QUOTE (garthmcm @ Jul 21 2009, 11:18 PM)
I am looking at a '98 Taurus for sale. Supposedly owned by the sellers Grandmother... It's in real good shape except that there is no heat from the heater. The fan blows, the AC cools, but no heat comes out. After reading the posts, I have eliminated stop-leak and low coolant, and I think I learned that if the blend door actuator fails, it fails hot. I was hoping this would be a blend door issue and easy to fix. I appreciate any ideas on what this might entail to fix it, Thanks![/b]
Yeah, sounds like the heater core is plugged. There are two hoses at the firewall behind the engine that feed from the thermostat area of the engine and the waterpump. These two hoses connect to the Heater Core. If one is hot and the other is warm when the car is at NORMAL operating temp then the heater core is plugged.
Either back flushing it will solve it or replacing it will solve it.
Kinda hard to rule out 'Stop Leak' without seeing what is in the core itself. I have had my bull for 4.5 years now and it was a fleet vehicle before that. For the longest time I had weak heat. When I got around to replacing the Heater Core the amount of stop leak that was in there was insane! I could barely blow any air through the core when i removed it.