I have a 2002 Volvo V40. It recently developed a problem where all I get is hot air no matter where the climate control is set. The fan control works fine, but even when I have it off I feel the hot air while driving on the freeway. The air is cold for a few minutes until the car warms up. The air stays hot even when the AC is turned on. If I turn the AC on right away, before the car warms up, it works. I have also noticed that if I am idling at a stop light the hot air decreases, then increases again when I accelerate. I have already replaced the climate control unit with a used one, which took care of the erratic blower fan speed. I also had a new resistor pack installed last summer. I also checked the damper control motor and arm and confirmed that is works when I adjust the temp control. Any ideas on what could be causing this? Thank you
Volvo V40 blowing hot air only regardless of where temp control is set on 2002 Volvo V40
by mihalistr in Seattle, WA on February 27, 2011
ANSWER by Boston1 , February 27, 2011
It has to be a blend door broken and stuck to hot air, the actuator could be moving and not working the door!