing' (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.
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 removed the circlip and used 3 legged puller to remove pulley from compressor shaft.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Use few smart whacks
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 · Original poster
It's a standard `righty tighty lefty loosey' thread so I held on to the pulley and used a few smart whacks on spanner with blunt instrument.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Replace bearing
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
Allegedly it is not uncommon to replace the bearing to later learn that the bearing died as a consequence of the compressor failing, or so the person said who wanted to sell the compressor.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Replace just the clutch
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
Hoping someone can help with suggestions of direct sources of parts and process for replacing just the clutch.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
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.
Replace bearing
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
Allegedly it is not uncommon to replace the bearing to later learn that the bearing died as a consequence of the compressor failing, or so the person said who wanted to sell the compressor.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
Use same 3legged puller and an arrangement of large washers
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
The bearing in the pulley had some play and I was able to remove it using the same 3legged puller and an arrangement of large washers to push the bearing out of pulley.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
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.
pulley rattle
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 · Original poster
At this point everything works and the only issue is a pulley rattle which is quite subdued, but I'm off on a 4.5k mile road trip across western US and I'd rather prefer it doesn't cause a major issue and that AC remains effective.
996.1 ac compressor clutch seems to be going out... - Page 1 - 911/Carrera GT - PistonHeads UK
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.
PistonHeads: 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: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hoping someone can help with suggestions of direct sources of parts and process for replacing just the clutch.
The AC works and my only symptoms are
1. a pulley rattle noise, it sounds like a tensioner or alternator/water pump bearing, and
2. an oil / greasey deposit that looks like it is coming from AC clutch or maybe the front of the compressor. I am hoping it is a fault that is limited to the clutch and not a front seal on the AC compressor which is causing it to shed it's oil.
At this point everything works and the only issue is a pulley rattle which is quite subdued, but I'm off on a 4.5k mile road trip across western US and I'd rather prefer it doesn't cause a major issue and that AC remains effective.
Any suggestions for process further investigation, or comments are most appreciated.
follow up in case this is helpful to anyone...
I removed serpentine belt and undid 10mm bolt on front of compressor. It's a standard `righty tighty lefty loosey' thread so I held on to the pulley and used a few smart whacks on spanner with blunt instrument. The front plate off came of with a single spacing washer. I removed the circlip and used 3 legged puller to remove pulley from compressor shaft.
The bearing in the pulley had some play and I was able to remove it using the same 3legged puller and an arrangement of large washers to push the bearing out of pulley. The bearing was NSK L41 35BD5222dum18A which I believe refers to a bearing with dimensions 35 x 52 x 22mm, apparently a common size for automotive bearings and I just rang around to various local vendors after searching google.
It's clear that at least locally to me nobody wants to press a bearing in and then have some potential liability downstream and conversely everyone wants to sell a compressor... Allegedly it is not uncommon to replace the bearing to later learn that the bearing died as a consequence of the compressor failing, or so the person said who wanted to sell the compressor. A choice of $20 for a bearing or 450+ for a compressor, plus faffing about getting the AC drained and recharged. So at least for now the bearing is getting changed.
Back home to stick the bearing in the freezer and the pulley in the sun. Nap time... Later another arrangement of bits of metal/larger washers and the same three legged puller and then a white PVC pipe fitting and rubber mallet and new bearing was in place. Actually it wasn't in exactly the right place as when I bolted it all back together the front plate just locked up solid to the clutch. So I messed around finding a couple of washers that would *just* space the plate off the pulley when the center bolt was tight.
This seems to be OK as when the engine is running the compressor pulley spins freely and when the AC is activated it all locks together.
calling it good until it leaps sideways out of the engine bay.
If going in a 4500 miles trip just buy the shorter belt for non AC cars for $30 and keep it with you. If that bearing does fail (it won't) or the AC gives up you can then run it with it out of the loop.
Just keep the ac button on though so your fans sill run before 105ºc.
