Mitsubishi Repair: heater, heater core, wiring harness

Question
my heater is blowing hot air on the passenger side but blows cold air on drivers side. i just installed a new radiator and new thermostat, still the same.  

Answer
Rigo: This is really a hard question to answer, as I have no idea what model you have. So here is some ideas on my part... the air problems could be from the distribution duct assembly is stuck blowing the air on the driver's side only. If the car is an older model could be it have a lot of dirt and what not causing this. You need to check the hoses that go through the firewall into the heater inside the car, is one cool to touch and one hot to touch. You will need to run the car for a bit, if that is not true then your problems is with the engine but if the hoses are cool and hot then it is your heater unit. Have you checked your fuses? Could be a short in your wiring harness and then it could be the heater core is bad. There are also ducts that could be broken or not working right also. You need to get a manual for your car, you can get one at any parts store. They cost about $20.00 and are well worth the money spent. Then you can look up the heater set up for your car. Other wise take it to a shop to get it fixed. Hope this helps and good luck!