20 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRattling when coasting in gear
Reported or suspected cause
loose exhaust tip
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
1
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Leading evidence: 'loose exhaust tip' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'loose exhaust tip' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Adjust anyways, really hope it�s something simple, will try' (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.
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Replace with and upgraded clutch kit, part number 99611691102eps
Performed · outcome unconfirmed
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Performed · outcome unconfirmed · Original poster
Negative on the flywheel, just replaced with and upgraded clutch kit, part number 99611691102EPS.
Adjust anyways, really hope it�s something simple, will try
Suggestion or failed attempt
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Unsuccessful attempts
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Suggestion · Original poster
One of my exhaust tips need adjusting anyways, really hope it�s something simple, will try to get under the later this week.
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Suspected cause · Original poster
Good info for sure, I suspect the flywheel as well.
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.
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Suggestion · Original poster
Checked the heat shields and other things that could be loose and everything was solid, so ended up bringing it over to a local shop to look at that and a minor service to prep for a road trip.
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Suggestion · Original poster
Checked the heat shields and other things that could be loose and everything was solid, so ended up bringing it over to a local shop to look at that and a minor service to prep for a road trip.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion · Original poster
Got a second opinion yesterday and the contents in the oil filter are enough to suspect a major issue where a rebuild of recommended, still can�t believe it but now just more pondering.
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.
20 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi,
I�m experiencing 100% off this, http://forums.pelicanparts.com/porsche-911-technical-forum/505504-spirited-drive-now-rattle-when-coasting-gear.html
wondering if anyone has experienced anything like this or any suspicion on what it might be?
03 C4S currently 101k
Oil change, differential fluid at 95k
Clutch at 85k
When you did your clutch at 85k miles did you also replace the dm flywheel? Could be your springs are worn and rattling. Porsche had a bulletin for this issue back around 2005. I'd guess there are a few low miles 996's with original flywheels that are wearing out, or about to.
Silly as it sounds, check simple things, like heat shields and such. I had a similar experience with mine shortly after taking ownership. Turned out to be a loose exhaust tip.
Checked the heat shields and other things that could be loose and everything was solid, so ended up bringing it over to a local shop to look at that and a minor service to prep for a road trip. Will update what I find out.
Well that�s all she wrote, metal and plastic in the filter and the filter canister so suspected IMS issue etc. The car still runs and drives but now need to decide what direction to go because a full rebuild is recommended. Any and all suggestions welcomed
Whoa! So she went from a �rattle when coasting� to a full engine re-build? Hmmm, there seems to be a disconnect here! What does it sound like when you start it up and let it idle? Originally, you made it sound like the �rattle� had something to do with the movement of the car (coasting)...
[Image-only post; no author-written text. Original image references:]
https://cimg1.ibsrv.net/gimg/rennlist.com-vbulletin/381x200/1b90ef03_6ac7_478d_8faf_67113ac99d76_d9fcd42b24237777c537b3148e51d0b6a29566d6.gif
When idling it sounds completely normal. Two weeks ago, I�m driving her normally until I started to hear the rattle not only while coasting as described but when in first gear at 3-4K RPM so that�s when I stopped driving all together and made an appointment at a local indie Porsche shop. That appointment happened yesterday and what they observed the rattle happens even while idling, they removed the drive belt and the idling persisted. Then they removed the oil filter, that�s when they discovered metal and plastics which is indicative of �
either a failing bearing (crankshaft main, or IMS), possibly due to oil supply issues�
So drove the car back home and trying to process everything. Like I said car still runs and drives and at idle it sounds normal, it might be ticking from sitting for two weeks but before that all was normal.
yeah I�ll say, the diagnoses comes from a shop that I trust so my initial reaction was to take their word for it but going to try and get a second opinion on it and go from there.
I would not even start it again let alone drive it until you confirm their findings at the very least. Sorry you have to go through this as they are great cars when dialed in.
Got a second opinion yesterday and the contents in the oil filter are enough to suspect a major issue where a rebuild of recommended, still can�t believe it but now just more pondering.
Sorry to hear that. However, it�s better that the car needs a rebuild than a person needing surgery. Gotta take it in stride and have some perspective.
I would only pursue a rebuild by an engine builder that has done dozens of these engines, and can verify yours is suitable (sometimes the debris warrants the engine non-fixable. Not Porsche air-cooked experts, etc. Specifically an engine builder that�s done M9X engines.
You could also separately source a used engine and roll the dice:
https://www.facebook.com/marketplace/shops/item/2440512496051861/?referral_story_type=shop_pdp_share_deep_link&referral_code=shops_pdp_sh are
amen to that, it�s a lot of money but at least it�s not death off a being. The shop(s) mentioned a used engine would be a dice roll as well but it is a substantially more inexpensive option. What are your thoughts on an option like this�
https://www.ebay.com/itm/19374051906...AAAOSwVFlUBh2t
rebuilt with core exchange? Would love a pulse from the group about used vs rebuilt (from non reputable).
