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Is This A Reliable Test For Thermostat Presence - Car Talk - Nairaland

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Is This A Reliable Test For Thermostat Presence by BluStreak(m): 1:49pm On Jul 11, 2014
During my check to ascertain why my car temperature rises way above half - about 3/4 on the temp dial, I found out that, my radiator upper and lower hose get warm at the same time meaning their is flow of water the moment the engine starts running. Does it mean there is no thermostat in the car? Ordinarily, I expected one side to remain cold since the thermostat stands as a barrier to hold back the flow of coolant pending when the car has reached operating temperature.
Re: Is This A Reliable Test For Thermostat Presence by tyoseni(m): 2:52pm On Jul 11, 2014
BluStreak: During my check to ascertain why my car temperature rises way above half - about 3/4 on the temp dial, I found out that, my radiator upper and lower hose get warm at the same time meaning their is flow of water the moment the engine starts running. Does it mean there is no thermostat in the car? Ordinarily, I expected one side to remain cold since the thermostat stands as a barrier to hold back the flow of coolant pending when the car has reached operating temperature.
Why not remove the hose to physically confirm if the thermostat is present. For your theory, assume the thermostat is stock open it is as good as the thermostat is remove.
Re: Is This A Reliable Test For Thermostat Presence by Ikenna351(m): 3:38pm On Jul 11, 2014
tyoseni:
Why not remove the hose to physically confirm if the thermostat is present. For your theory, assume the thermostat is stock open it is as good as the thermostat is remove.


Not necessary.


Ikenna
Re: Is This A Reliable Test For Thermostat Presence by Ikenna351(m): 3:42pm On Jul 11, 2014
BluStreak: During my check to ascertain why my car temperature rises way above half - about 3/4 on the temp dial, I found out that, my radiator upper and lower hose get warm at the same time meaning their is flow of water the moment the engine starts running. Does it mean there is no thermostat in the car? Ordinarily, I expected one side to remain cold since the thermostat stands as a barrier to hold back the flow of coolant pending when the car has reached operating temperature.

You didn't state your vehicle or brand.

For Peugeots, below is the simplest method of testing presence, absence, failed or working thermostat, without bringing it out from the thermostat housing/cooling system:

http://www.peugeotowners.com/forum/viewtopic.php?f=12&t=8


Ikenna

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