A malfunctioning car heater in the middle of winter is no good, but oftentimes the cause is pretty straightforward. Here are the five most likely reasons.

The radiator fan (or fans) pulls cooling air through the car’s radiator. Positioned between the radiator and engine, cooling fans are particularly helpful when the car is stationary or moving at ...

Radiator hoses are large-diameter rubber hoses that carry engine coolant between the engine and radiator and back toward the water pump. Radiator hoses should be inspected as part of routine ...