Used to work at a thermostat factory. I ran an assembly machine that put the element in the middle there together. I made about 7500- 8500 of those things day for a few years. If I remember correctly there is a copper and wax pellet inside the brass casing the pressure of the wax melting from the heat makes it open and the springs close it. The ones like that one we made went into Toyota cars. We also made the integrated thermostats that had the injection molded casing.
If you didn't know, there's a special position to install. The thermostat. The open port on the thermostat is supposed to be aligned with open port on the manifold so that whenever the thermostat open there's no restriction on water flow.
Thank you. It’s a great explanation of how thermostat works. It’s always good to test them out before replacing with new one. Mine turned out to be good, just needed to do a flush and add coolant, no more issues.
That type thermostat with the disc down there all by itself is called a bypass type. As it opens at the top to let water flow to the radiator, that disc also extends to block the bypass/recirculation port to force the warm fluid towards the radiator… i have seen people remove the thermostat trying to get an overheating engine to run cooler, and it will not on a bypass type cooling system as the fluid just continues to take the path back thru the bypass port and overheat, unless it is blocked…
That definitely explained my answer, my car just got a new thermostat because my car was overheating, still overheats because the coolant is probably clogged Tested out the old thermostat, didn’t open at all on a 153F water
Please I have a concern I need help with. I have Toyota Sienna XLE 2000 model that has been well for me for a long time. However I discovered that the radiator fans aren't spinning. Instead my engine heats up after driving for a while with white smoke coming out of the engine bay. When I pop open the hood, I see coolant splashed everywhere. I can't detect where the coolant is splashing out from, because I can't seem to find any leaking hosts or caps. What could be the problem?
@@Motorcarnut I do understand heat expands things. So heat expands something that pushes the spring and opens up coolant through way. I want to see that animation. :) I'll find one.
Never even tried to figure out how these work, thanks for explaining
No problem! Thanks for the comment
So simple, reliable and relatively cheap. Brilliant engineering.
Yes, it is.
Thank you RUclips needs more videos like this not stupid useless entertainment
Thank you very much! Really appreciated
Awesome. I remember when my dad show me this with boiling water when my kia kept overheating.
Used to work at a thermostat factory. I ran an assembly machine that put the element in the middle there together. I made about 7500- 8500 of those things day for a few years. If I remember correctly there is a copper and wax pellet inside the brass casing the pressure of the wax melting from the heat makes it open and the springs close it. The ones like that one we made went into Toyota cars. We also made the integrated thermostats that had the injection molded casing.
Those are the fail safe ones you’re talking about. When they fail the thermostat will go full open so engine won’t overheat.
Are thermostats reliable and long lasting ?
@jetboy770371 absolutely
If you didn't know, there's a special position to install. The thermostat. The open port on the thermostat is supposed to be aligned with open port on the manifold so that whenever the thermostat open there's no restriction on water flow.
Of course I know but others may not. Thanks for the extra information!
Thank you. It’s a great explanation of how thermostat works. It’s always good to test them out before replacing with new one. Mine turned out to be good, just needed to do a flush and add coolant, no more issues.
Thank you! Awesome! That is smart and you saved money!
That type thermostat with the disc down there all by itself is called a bypass type. As it opens at the top to let water flow to the radiator, that disc also extends to block the bypass/recirculation port to force the warm fluid towards the radiator… i have seen people remove the thermostat trying to get an overheating engine to run cooler, and it will not on a bypass type cooling system as the fluid just continues to take the path back thru the bypass port and overheat, unless it is blocked…
Great extra info, thanks for sharing!
Wow!!! I like this well done bro for the explanation 👏 👍
Np problem, Thanks for the comment!
I am used to thermostats like that. But the one my vehicle has is a fail-safe, they call it And it acts totally different than the old system
Yes when they fail they usually get stuck open not to overheat the engine.
Short sweet simple honest, thank you sir
Np problem, Appreciated!
vehicles now: sensors everywhere
Ha, yes they do!
simple and cleaver that how all car parts should be not like now 5 year warranty is over and car falls apart.
I hear ya!
That definitely explained my answer, my car just got a new thermostat because my car was overheating, still overheats because the coolant is probably clogged
Tested out the old thermostat, didn’t open at all on a 153F water
Great diagnosis!
I checked, in cold state there is small gap in thermostat volve ,
Is that fine or need to change it ?
Replace it
@@Motorcarnut thanks
Thanks friend
Any time!
Man i did this as a kid 😂😂😂😂
Brings back memories?
