|Where's the sensor ?
Question : Where is the temperature sensor or detector located in
a car's engine? The sensor provides the input that activates the temperature
gauge on the dashboard. Is it in the back cooling water system and in
contact with water or on the solid metal of the engine block close to the
My friend said the sensor is in the cooling system. I believe it is in the solid metal. If it is in the
cooling system and if for any reason there is no
water, the sensor cannot accurately sense the heat
from the combustion chamber and give a low
reading on the temperature gauge when the
engine is overheating.
Can you give your views?
Answer : The temperature sensor is always in contact with
the coolant and is screwed into the water jacket surrounding the cylinders. It
does not sense the temperature in the combustion chamber as that temperature
is way past the boiling point of the coolant. When the
engine starts to overheat, the coolant in the block will
usually start to boil and the sensor will sense this and
show an immediate rise in the temperature.