pazuso

ran 125mph @ ~5500rpms for like 15 secs (excluding climbing to 125mph). aircon was off. water temp jumped up really high

this is not the 1st time i ran this fast, but this is the 1st time it overheated coz of running this fast

my temp sensor is broken, so the fans wont turn on if my aircon is off. however, i switched it on immediately after i slowed down (which made the fans turn on.) but isnt it ok not to run fans when your running pretty fast? coz the air's gona blow through anyway

radiater is the stock calsonic. no leaks. have water in it. *some* coolant.
u think adding more coolant will help?

the water from my reservoir literally boiled and was smoking from the hood

 

pazuso

or do fans NEED to turn ON even when your running fast?

Slartibartfast

Above 30 mph or so, there is enough airflow to adequately cool the engine without fans. Assuming your cooling system doesn't have any air in it, you merely found out the hard way that the radiator is a bit too small.

__________________
Bruce in Houston
1990 Acura Legend LS, stock (so far)
1994 Nissan Sentra SE-R (original owner) w/ $tuff, converting to ITA (even more $tuff)
1998 Suzuki Bandit 1200S w/ $tuff, W.W.B.O.C. #101
2002 Dodge Dakota tow beast, stock!
RIP swwwinger