I have changed the thermostat/t-stat gasket. Still no heat, but had added problem of a bunch of white steam pouring from under hood. As it turned out, new gasket was faulty (had crack in it). Tested new t-stat by dropping it in boiling water. T-stat worked great. Installed with new gasket - still no heat. I do not notice any leaks, water dripping in on passenger side. Engine does not overheat. Any ideas as to what is going on?
Blowers work... just no heat.