The evaporator temperature has a good reading now. I didn't (149) and replaced the sensor and its ok now.

As far as the pressure goes, I can only assume when the AC shop filled it that it was good. I put about 1.5 bar of compressed air into it to get it off its "lo" reading but it didn't engage and I was concerned about putting more in. Would you suggest putting 3 bars of compressed air in and seeing what happens?