Hi everyone, I have a honda civic si 1999, and my heat doesnt work so well. It stop working so good after my car stereo was stolen. The theives kind of took out my whole heating control thing, so i had to force it all back together. I also changed the thermostat and that helped a little bit. Does anyone know what else I can check to fix my heat. My heat is basically not so hot, the heat is warm air only. Mostly warmer on the vent that is located on the drivers side. Thanks.

 

While figuring out how to fix the problem, you can manually open the heater hose valve on the firewall to get some heat in the cabin:

 

Are u sure this is gonna work? I never touched anything in the first place.

 

The thieves obviously did. Try it. It's a simple thing to do.

 

Try what RonJ said worst that can happen is nothing gets better.
Then check if something has been knocked loose by the thieves tearing out the radio and the heater panel.

 

did u take out ur whole center counsil??? there r wires that connect to it that come close to the radio they might of knocked em loose

 

Yea I did take the whole thing out, but I have no idea which wires to mess with. I'll just try what the diagram saids and give u guys an update. thank a lot.

 

Since the 99-00 Civic went to an electronic CC (for the hot/cold **** vs the manual cable slider that the 98 & older civics had) so the thieves did something to your wiring messing it up.