fullymatted.
Back to search
Rennlist

Coughing up foam insulation & moisture on inside of windshield

Add to repair workspace
Open repair workspace
Original source
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCoughing up foam insulation & moisture on inside of windshield

Reported or suspected cause

may be related

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
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 suspect 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.

Suspected cause · Original poster

Lately I've been having two issues, which I suspect may be related.

Original post Read captured discussion
Coughing up foam insulation & moisture on inside of windshield
Read full discussion summary

Leading evidence: 'may be related' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'may be related' (1 discussions; 0 report identifying it and 1 suggest it). 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.

Read captured replies

1 matching discussions · 5 captured posts examined · 0 partial discussions

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.

may be related

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.

Suspected cause · Original poster

Lately I've been having two issues, which I suspect may be related.

Original post Read captured discussion
Coughing up foam insulation & moisture on inside of windshield
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.

5 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: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Lately I've been having two issues, which I suspect may be related. With the car sitting after a heavy rain, I'm getting moisture on the inside of the front windshield, passenger side. And when I start the HVAC blower, I get chunks of foam insulation out of every air duct. At first, I thought the windshield seal was failing, now I'm wondering if there is some plastic bit where a seal has failed near the air intake under the frunk lid. Any ideas? The parts diagrams do not really show any foam insulation in use, but I suspect they join the various ducting pieces. 2000 996 C2. Thanks. (As an aside, when I entered "foam" in the tags box, the autocomplete is "foam piece fly out my ***". That's not my problem, but it does make one wonder....)

POST 2Original post

I suspect you've got two different issues. The foam coming out of the ducts is fairly normal for these cars - it's been happening to mine since I bought it. At this stage, it doesn't seem to be a problem operationally, but clearly we've got something deteriorating. There are posts about this (and maybe even a DIY) that point at a flap or door that sits between the AC vents and heater box. Can't really help you on the condensation - I haven't really experienced anything like that (yet). R

POST 3 / ORIGINAL POSTEROriginal post

Thanks. Can you identify the flap in the drawings and is it something that can be seen from below without disassembling the dash?

POST 4Original post

https://rennlist.com/forums/search.p...rchid=23280831

POST 5 / ORIGINAL POSTEROriginal post

Perfect. I think this is it: https://rennlist.com/forums/996-foru...nt-debris.html Thanks

This is a source reference. Confirm exact model applicability in the original material.