Thanks for the help! The volvo dealership wont tell me the codes. They only told me that it would run about $300 for them to do a "diagnostic run" on the car. I am not prepared to spend $300 for them to just tell me what's wrong. The car runs great! Summer is right around the corner and we get a lot ...

I have a 97 850GLT. I have swapped out the ECC twice, changed the Heater core, and recharged the system. I still can't get the ECC to throw the air in any other direction than the fron t vents. I also can't get the passenger side to change the temp either. It will only blow cold - super cold - 40 ...