so my car was at the shop for heater/ac issues and the mechanic said the coolant system pressure was too high.

he couldn't figure out why, he put in a new thermostat, that didn't help. he thought it might be a water pump issue.

here's the real question, when I got it home I was losing water. through the overflow tube I think.

while trouble shooting I took the top radiator hose off. water was pumping out of the hose and radiator (two different directions) Is that normal?

I ran water from water hose into water tank to keep it all flowing and cool. and for several minutes..

should I just get a new radiator cap?