Where diid you find a 170 degree thermostat? I need one for my 1987 C4 Corvette
You have to look up you make and model if they make one
Tested mine like that and it never opened even with the water being 200
No good!
Thank you so much.
Always welcome, thanks for the comment!
Man thanks for this video this is similar to the one I have and this helped me a lot!
Sure no problem, appreciate the feedback!
killed that one. It's a great example! Awsome video.
Thank you! Appreciated!
Oh wow ! Now I finally saw it operating. It knows two ways of being dead. Either stay open or stay closed. The latter will cause engine overheating.
Correct
Wow ❤
Great video explaining how this mystery item works... Change one because the truck was overheating
Thanks for the feedback!
It also lets coolant into the engine
Correct!
I bought a couple of thermostats that were bad, so now I'll try this check to make sure before I install it
Fool proof way. Nowadays they make things cheaper and cheaper
Great visual, great audio, great educational video and experience.👏🏾👏🏾👏🏾👏🏾💯✊🏾
Much appreciated!
Please I have a concern I need help with. I have Toyota Sienna XLE 2000 model that has been well for me for a long time. However I discovered that the radiator fans aren't spinning. Instead my engine heats up after driving for a while with white smoke coming out of the engine bay. When I pop open the hood, I see coolant splashed everywhere. I can't detect where the coolant is splashing out from, because I can't seem to find any leaking hosts or caps. What could be the problem?
Maybe a coolant fan switch or coolant fan itself is not working. Be careful hopefully you didn't blow the head gasket by overheating the engine.
such a good video, thanks
Glad you liked it!
Great vid
Thank you! Appreciated
Wow. Ok. Good. I was always curious about this because i wondered if the gasket could inhibit it from opening
No problem, thanks for the comment.
Great video thanks
Thank you!
Thanks man
No problem
I did thr same with my old valve
That’s how you know if it’s good or not.
Why should keep thermostat close some time?
When car is cold thermostat is closed to radiator so engine can warm up faster
@@Motorcarnut you are right . Thanks.
@shawqijumaa119 no problem
Why it doesn’t have the pin that releases the pressure
Not all have them
ok
Thank you brother. Can I ask when should I change it? I bought my car in 2020 and it has 46 thousand miles on it
Next coolant change would be ideal or 2 years
@@Motorcarnut Thanks man May Allah bless you and your family
@Z11yad and you as well! Take care!
🔥
Thank you!
But what makes it open and close is the question?
The temperature of the coolant. It's basically a metal spring that when heated expands and when cooled it contracts.
170f and boiling temperature is a bit off
Yes, but most people get the point of the video.
You mean into the engine bro the engine needs cooling not the radiator
Hot coolant circulates through the engine then goes to radiator to cool down some then back into the engine.
So the part with the oring dosent move at all correct ?
That’s correct
Question, there's coolant in the radiator already, so when the therms open up it lets more coolant in?
Correct and then it circulates through the radiator to get cooled before going back into the engine.
@@Motorcarnut
Thank you for the explanation! I appreciate it.
@moto__shark sure no problem!
Nice demo !
Glad you enjoyed it
🤩
Welcome
Isko kaise check kare gadi k ander h ya nahi
Not sure what you mean? Sorry
Maybe you can do how a coolant temperature sensor works
Will do, thanks for the tip!
I did
i believe you gotta check the ohms with a multimeter
I mean watching how something operates is different than how it works. Absolutely no description on that aspect.
It’s the same. If you can’t understand from the video, I can’t help you.
Rad!
Thank you
What country are you from?
USA
There is inside wax if 90 ° heat it opens the thermostat
I think you’re talking about fail safe thermostats
TAKE IT OUT you don't need it burning your oil
What? Of course you need it.
@Motorcarnut if you need your Heater yes if your enigne Turbo no way
@Caleb-lbj engineers design engines with thermostats for a reason.
@@Caleb-lbjyoure a genius. please dont ever come to melbourne, we dont need someone of your intellect getting around the streets
We just hold a lighter to it and watch it open
You can do that just to see it work.
It's cool to see what it does. However, HOW? ;)
Expansion and contraction
@@Motorcarnut I do understand heat expands things. So heat expands something that pushes the spring and opens up coolant through way. I want to see that animation. :) I'll find one.
How tf did somebody come up with this?!?!
That was a long time ago
Rad….
-iator
Thank you
i tried boiling my stat and nothing happened...
Then it’s bad
107 or 170 what the hell u say
170 degrees
@@Motorcarnut makes sense it was 100+ degrees outside and i think my thermostat was suppose to open
@raymondcalderon1190 it definitely should