Quick overheating question

[pbnj22]

To diagnose either thermostat failure or water pump failure can I just remove thermostat and run and if it heats up above operating temp then it's pump and if it takes forever to get up to temp then thermostat?

 

[svt4cam]

Take your stat and put it in a pan of water on the stove and crank up the heat and see if it opens when water starts to boil. I do this with brand new thermostats as I've had a couple of bad ones over the years.

 

[koda2000]

if you're going to go through all that trouble, why not just install a new thermostat?

 

[pbnj22]

if you're going to go through all that trouble, why not just install a new thermostat?

because since he does it with new ones he would have to do it either way lol

but anyway it is safe to run without t stat briefly? no different than having a fail safe one that is supposed to fail open..

i had a coolant leak from my water pump so i replaced pump, all hoses, clamps (with easier ones to get off) t stat and coolant... but after i put all the new stuff in, it over heated, but coolant was still full in radiator and in overfill so i assume either the water pump isnt pushing the coolant around or the tstat is blocking coolant flow.

 

[FIND]

Did you burp all the air out? Did you get a water pump that spins in the correct direction?

It is safe to run without a t-stat as long as you have a gasket in place, it just will take forever to reach operating temperature.

Whenever I install a T-stat, I push it open and stick an aspirin in the thermostat to hold it open. That way, when the coolant first starts circulating, it will bypass the T-stat until it (very quickly) dissolves the aspirin so there is no air trapped by it. The aspirin won't harm your engine either.

Also, the T-stat should start opening before the water reaches boiling. I seem to recall that you shouldn't put a t-stat in boiling water, since it is too hot and can ruin the thermostat. I test them that way too, but with a meat thermometer stuck in them them. If they don't start opening at the temp the box says, I throw them out.

 

[obie]

Also, the T-stat should start opening before the water reaches boiling. I seem to recall that you shouldn't put a t-stat in boiling water, since it is too hot and can ruin the thermostat. I test them that way too, but with a meat thermometer stuck in them them. If they don't start opening at the temp the box says, I throw them out.

So you don't like your thermostats well done?

 

[pbnj22]

So you don't like your thermostats well done?

hahaha im more of a medium rare guy myself lol

 

[pbnj22]

Did you burp all the air out? Did you get a water pump that spins in the correct direction?

It is safe to run without a t-stat as long as you have a gasket in place, it just will take forever to reach operating temperature.

Whenever I install a T-stat, I push it open and stick an aspirin in the thermostat to hold it open. That way, when the coolant first starts circulating, it will bypass the T-stat until it (very quickly) dissolves the aspirin so there is no air trapped by it. The aspirin won't harm your engine either.

Also, the T-stat should start opening before the water reaches boiling. I seem to recall that you shouldn't put a t-stat in boiling water, since it is too hot and can ruin the thermostat. I test them that way too, but with a meat thermometer stuck in them them. If they don't start opening at the temp the box says, I throw them out.

yes i burped it... i recall you telling me the aspirin trick on another one of my threads... maybe its possible i put it in backwards now that i think about it. and about the water pump spinning the wrong way i have no idea.. i just bought one from rock auto brand gates GAW- 43068

 

[FIND]

Yeah, that water pump is right.

So you don't like your thermostats well done?

As with most things, I like them to be good and pink on the inside.

 

[Flash]

When you're testing the thermostat, open it a bit a poke a thread in there then suspenf the t stat in the water while it's heating.
When the tstat opens it will drop.

 

[koda2000]

put it in the wrong way? the pointy end always faces away from the engine.