Tom_Phillip
Member
I have been trying to determine the source of low heat output on my '96 Passat TDI. Last weekend I replaced the thermostat with a 195F unit and continue to have low output (65F) out the vents even with the temperature guage at 195F.
I was chatting with another TDI'er the other day and the issue of black foam in my vents led him to believe that the linner in my heat box is compromised after 10 years and the air mix is letting too much cold air past the heater core. It makes sense but I would like to see if anyone else has experienced this problem and if there is an alternative to disassembling the entire dash to get to the heat box.
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Tom Phillip
Waldo, WI
I was chatting with another TDI'er the other day and the issue of black foam in my vents led him to believe that the linner in my heat box is compromised after 10 years and the air mix is letting too much cold air past the heater core. It makes sense but I would like to see if anyone else has experienced this problem and if there is an alternative to disassembling the entire dash to get to the heat box.
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Tom Phillip
Waldo, WI