Have you tried seeing if both heater hoses going into the fire wall get hot like I suggested?You said the engine gets to normal operating temp so I wouldnt suspect a thermostat issue. Also the heater feeds for coolant bypass the thermostat anyways.
January, 9, 2012 AT 9:07 PM
I have one hose at the firewall that is hot and one that is cold
January, 9, 2012 AT 9:10 PM
Then it sounds like your heater core is restricted.