11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHHelp Diagnosing sound
Reported or suspected cause
mounting bracket the secures the cats onto the engine
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
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Discussions that report identifying a cause
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Reported cause
I had a very loud noise recently which luckily turned out to be the mounting bracket the secures the cats onto the engine.
Leading evidence: 'mounting bracket the secures the cats onto the engine' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'mounting bracket the secures the cats onto the engine' (1 discussions; 1 report identifying it and 0 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 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
It does not appear clutch related or drivetrain related as I used that pedal and there is no difference.
This is new, rather unpleasant sound.
I have this "syncopated clanking" sound that I'd like to get some insight into before I get her flatbedded.
It happens after the car has warmed a bit. Not at start-up.
It does not appear clutch related or drivetrain related as I used that pedal and there is no difference. You can only hear it at idle, though it does not appear to slow (after lifting throttle). It is probably there at above 800 RPM, but the engine is louder.
http://youtu.be/BQH5Eds99zQ
No CEL. No noticeable difference in idling, or accelerating.
I pulled the filter, and housing, no sparkle kisses of death.
Oil is changed every 5K, no known issues in last 15K of ownership. 74K total miles. It has a LWFW, but that rattle (once warm) goes away when clutch is engaged (at idle), and it's a different rattle.
Thanks for any insight.
Hello. I had a very loud noise recently which luckily turned out to be the mounting bracket the secures the cats onto the engine. It had cracked right through causing a loud chattering sound as the engine vibrated. Hard to see unless you are right up close to it. It was at the point where the clamp ties the bracket to the cat itself. Needless to say after a quick weld from my local Porsche specialist all is now fine.
May not be for you but fingers crossed its something easy to Fix.
Thanks for updating. So will you qualify to have a free replacement? Or all out of your own pocket? Over here in the UK, replacement cats are expensive and no government initiative for free replacements within a specific period.
Glad to hear it was quickly diagnosed and relatively simple fix.
I will try to get it under warranty first... I think I am inside (awfully close) 8yr. 80K which is the limit. I am at 74K miles, but 8Yr maybe the hurdle.
I don't have the manual in front of me, but googling brought up those time periods.
