Heat Issues

#1
I just bought a one owner 2008 Corolla. Great little car but I'm having issues with the heat. Only warm air when the fan is on low of off. I changed the cabin filter, flushed the heater core, flushed the coolant (3 times) and replaced the thermostat. I burped it with the front end jacked up for 30 minutes or so. The only thing left is the water pump. Thoughts?
 
#3
Thanks for reply. It has never gone past half on the gauge. I cant get it to overheat. What can go bad on a heater core? It passes water and was clean when I flushed it.
 
#4
If heater core is ok it could be your thermostat is to low a temp. Check with parts place that you get parts from and see if they have a higher temp thermostat. Thermostats are set to open at a set temp. If it opens to soon your car won't get as hot as it should. You may have gotten the wrong thermostat.
 
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