still overheating after radiator replacement, radiator overheating engine temperature Options

[Terzin1]

Hi all

Last week my radiator cracked at the fill neck. I replaced it with another and that seems to have gone in just fine. It holds fluid without leaks. I also picked up a new thermostat but didn't install it yet.

So... today I filled up the radiator with coolant and went for a test drive. It started to overheat again so I stopped, let it cool a bit and opened the cap to fill it and let the bubbles come out as it ran, heat was on. The reservoir was bubbling up too. I also unplugged the fan sensor so that they could run continuously just to be sure that they weren't part of the problem. Well, the fans work and seemed to slow the pace of the temp gauge rising, but I'm still overheating. Tomorrow I'll swap in a new thermostat. What else should I look for if that doesn't solve the problem?

[VavAlephVav]

If you let it run like that for a little while, it might take 30 min, every time the fans kick on the coolant level will go down a bit and you can add some more antifreeze to it.
Also make sure the temp control inside is turned all the way to Hot so that the valve to the heater core is open.

My friend said he used to have a system that would pull a vacuum on the radiator and suck the antifreeze into it. Said he bought it just for Toyotas.
If you don't have one then you just have to add a little more at a time and wait for it.