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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHFoam in AC Vents?
Reported repair
Replace foam
Reported resolution
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that report a fix
1
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Reported fix
My indy solved the problem just changing the foam for other used in plumbing. It worked perfect actually.
Leading evidence: 'Replace foam' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Replace foam' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Replace foam', supported by resolution reports in 1 discussions. 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.
Run a/c the windshield fogs up and water condenses
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
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Performed · outcome unconfirmed
Now when I run the A/C the windshield fogs up and water condenses on the outside to the point I have to run the wipers.
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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Performed · outcome unconfirmed
Now when I run the A/C the windshield fogs up and water condenses on the outside to the point I have to run the wipers.
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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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
My dash is coming out this winter to repair anything I find.
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.
22 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.
2 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
Now, I have to say that I have noticed no difference in the AC/Heat.
Hi,
I have foam in my AC Vents.
I'm guessing that some soft of air filter has broken up. The foam blows into the cabin when the AC is on. I guess 20years in the Australian heat has caused the material to break down.
It doesnt look like the material from the passenger air filter as described here:
https://www.pelicanparts.com/techart...Air_Filter.htm
Anyone know where it's from and what I do need to do to replace it?
Common symptom. Foam is from a/some flapper door(s) inside the heater/a-c system. Have read some repair documentation seems very involved. There are others who just clean it up for a while until it stops. Good luck with your decision. Might want to search this forum for the repairs.
I followed this instruction,
http://986forum.com/forums/performan...-debris-3.html
. But I could only get to the front metal flap and not the one behind it.
... I just did a search and there are a bazzillion posts on the same thing LOL
My bad. Funnily enough the Porsche specialist wasn't sure what it was - although he was mainly working on Air-cooled models. I dont think he saw many 996s.
I think I'll just hoover out what I can and live with it. Not like it gets that cold here anyway :-)
I am going through this right now as well...there are a few searches to follow on here if you want to go through the troubles. The link above is decent. I think it is more hassle than it is worth. I am in the same mind set as mentioned and just cleaning and then forgetting about it.
Chris
At some point enough of the foam will deteriorate that you won't get hardly any heat. Their is a rennlist member that has figured out a hack to fix the problem so you'll get heat without having to take the dashboard apart. His handle is AMCPILOT, feel free to PM him. My heat is still functioning fine, but some day you'll have to deal with the issue, or go with almost no heat.
Thanks :-)
i was horrified that some of the procedures to replace the foam involved cutting but ups.
ar this point my 996 is 20 years old and vintage in Porsche�s eyes and increasingly rare over here in AU. I couldn�t cut it up! The horror!
Well, mine has been doing this forever and I can no longer effectively direct the vents to defrost/dash vents/floor. Now when I run the A/C the windshield fogs up and water condenses on the outside to the point I have to run the wipers. (Hot and humid here in Mississippi.) I've been having to lay a towel over the defrost vents. Time to do a repair!
My foam is gone, and the heat is now pathetic. Also, as mharrison pointed out, directing the heat is ineffective. My dash is coming out this winter to repair anything I find.
Might want to check the procedure. I can't remember if you go in from the frunk to fix this or not. Removing the dash is a pain in the <expletive>.
https://www.renntech.org/forums/tuto...the-procedure/
Thanks!
I used to own one from the 60s/70s. These new ones are much better.
If the worst I've had to deal with so far is some decaying foam debris them I'm doing pretty well :=D
Yep, it happened exactly the same to me in a GTI MKII G60 that I had
My indy solved the problem just changing the foam for other used in plumbing. It worked perfect actually.
Just thought I would weigh in on this. My 99 coupe started spewing the foam out the vents about 7 years ago. I read up on the issue and decided that dismantling the entire dash to remove the HVAC system was not going to happen. After a while, no more foam out the vents (after I sucked everything out with a shop vac and pick with the fan on high). Now, I have to say that I have noticed no difference in the AC/Heat. No difference in the fan mode or vent/floor/defroster position. AC blows cold, Heat blows hot. And I mean...very cold and very hot. I only get a slight bit of cold air blowing out the defroster vent on top of the dash, and on really humid days it causes some condensation on the windshield. Either adjusting the AC temp up a bit or a quick wipe of the windshield wipers takes care of that. So for me, no more foam out the vents and everything works okay. Just thought I would throw this in there.
Having read it seems there are two circulation control flaps. One for mixing hot and cold and one for directing air to the upper or lower vents.
Right now I have no issues with the AC. I have it set to LOW temp and use the front vents with the fan speed set to low. I'm not getting new foam coming through at the moment. I'm wondering if its the up and down mixer vent thats creating the bulk of the foam debris on my car.
the foam is coming from the flaps of the a/c box.....the dash would need to come out, then need to remove the complete a/c box which houses the evap and the heater core.....from there you could disassemble the box and do your own repair to the flaps or you can buy a new box and go that route...or also buy a new box and then modify the flap doors so the problem will not come back.....the flaps are metal with holes and then they have this foam material that covers the flaps...so once the foam material falls apart and blows out of the vents, you have flaps with holes so the a/c is compromised.....very expensive job but if corrected, your a/c will work better than before....vinnie
