So after installing new coolant overflow tube and new coolant resovior cap (old one wasn't holding pressure) and installing a new power steering pump, today while running errands around town :eekthe heater stopped blowing warm air then soon after the temp gauge started to rise. I shut her off and didn't observe any obvious signs of leaking, coolant bottle at proper level still. I did notice the sloshing of water sound by the passenger side dash while driving last week, now this - any thoughts?:eek