I'm back. I had heat (see former post - NO HEAT) for about 3/4 days after reversing the hose that goes to the heater core input (output went into a container)...then it was back to the way it was before, blowing air that wouldn't even get warm. Today...I pulled the hoses off the heater core and hooked the garden hose up to it and flushed it out good. Nothing strange came out...just Dexcool...then water. After starting the truck, with the hoses still off and the rad cap off, I got about 1/2 gallon of Dexcool out of the hose that runs from the thermostat side. The truck was cold. I could see getting *some* Dexcool from the hose, but 1/2 gallon? Seems a lot to me when the thermostat should be closed. It sounds to me like I may have a stuck thermostat (yet the needle on gauge is almost normal, only one peg down than what it normally is). If so, why does it start working when I flush the heater core? Or...could I have an air bubble in the heater core? What about the wrong amount of Dexcool...can I be over-cooling it? Do you mix this stuff with water like the regular anti-freeze? (Hey, I'm learning!).
Ideas?
B|ondie