Got the air down to 40 when first started it stays around 45 when driving it creeps up to 55 or higher at idle. Fans are good pressure is correct looking for correct closure of the doors.
Have not found a A/C vacuum diagram and location of valves to troubleshoot for my 87 924s.
I need to trouble shoot the air recirculation solenoid. I see the heater solenoid is controlled by a cable and it is stuck,I am assuming valve is bad. I will clamp the heater hose to test. The vacuum is holding on the control unit head tested off of the one way valve, valve is holding and working correctly.

 

Not a lot of feed back from this group but from what I have researched is that 40 Degrees is the target temp for this system. The temp swing is annoying and wondering in my Florida environment if others are experiencing the same!
I am wondering if replacing the condenser with a parallel may help, has anyone found a solution to this?

 

Did you check Clark's garage? I thought I remember seeing one, but I can't recall where.

 

Yes, but trying to get some real world feedback on 924s owners in a hot climate. One friend has an 944 and it stays around 50 in traffic in Fl trying not to waste money on a problem that does not exist. Compressor has only 43K miles on it new receiver/dryer vacuumed and fill at 74%. 90 Degrees 38/175 all looks good fans are full speed with air on.

 

I wish I could help but: