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Old 07-17-2017, 06:11 AM   #1
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Did you or anybody else try the cutoff valve for the heater core? If so how did it work? Thanks
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Old 06-22-2017, 08:06 AM   #2
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My foam is long gone. AC still works great but my heater is not as effective as it once was. Luckily, here in FL, heater is effective enough.
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Old 06-22-2017, 11:23 AM   #3
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Yeah, I definitely don't have that valve and the heater core is always hot.
I think 78F350 is correct. That valve appears to be for the tiptronic.

Thanks for the DIY, by the way. I never planned to do the repair through the heater core access hole because it did not address the other flap. With your method, I had it done in less than 2 hours and I'm now foam free!

Last edited by particlewave; 06-22-2017 at 11:27 AM.
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Old 06-22-2017, 11:30 AM   #4
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Quote:
Originally Posted by particlewave View Post
Yeah, I definitely don't have that valve and the heater core is always hot.
I think 78F350 is correct. That valve appears to be for the tiptronic.
Thanks guys. My sources show the Tip with 2 of these valves - 1 for the trans and one for the heater. I presumed the manual trans cars still have one for the heater.Why else is it labeled a "Heater Control Valve" ?:
Just search for ECS Meyle 92857457303.Sorry Pelican, your site search did not yield anything except for a 944.The Vertex site confirms it fits my 2001 Bxtr S 6 speed..
Another issue is that a Thread contributor(see 26 below) commented that the lack of foam seemed to have no effect on his a/c in Florida. That seems strange.
So maybe back to the original plan. Find an easily accessible spot to insert a seasonal valve on the input side of the heater core ?

Last edited by Gelbster; 06-22-2017 at 12:30 PM.
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Old 06-22-2017, 11:40 AM   #5
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That is weird...maybe Porsche added one to all models in later years?
Or maybe I'm just missing something
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