Engine Controls - Tests W/O Codes: Symptoms: Overheating

Check for insufficient coolant.
Check for loose water pump belt.
Check for faulty thermostat.
Check for poor water pump performance.
Check for improper ignition timing.
Check for clogged or leaky radiator.
Check for improper engine oil grade.
Check for clogged oil filter.
Check for not enough oil.
Check for poor oil pump performance.
Check for oil leak.
Check for dragging brakes.
Check for blown cylinder head gasket.