Posted by ASEguy on October 19, 2011 at 04:02:45 from (68.186.162.134):
In Reply to: Dodge pickup heater posted by andy r on October 18, 2011 at 21:21:44:
You need to verify coolant temp. You don't want to get the 4.7 too hot. Without the restriction in front of the radiator, and at operating temp., feel the upper hose. If it's HOT the thermostat isn't the issue. Next feel both heater hoses at the same time. They both should be about the same as the upper hose. If one is warm and the other cool it's a heater core blockage problem. If they are both hot then it's probably inside the cab. Heater core blockages can be blown out usually with shop air, but I don't recommend it unless you have the experience in doing so. If you do decide to make the heater core "sneeze" make sure to have both heater hoses off. Hope this helps. Gerard
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