More A/C problems

tango_1000 · Post by **tango_1000** » 17 Apr 2026, 16:46

Once again for my C70 2011 so the last compressor, new, was defective, it did not suck freon when I tried to fill it, So I replace it again with an Aisin. Then yesterday installed and everything was OK, did a vacuum, it hold at -30 for a while, vacuum more and add the freon. So after a while started cooling. Today I went out to try, I started the car and the cold air started to blow very nice, I put a grill thermometer and it was at 50 degrees, very nice, I drove few minutes, stopped the car and when I set back to drive again...again no cold!!!!
There is no leaks , the freon show the same amount as yesterday, I actually add more. When I installed I flushed the hoses again and it have a new orifice tube. Please any help. Thank you. It comes with oil in it but do I need to add a bit more?

Vova585 · Post by **Vova585** » 17 Apr 2026, 20:12

I woud suggest to get a vida/dice and read hvac codes. It might show you the possible issue. You will also need to see inputs from pressure sensors that car is seeing. Chances are your car is seeing too high of the pressure and turns off the compressor.
If you have no vida dice, better get it to a dealer and hopefully they will be able to sort your issue under 1 hour of diag time.

tango_1000 · Post by **tango_1000** » 18 Apr 2026, 13:02

AH, too high!! I thought it could be to low. I will probably try my mechanic at Volvo on Monday. Thank you for responding