I have a 1990 model, and for some reason my heater doesn't work, but my ac will work. My climate control lcd, also doesn't work at the moment. This car is kinda new to me, so I was just wondering if anyone can tell me where to start checking first.

 

I think that's a sign the coolant needs to be bled. And the lcd screen you can remove and replace yourself with a new one if you trust your soldering skills.

 

just read the stickies at the begining of the blog and find out how to do it.....