Okay, so i dont have heat in my evo 8. The car never over heats, it runs great. It blows nice ice cold A/C, but when i turn that knob to full heat, its just not blowing hot air. Im thinking its the thermostat, but im no mechanic and id rather get someone else's take on it. Thank you!

Oh P.S., the owner before me relocated the A/C control panel to the bottom to install a touch screen radio, could that have a effect?

 

This ended up being my problem. The gear itself under the dash wasn't turning all the way.

 

okay cool, im assuming this is it since it has been relocated, thank you!

 

Move the temperature control knob while looking to see if the levers on the heater box located above the accelerator pedal are moving. If not, that's your problem. It could be the control, cable or a stuck door inside the box.

If the levers are moving then suspect the thermostat.

 

I had the same problem too. Just search some in youtube