How to repair while troubleshooting an auto AC Compressor - Learn to properly install a car AC compressor for your Auto AC System. AC hoses, AC lines, ac condenser must be flushed properly and new car AC compressor is preferred for a good installation. Only use remanufactured AC compressor if a new one is not available. There are many reputable rebuilders but if you can afford a new ac compressor, don't bother with the reman. Part 1 covers how to diagnose a car AC system. It leads into how to install an AC compressor in a car. Primarily, Part 1 will focus on how to uninstall ac compressor and ac system components. It goes over the proper tools necessary when troubleshooting an ac compressor, what to look for once an ac compressor is removed, and what to do before installing a replacement AC Compressor.