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

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Parts that You Should Inspect in Your BMW for a
Bad Radiator
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Your BMWs radiator actively dissipates the heat
that builds up in the cooling system.
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The debris running through the cooling system
cause a blockage to develop in those tight
radiator tubes which decrease the radiators
cooling.
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When one component fails to work properly, other
parts throughout the cooling system has also run
the risk of failure.
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The parts that commonly cease working after the
radiator goes bad are the thermostat, heater
core, and water pump.
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Thermostat
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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.
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When the engine reaches ideal operating
temperature, the thermostat opens and allows the
cooling system to flow freely.
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But when the radiator stops working properly, too
much pressure is put on the thermostat, often
causing it to stop working.
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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.
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Heater Core
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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.
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If scales or debris break away from the radiator
piping, it could end up stuck in the small tubing
of the heater core.
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And when the radiator fails, causing the engine
to overheat, excessive pressure and temperatures
cause the connections to the heater core to
break.
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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.
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Water Pump
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The water pump uses an impeller to continuously
move the coolant through the hoses and
passageways of the cooling system.
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Any contaminants or tough debris breaking away
from the radiator will cause abrasions and other
damage to the plastic impeller.
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When the radiator stops cooling the fluid before
it moves past the impeller, the high temperatures
could also cause damage to the plastic parts.
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Eventually, pieces of the rotating impeller will
break off and disrupt the flow speed of the
coolant.
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