scoopumup1

had the same problem in my 93 sc300....no heat, just blew cold air. after much caution, i decided to try hooking the two vacuum lines together. INSTANT HEAT!!!! all i did was unhook the two small 1/4 inch tubes and tape them together with some electrical/duct tape. I plan on getting a new valve asap, just trying to find a new one at a good price.