Changed the thermostat a while ago and did a coolant flush, helped a bit but still didn't heat very well. At the end of august I spent about a week in my garage changing the heater core (I'm new to do-it-yourself and it was a bitch of a job) and that helped a bit more but now that it's getting freezing cold outside the heating still doesn't work like it should. It can blow out a lot of air but the air just isn't hot like it should be. Regardless of how long I drive around for the air is never warmer than mild whereas every other car I drive in puts out super hot air. Overall this is a very annoying issue that I just can't seem to fix, any suggestions?

 

Did you do the proper bleed procedure to make sure there is no air in the system?

Whats your temp gauge reading like?

 

the temp gauge always goes up to the middle when it warms up and stays there so that's fine. I also searched a bit and people suggested checking the hoses going to the firewall to see if they are hot and when I felt them today they felt warm but not hot (could be a judgement issue?), what could that mean?

 

anything?

 

Either there is airlock in the system or the flap valve that directs air over the heater core isn't working.