The Cooling System, is the flow of engine coolant through the engine. where engine coolant, driven by a water pump, is pushed through the cylinder block. As the coolant passes through the engine, it absorbs heat. Leaving the engine, this heated fluid enters the radiator, where it is cooled by the air flow entering through the vehicle’s radiator.

Intermittent Temperature Related Engine Problems, Where To Start
Diagnosing intermittent temperature related engine problems, can be a challenge, especially if they affect driveability. Problems that come and go or only occur under certain driving or operating conditions, can be very difficult to troubleshoot. […]