I have 2016 VW Jetta S. My Ac blows warm air and only blows cold when the car temp says 80 or below. If it’s above that number it won’t get cold. I’ve changed the compressor, condenser, and evaporator. I think whatever is suppose to detect the temp and pressure change might be the issue. Please. My kids and I have been suffering and low on cash as I’m a student. Thank you all for your time and help.