6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH2001 c2 cab tip drone at 2k rpm
Leading reported evidence
Replace motor mounts
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
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Suggestion · Original poster
I'm curious if anyone here has proactively replaced motor mounts that didn't obviously look bad and had it solve an issue (drone, shift quality, etc.).
Leading evidence: 'Replace motor mounts' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace motor mounts' (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
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Suggestion
Use a pry bar to gently lever the engine up and down.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace motor mounts
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'm curious if anyone here has proactively replaced motor mounts that didn't obviously look bad and had it solve an issue (drone, shift quality, etc.).
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.
6 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: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Our 2001 C2 Cabriolet has a somewhat irritating low rpm "drone" from the exhaust from 1500 up to around 3000 rpm. This is top of mind because the tiptronic is constantly seeking the highest gear possible, so it's always in this range (which is a separate topic).
Car is totally stock with only 21k miles on it.
Could the engine mounts have deteriorated over the last 25 years such that they could lead to this droning? The exhaust tip location looks fine (see pic below).
Car feels "like new" and very tight, noticibly more so than our 2004 C4S with 110k miles, so the rubber on the cab is in very good shape. This tells me the engine mounts might be fine.
Any ideas on what else could be causing a low rpm drone?
Don't assume the mounts are good. Unless they've been replaced, it's unlikely.
You say it's a droning sound. Have you had a friend ride with you that could sit in the back to narrow down the source of the drone? You might have an issue with the exhaust that is only notable in that rpm range but overwhelmed at higher revs.
This is just a SWAG though.
Thanks for the brainstorming. I put "drone" in quotes because it's more of an overall low pitched "booming sound" throughout the cabin. It's nothing specific coming out of the exhaust itself but rather the whole back of the car. With another person in the passenger seat we've not been able to localize it to any degree. This is what got me thinking about motor mounts.
I'm curious if anyone here has proactively replaced motor mounts that didn't obviously look bad and had it solve an issue (drone, shift quality, etc.).
Cheers,
-Dennis
Pry Bar Test
Jack the car up safely on jack stands and locate the mounts (they sit behind the rear wheels, securing the engine to the subframe).
Place a block of wood under the oil sump and lightly support the engine with a floor jack.
Use a pry bar to gently lever the engine up and down. If the rubber allows excessive movement or feels spongy, the mounts are broken.
Google AI in the search engine actually. I forgot how I phrased it, but that was part of the response I thought was practical so I copied it and pasted it here.
Let me know what you find.
This is a source reference. Confirm exact model applicability in the original material.
