Engine Cooling problem
1995 Subaru Legacy 4 cyl All Wheel Drive Automatic
I started car on morning - let run approx 10 minutes to melt ice on wibdoa as normal, heater still blowing cold after driving less than 1/2 mile started to heat up. Turnede around and came back, heated rapidly. Have already replaced thermostat, radiator, & head gaskets. Still heating up while blowing cold air thriugh heater. Water pump is not leaking or making noise, shaft felt good without ay play. Probably a blockage somewhere in water system but hoping someone has run across this and can tell me wher to start looking.