Overflow tank bubbling - ZR-1 Net Registry Forums

Reichert · 03-19-2018

I'm still new to my car ('90) and just finished a bunch of preventative maintenance, including flushing and filling the radiator (about 50/50 mix). I've been driving it around today, running errands in stop and go traffic. Coolant temp is topping out at 230 F (using the climate control readout). When I shut the car off, the coolant surges into the overflow tank, bubbling/churning for a few minutes as the engine is cooling down. Very audible outside the car.

This might be normal, but I'm not sure

Also, the max temp seems a tad high, reading other threads about coolant temps, but the fans are running and the temp doesn't seem to be running away into dangerous territory.

Anything to worry about?

03-19-2018	#1
Reichert Join Date: Feb 2018 Location: Austin, TX Posts: 104	Overflow tank bubbling I'm still new to my car ('90) and just finished a bunch of preventative maintenance, including flushing and filling the radiator (about 50/50 mix). I've been driving it around today, running errands in stop and go traffic. Coolant temp is topping out at 230 F (using the climate control readout). When I shut the car off, the coolant surges into the overflow tank, bubbling/churning for a few minutes as the engine is cooling down. Very audible outside the car. This might be normal, but I'm not sure Also, the max temp seems a tad high, reading other threads about coolant temps, but the fans are running and the temp doesn't seem to be running away into dangerous territory. Anything to worry about?