I have a 2001 V70 base, euro model with 218,000 mi. A/C blows cold for a few moments then goes to luke warm. Compressor is working, checked and filled gas, replaced compartment filter. Is the heat not being blocked as it blows warm even with the air off and the control turned to blue.Thank youDougBristol VA
It is possible that airflow thru the heater core is occurring. A way to find out if this is the case is to block the coolant flow thru the heater. I have done this by temporarily pinch shut one of the heater hoses near the firewall, then driving the car normally. Needle nose vice grip pliers can be used to do this. They will leave a mark, but won't damage it. If it still warms up, there could be an expansion valve problem in the A/C, or a compressor problem. If however, it stays cool there is a damper problem. Usually this is going to be on the left or right, but not both sides equally. The temp control knob potentiometers are known problems on this panel, rotating the knobs quickly and fully in both directions can temporarily clean them.
Clamped the heater hose today and it seemed to work. The air continued to blow cool. I rotated the temp control knobs but experienced not change. I will next take it to my Volvo mechanic with your suggestion on the damper.
Ok, Glad to be able to help shed some light on this! You may need a damper calibration with the Volvo VIDA computer, some contact cleaner, damper motor, or possibly a new control panel. Good luck!41095.1466226852