Originally posted by DemonSVT:
Also have the heat on so it cycles through those lines and the heater core as well. (just like when you flush the system)
I'm pretty sure the coolant always runs through the heater core in the Contour. The same goes for most anything built after the early 90's. This helps the heater core not corrode due to sitting water. If anything, running the heater will make the thermostat open up later.
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