my son bought a 1999 legacy with 92000 miles.he had it about 2 weeks it started overheating.temp gage would be about half way up but no heat inside.went up the road about 1/4 mile temp went all the way up.so I changed the thermostat.its not a Subaru thermostat but an oem replacement.i checked the new one and the old one and both opened fine.i also changed the water pump and timing belt since the miles were getting up there.still same problem.ran for about 30 minutes,i should have all the air out.temp gage half way still no heat.i took heater core hose off where they attatch at the engine. and started the engine.i got aliitle steam out the top one but nothing out the one that comes from the waterpump.topped off the radiator and got more steam.should the coolant flow through the heatercore at all times?should coolant come from the hose at the water pump by the thermostat or just when the thermostat is open.im sorry I don't know anything about subarus.if anyone can help please let me know.thanx tim.
