[2KGTrd]

and if your blowing coolant out your little tube thats a good indicator that your either over full, air in the system expanding and pushing coolant out. or a head gasket gone out and your cylinders are actually pressurizing your cooling system.

OP did you un-screw the little cap on the right section of the resivior when you tried to clear the bubble?
The best way to do clear the system is jack the front up slightly or park on a hill.
Open resivior caps one on the left and right.
Start car when cold and turn heater on full blast.
when the air gets hot then the bubble is cleared.

You may have to screw the little cap down and unscrew it a few times to help clear it.

An engine shop can do a simple dye test to see if your head gasket is blown.

 

[2KGTrd]

he said that the hose going into the heater core was hot but the one coming out remained cold.

That's because there's an air bubble in the core.
Bleed the ******* and see if your problem still exists.
Also what thermostat did you replace your with?

 

[2KGTrd]

even if your gonna flush it you still need to bleed the system so you can drive the car to wherever to get it flushed...
I'd fine out what kind of thermostat. I wouldn't put anything but OE on for that type of part

 

[2KGTrd]

For example: If I have green coolant, I would have to burp it and refill with green... but that only means I'm gonna have to do it again once I get the flush for the Toyota coolant.
BTW, I've been riding around with the car like this since June but I just recently noticed the heater didn't work because I didn't need it back then and I thought the temperature going crazy was the coolant temp sensor acting up.

:faint:
Might as well blow the ****ing motor up then jesus!
A flush usually includes a refill, and the mechanic doing the re-fill will bleed the system for you.
I really can't believe that you thought it was a bad sensor, moreso did this without looking up how to do it or even double checking your work until now.
Don't be suprised if you have more problems with that motor down the road....

 

[2KGTrd]

They said the hoses are leaking and in horrible condition, leaking radiator cap, oil leaking from oil pressure switch and some other part I don't remember...

I accomplished NOTHING today. I just took my car back and they didn't charge me anything.

Well atleast you now know what you have to do to make your car run right.
All those parts are easy to swap. Really are. My pet ferret could do it....

And they didn't charge you which is another plus

 

[2KGTrd]

look it up on autozones website!
Hell call toyota and ask them mae.