My type s 07 is not blowing cold air at the moment, I checked pressure at low side, 45(full), ac fan turns on, and heat works just fine. No fault codes, no information from the ECU. The air is room temp at coldest, I dont know what could be causing it at this point, any ideas? Have any of you had this problem before???

 

check a/c compressor clutch relay, you can swap it with the rear window defroster relay (they are the same) and see if that helps. If not, it could be a few other things!

 

Checking pressure on just the low side is useless in diagnosing, go rent a manifold to check both sides simultaneously with the compressor on and off snd report back

 

^ low side can help, if there is a big leak and the pressure is low it will not turn on the compressor! But if you add R134A and start hearing the compressor cycle on/off, then you know the issues is low R134A level. then a few days later it's not working, you have a leak!

 

Since it was Feb 21 when you posted, what was the outside AIR Temp (ambient temp) when you measured the pressure?
If you have 45 psi and the temp was below 80, then you may have too much pressure

 

Sometimes a/c pressure switch gets stuck. Happened to me before.

 

^^^^^This right here... spent a whole week looking for leaks, fillinf and whatever else... just for it to be relay... did exaclty what was posted and the ac started working. Make sure to buy the right relay.