how do i flush the heater core?


Asked by Jan 06, 2015 at 03:31 PM about the 2003 Dodge Dakota 4 Dr Sport Quad Cab SB

Question type: Maintenance & Repair

only warm air after engine has reached normal operating temperature.
I think the core is clogged. replaced the thermostat found a lot of rust on top.

1 Answer


Probably best to just flush the entire cooling system, radiator and block, with the heater running full blast. It says Durango but its same:

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