[QUOTE="Daniel J. Stern"] Sounds as if you failed to bleed the air out of the cooling system after replacing the thermostat. That's what the screw-in fitting atop the water box (where the thermostat goes) is for. NEVER do this; you can be very badly burned. It's good to drill a 1/8" hole in the thermostat flange *just* outboard of the valve poppet, and when you install the thermostat put this hole at the 12:00 (top) position; this helps move air forward and evacuate it. But for The screw plug is often frozen in place, so a decent alternative procedure is to put the car with the nose on as sharp an upward angle as possible, loosen the radiator cap and run the engine at a fast idle until it reaches full operating temperature and for about 10 minutes thereafter.[/QUOTE] Hmmm.... loosen the coolant temp sensor at the thermostat housing while filling the radiator, the air will get pushed out to the thermostat level and the thermostat will open without all that incline crap. This is not an any shop manual therefore you would have to work on these cars to be able to see what is going on!!
