Have you inspected the heater hoses and verified that both hoses are attached towards the firewall of the vehicle?
If they are not and looks like they bypassed them then they did it that way because the heater core is leaking. If they are installed correctly, verify that both hoses are hot once the engine is at operating temperature. If they are not, meaning one is cold and one is hot, then the heater core is plugged up, if both are hot, then I would suspect a problem with the temperature damper motor or the climate unit itself is faulty. For this proper diagnosis needs to be done and first thing they would need to do is try and calibrate the damper motors and follow fault tracing from there.
Thursday, November 4th, 2010 AT 12:35 AM