Posted by jimg.allentown on December 28, 2015 at 07:10:33 from (173.49.143.208):
In Reply to: 3.7 engine temp help posted by old560 on December 28, 2015 at 06:46:48:
Your symptoms seem to contradict each other. Lack of heat from the heater would indicate either low coolant level or low flow rate. Conversely, low coolant would cause the engine temp to rise rather than fall. Low flow rate could be caused by corroded impeller on the coolant pump (commonly referred to as a water pump). There is also a possibility of a collapsing hose, but again, that should show a rise in engine temperature. Replacing thermostat after thermostat apparently does not solve the problem. As much as the problem might indicate otherwise, my gut feeling is a corroded impeller on the coolant pump.
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