12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHIdentifying Rattle Noise on Idle
Leading reported evidence
Check mounting bolts
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
That's a really good observation - check both mounting bolts and inspect the plate it mounts to carefully for cracks.
Leading evidence: 'Check mounting bolts' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check mounting bolts' (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 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.
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
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Suggestion
Before you check the price on the bracket, you should be sitting down with a stiff drink in your hand though...
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
That's a really good observation - check both mounting bolts and inspect the plate it mounts to carefully for cracks.
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 changed the airbox recently from K&N intake to a 997 airbox so I thought maybe I messed something up but I don't think thats the issue.
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.
12 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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T091943Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I'm trying to identify the issue causing this rattling noise. It only happens on Idle and immediately goes away at RPMs > 1800. It doesn't sound like the typical bore scoring noise.
and sounds like its near the alternator/belt area. Any ideas here? I posted a video on youtube:
You Tube
Thanks in advance
That engine is really running rough. Pull the air filter box, remove serpentine belt and hand test all the pulleys and water pump, alternator. Check the oil fill pipe for any cracks.
That's a really good observation - check both mounting bolts and inspect the plate it mounts to carefully for cracks.
I had a belt shred soon after I bought the car and found this:
New vs old:
Yes, nice catch! If it is a broken alternator bracket, the movement could have compromised the bearing too.
Make sure you replace it with the beefier 997 bracket shown in Sleepy's pic (part #997.101.021.00). Before you check the price on the bracket, you should be sitting down with a stiff drink in your hand though...
The sleeve that slides in as u tighten that bolt corodes to the aluminum so when someone prys on it to remove the alt it doesnt allow it to lift squarely and it puts too much pressure on that plate.
Ha I�m coming back to this thread cause I found the issue and�.. the alternator bracket broke and also shredded the belt.
I wish I kept getting emails about replies on this thread so I could�ve found the issue earlier 😂
Luckily I found a replacement bracket and will be installing this weekend
To those who had this issue, did you lose a lot of coolant when replacing the bracket? Did you have to do a full coolant flush or is topping up enough?
Should I top up with distilled water, red coolant or a mixture?
Thanks again!
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