There is just no way the AC would blow 110 degrees with an ambient temp of 73. You may have a blend door issue not just an AC issue. Second, where did you measure 110 degrees? Out of which vent? That sounds like the heat is on not AC.

I know you said that you could only get 20 oz in the system but are you sure you recovered it all? When you say you pulled it into a vacuum, did you actually recover the Freon or just pull it into a vacuum? At 70 degrees you should be no higher than 40-45 on the low side and 170 on the high side. First, your pressure is high for that ambient temp. He put the scan tool on it and tested the fuse and relays. That s when a mechanic friend came over and started the whole talk about that my fan should kick on when I press the AC button to start pulling air across my condenser and that s why the other 20oz won t go into my system. Okay so after vacuuming and emptying the system I starting filling it with Freon again and could only get it to take 20oz again. I then put a vacuum pump on it and then using regulators I bled off what I think was the low pressure line because I couldn t fit the regulator fitting on the high side because it was under the air filter and to be honest I did not want to take it off. (I was really just wanting to make sure it didn t have a leak from my install) I could only get about 20oz in and it just quit taking it. After I got the rear evaporator and expansion valve installed I tried to put 41oz of Freon in myself. The two lines coming off the rear evaporator was broke for about 2 weeks. So I changed the rear evaporator and rear expansion valve.

The front was blowing out cold air while the back was blowing out luke warm air. Here is what happened to give all this context. So yes the problem I m having is with the AC not getting cold enough. I appreciate you giving such a detailed response. If I am reading into what you are after, is your issue that the AC does not get that cold? So the question is, are the sensors listed reading properly so that the control module knows when to tell it to go to high.Īlso, when you say you can't get enough Freon in the system, have you evacuated it and pulled it into a vacuum and then recharged it? The fact that you can command the fan on 99% shows that the fan, wiring, and control module are capable of doing it. If none of these conditions are present then it will be set at a lower speed. In order for the fan to be on high (99%) the coolant temp needs to be around 230 degrees, AC pressure is 300 PSI, or transmission temperature is 232 degrees. That means it will not just kick up the speed to HI when the compressor comes on. That means the control module will ramp up the speed of the fan from 30%-99% depending on what the input sensors are telling it. This fan is control via what is called duty cycle.

If you are looking for fan to kick into a second speed, you are not going to see that. From what you said, it looks like you have covered most all the bases. It sounds like this fan is operating properly.

Coowon speed not working