Parts that You Should Inspect in your BMW for a bad radiator

Parts that You Should Inspect in Your BMW for a Bad Radiator

Your BMW’s radiator actively dissipates the heat that builds up in the cooling system.

The debris running through the cooling system cause a blockage to develop in those tight radiator tubes which decrease the radiator’s cooling.

When one component fails to work properly, other parts throughout the cooling system has also run the risk of failure.

The parts that commonly cease working after the radiator goes bad are the thermostat, heater core, and water pump.

Thermostat

In order to control the temperature, the thermostat is placed at the end of the bottom radiator hose and directly regulates the flow of water through the cooling system.

When the engine reaches ideal operating temperature, the thermostat opens and allows the cooling system to flow freely.

But when the radiator stops working properly, too much pressure is put on the thermostat, often causing it to stop working.

And when the thermostat fails, the valve inside gets stuck either open or closed and this will result in the overheating or under-heating of the engine.

Heater Core

Like the radiator, the inside of the heater core has a similar network of small gauge tubing, which works to produce hot air for the heating system.

If scales or debris break away from the radiator piping, it could end up stuck in the small tubing of the heater core.

And when the radiator fails, causing the engine to overheat, excessive pressure and temperatures cause the connections to the heater core to break.

The noticeable signs are that your car windows start to fog up or front floorboards may feel wet to the touch when the heater core starts to leak.

Water Pump

The water pump uses an impeller to continuously move the coolant through the hoses and passageways of the cooling system.

Any contaminants or tough debris breaking away from the radiator will cause abrasions and other damage to the plastic impeller.

When the radiator stops cooling the fluid before it moves past the impeller, the high temperatures could also cause damage to the plastic parts.

Eventually, pieces of the rotating impeller will break off and disrupt the flow speed of the coolant.

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