Thermostat test

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HOU02LSV8

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I have heard that you can test a thermostat in boiling water, is this true?

If so what I am looking to happen?

Overheating 02 LS V8
 
It works better if you have a thermometer. Hang the thermostat in a pot of water with a wire so it doesn't sit on the bottom. Heat the water and watch the thermometer as it gets hotter. The thermostat should open around 190 - 195°F.
 
Pleas point it out...

getimage.php.jpg
 
The new thermostat is not that expensive. If you're going to bother opening up the housing and deal with bleeding the air out of the system you might as well drop the $20 and just replace the thermostat. Then there is no worry whether it's working quite right or not.

FYI, I'm in Houston as well with an 02 LS V8. I just finished troubleshooting an overheating problem, so let us know what the symptoms are and and maybe I or the other guys can help guide you.

Duke
 
Not at all wise if you want it to run well. The engine needs to reach the correct temperature, and it won't do that without the correct thermostat. If you are having overheating problems (and the thermostat is working correctly), then removing the thermostat will not solve them.
 
oh I agree! a working thermostat wont be any different than no thermostat. I'm just saying pull the damn thing out. If the problem goes away, you know what was wrong. And you dont need to hurry and get the new one in either. But you will want to eventually.
 
my car is running without one right now actually. the old one was sticking and I didnt feel like buying the new one. Looking for a colder temp one that will fit.... just not actively looking
 
Dukester said:
The new thermostat is not that expensive. If you're going to bother opening up the housing and deal with bleeding the air out of the system you might as well drop the $20 and just replace the thermostat. Then there is no worry whether it's working quite right or not.
Click to expand...



Duke I always recommend to take the extra few minutes to even test a new thermo before installing it. Even new ones can fail to open properly sometimes.
 
For those in hot climates, this time of year? no thermostat is probably fine, as the coolant most likely needs full flow anyways. Granted, it will take the engine a bit longer to reach full operating temp, and full operating temp is when an engine is running at max efficiency/putting out fewer pollutants into the air.
 
Well I got the thermostat out but broke the thermostat housing in the process. I am in the middle of trying to replace that but the 2 bolts in the back are IMPOSSIBLE to loosen or tighten back down. I had to break the remaining housing off the enging to get the 2 back screws off. Great idea, except it doesnt help me with getting them back on with the new housing I bought! Any ideas?????:confused: :confused: :confused: :confused: :confused: :confused:

As far as the thermostat goes, my old one was def bad. I put both in a pot of boiling water and now I see what it should have been doing.
 
I removed the air intake tube when I changed my tstat. That made everything REALLY easy to access.
 
Maybe the attachment will help. From one of the DIY auto sites.

Duke

HOU02LSV8 said:
Well I got the thermostat out but broke the thermostat housing in the process. I am in the middle of trying to replace that but the 2 bolts in the back are IMPOSSIBLE to loosen or tighten back down. I had to break the remaining housing off the enging to get the 2 back screws off. Great idea, except it doesnt help me with getting them back on with the new housing I bought! Any ideas?????:confused: :confused: :confused: :confused: :confused: :confused:

As far as the thermostat goes, my old one was def bad. I put both in a pot of boiling water and now I see what it should have been doing.
Click to expand...
 

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