Need help! Gas engine overheating. Cannot resolve.

@ASRDogman I bought this used not too long ago. Hence I am not familiar with the history. It was indeed a bad decision to buy this car, already wasted around 6 months troubleshooting issues with no positive results. I guess I will keep troubleshooting, and one day I will be able to drive it ... Thanks for your suggestion!

 

I would wait on the egr valve until you get a better idea about this engine.

Keep in mind you could get a guaranteed used in Japan (JDM) engine with accessories for about $1k from "JDM Place of Houston" located in NW Houston. 713-742-5000

You could use distilled water for testing and then drain at least a gallon and fill with Toyota concentrated coolant.

 

Okay, so I take it that it was NOT running, running correctly?

That is always risky. You should do a lot of research on what the cost's of repair
will be.

Despite what some say about the 3rd generation Prius, it IS a good car.
And just like any other car, there will be cost to keep them running and repair them.

And not knowing how the Prius works makes it more difficult for you. And you have to have
the proper tools to work on them and repair them. And those tools cost money.

If you are patient, and go step by step, you will eventually figure out what the issue is.
I do believe it is something simple, I could be wrong. But from what I've been reading on here,
it usually is.