Heater Problems

[Vstemd]

i have a 97 vs esteem and i am having problems with the heating

when i switch the heater on it will blow out a nice hot temperature for a solid 3 seconds before deciding enough is enough and blowing out the worlds coldest air, as i live in geelong and its around winter im sure you see my problem lol

any help is very much appreciated

[hako]

Make sure you don't have an airlock by bleeding air out of the cooling system - undo bleeder screw which sits on top of thermostat housing.
Also check the heater tap is working - with engine warm, idling and temp dial turned to hot check heater hoses at bulkhead where they pass from engine bay to cabin - they both should be hot....maybe one hotter than the other. If not hot check heater tap vacuum - if vacuum exists then maybe heater tap is blocked. If you have climate control your heater tap may be different.