Hey gents, my AC died in my truck. It's not getting cold at all. I tried to charge the system with RC134 but when I hooked it up the Low Pressure side has over 100psi! I don't know a lot about AC systems but that doesn't seem like a good thing... I tried to locate a low pressure switch but couldn't seem to find it. Also, anyone know where the cabin air temp sensor is located? I'm grasping at straws here in the FL July heat. All help is appreciated.

Thanks,
Scott

 

I would have a professional check it out and do a evac and recharge if that's what it needs. Often the AC system can leak (especially through the rear AC lines) and charging it up will only buy you a limited time with working AC. It also needs the correct amount of oil in the system. It is by no means a basic or standard AC system.

Did it die suddenly or gradually?