Driving uphill Overheating issues

Search "custom radiator project"

You will see what I am doing.

Funny you are a new member here and bringing this up.

 

I wonder if anybody makes a double pass core that would fit this chassis so that the water makes two passes like the old VW radiators at the drag racers use with big block whatever they're running those things would cool anything all aluminum so on. I'm sure I have one in my Corolla on old Corolla not relevant here but I have aluminum desert cooler double pass radiator made by someone in China but apparently did a pretty good job because this thing is 25 years old and the car barely makes half gauge to the floor and running uphill of course it's not a hybrid either but I'm just wondering if anybody has retrofitted such a thing into a Prius it doesn't seem like it would be that hard and there is room I'm not sure what a z u s a is working on I guess I'll have to go take a look I'm not sure that any duct work or higher capacity fans are going to make any difference You're going 75 mph down the road that's 25 mi shy of 100 in any degree weather that ought to get you to regular operating temp not the necessarily the high end of operating ice temperature either although it's been years since I've lived in Arizona or out there in the west I really didn't have many overheating problems in any of my Toyotas but they were also not hybrids then.

 

What’s the miles?

 

If I remember right from the thread he started, the one Azusa's promoting is supposed to be double-pass.

 

Yes I need to go look at his business and see what he's got going on that just came to mind from the old VW radiator in the dragster days those VW scirocco and golf and rabbit radiators were double pass little things but cool like the Dickens.

 

I would look at the exhaust heat recirculation system. It may be stuck open allowing too much heat to pass the temp sensor which is hard wired to the combo meter.


You may be scanning the other temp sensor which is not getting hot enough to turn on the light by itself assuming the water pump is not coding.

 

Yes a Yaris or Corolla will have none of these issues like this I don't care how hot it is outside If it's that hot you'll be dying in short order also as well as the car. This is a this car thing the one you're sitting in the doing it.

 

We have 105f days and plenty of hills at high speeds up to 85mph legally. I monitor temp continously and have for years. No cooling issues and typically stays around 201f under those conditions.



You have a problem that needs repair with oem parts. Hopefully no head gasket or cooling system sealer was used.