Test it. Only way to tell for sure.
Originally Posted by Reaper:
Originally Posted by Jecs:
can i just boil it in water?
Sure you can.
ok thanks ppl,
i'll test it out.
To test it properly you really need a thermometer so you can tell what temperature it opens at.
MY RIDE
I thought I was wrong once but I was mistaken.
If you have no means to measure the water temperature, you can get a general idea if the thermostat is working OK if it starts to open just as the water begins to simmer, that is, tiny bubbles appear on the bottom of the pot. And it should be fully open as the water starts to boil. It should open smoothly with not to many big jerks.
This is a guide only...Though, if in doubt, best to fit a new one, as a faulty thermostat will play havoc with the engines operating temperatures.