Foam from vents
07-10-2018, 01:41 PM
#17
That's what I figured. Unfortunately mine is sand beige, so black weatherstripping would look obvious. Removing the trim piece (to cover the louvers from the underside or stuff something in the plenum) is far less complicated than taking the dash apart, but still involves removing the A-pillar trim, which is why I've been stalling.
07-10-2018, 01:51 PM
#18
Every dealer and indie here I've spoken with seems well-acquainted with this problem. They say a lot has to do with how much the car has sat out in the sun. The foam in ones that get taken out of the garage on weekends seems to hold up much longer than on cars that are driven daily and parked outside a lot. Also, all these pros have been willing to fix it but advised against it because the foam spewing is self-limiting and they all said the AC cools just as well without the foam, because the majority of air is still diverted out the dash vents. What they said was was it would be more of a problem up north in the cold where the majority of heated air in winter would be in my face rather than at the floor or defrosting the windshield.
07-10-2018, 10:06 PM
#20
Track Day
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There are 3 sets of HVAC outlets (floor, dash, defroster) each of which can be selected separately, so unless the 997 is radically different from other cars out there in this respect, I would expect there to be 3 foam-sealed diverter flaps in the ductwork system controlled by stepping motors.
Every dealer and indie here I've spoken with seems well-acquainted with this problem. They say a lot has to do with how much the car has sat out in the sun. The foam in ones that get taken out of the garage on weekends seems to hold up much longer than on cars that are driven daily and parked outside a lot. Also, all these pros have been willing to fix it but advised against it because the foam spewing is self-limiting and they all said the AC cools just as well without the foam, because the majority of air is still diverted out the dash vents. What they said was was it would be more of a problem up north in the cold where the majority of heated air in winter would be in my face rather than at the floor or defrosting the windshield.
Every dealer and indie here I've spoken with seems well-acquainted with this problem. They say a lot has to do with how much the car has sat out in the sun. The foam in ones that get taken out of the garage on weekends seems to hold up much longer than on cars that are driven daily and parked outside a lot. Also, all these pros have been willing to fix it but advised against it because the foam spewing is self-limiting and they all said the AC cools just as well without the foam, because the majority of air is still diverted out the dash vents. What they said was was it would be more of a problem up north in the cold where the majority of heated air in winter would be in my face rather than at the floor or defrosting the windshield.
07-10-2018, 11:08 PM
#21
I live in Tampa and daily drove a 996.2 six years ago. The 996 started spitting foam from the vents at 100k and didn’t stop till 123k when I sold car. I like the AC cold and the fogged windows were a bummer. I did try rain-X to no avail. My current 2009 997.2 6 speed coupe spent its first 27k in Naples, FL and the last the last two years and 4K with me in Tampa. The 997 does not spit foam but at 31k now, never a daily.