Hi CLK320MIA,

Thanks for the response, I'll stop by the local MB parts shop to check out if they do have the check valve of any sort that I can use. Do you know why there are two vacuum lines connected with a "T" to the center vent flaps on the W202 ? If I can find the check valve, I'll connect it between the "T" and the center vent flaps. BTW, Again, thanks for the response.