My 02 sc430 started overheating one day when I was going to the the store VSC ON/OFF light came on and a bit of smoke was coming out luckily I got it home and discover my radiator had a crack in it. I spent today taking it out and putting in another one in and got it running again but still getting to hot and I'm not sure what else could it be. Can anyone give me advice or know what else could be the problem.

 

Welcome to the forum!

I'm gonna assume that you installed the radiator correctly, have the correct antifreeze mix, and do not have any leaks.

With that assumption, I'd be looking at thermostat or possibly fan (assuming that you run hotter when stopped).

 

Thank you
I believe I got it installed correctly the fans are running, no leaks and the anti freeze was a 50/50 mix (hopefully that's the correct mix)

 

Might take an instant read thermometer and take a reading at the location point of the thermostat. If that is "normal", chances are the thermostat is ok. If the temp reads normal it could just be that your sending unit needs to be replaced. I've had them go bad before and the car temp gauge reads "hot" when it really is not.

 

Making sure that there is no air left in the system. Including the heater core

 

Back to what JohnnyCake said about your thermostat. It may be stuck shut. Starting with a cold engine, remove the radiator cap and watch the coolant as the engine warms up. You should see coolant flow when the thermostat opens. If you never see coolant flow then it's stuck shut and must be replaced. If that isn't the problem then you might have a delaminated upper or lower hose that's swelling internally when it gets hot and subsequently closes off the coolant flow. I've had that happen to me many years ago - to a new hose!

 

JohnnyCake...don't mean to highjack this thread but I noticed that you say you have disabled the NAV "I agree" notice. How is this done?

 

Went back outside to see if the coolent was flowing and I looked bone dry

 

It's likely that it was never full. System probably needed burping and only looked full. Keep adding fluid and watching the flow of coolant as the engine warms up. You might just be good to go!

 

How's the circulation? Is your water pump operating correctly? Also, did you use distilled water in the mix?

 

So listened to both of you and my car seem to be running well now. The temp hasn't moved Attachment 394402. Ty all for your help I truly appreciate it