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Possible Locations Or Cause Of Obstructed Coolant Flow

WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, and 2002 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
  1. Pinched or kinked heater hoses.
  2. Improper heater hose routing.
  3. Plugged heater hoses or supply and return ports at cooling system connections.
  4. Plugged heater core.
  5. Air locked heater core.
  6. If coolant flow is verified and outlet temperature is insufficient, a mechanical problem may exist.