Uncommon Cooling System Problems

Problems not requiring disassembly of the cooling system:
^ Large obstructions that block the radiator or the air conditioning condenser; The following are some examples of large obstructions:
- Front mounted bike carriers
- Front mounted tire carriers
- Bug guards
- Vehicle bras
^ Auxiliary oil coolers
^ Ice, mud, or snow
^ Engine oil overfill
^ Missing or damaged air baffle or lower air deflector

Problems requiring disassembly of the cooling system:
^ An incorrect or damaged fan
^ Faulty emission system components (could cause overheating at idle)
^ Positive Crankcase Ventilation (PCV) valve
^ Pressure testing the cooling system with the radiator cap installed
^ A faulty water pump
^ Plugged or incorrect radiator
^ Internal system leaks
^ The cylinder head gasket
^ A cracked engine block
^ A damaged intake manifold or intake manifold gasket
^ Plugged coolant passages in the cylinder head(s)
^ An incorrect thermostat that has been installed