Why does my radio and ac fan keep turning off and on when i drive it

Hello, it will take some research by a skilled technician to investigate the root cause of what is happening. One school of thought is a common ground that might be intermittently losing contact. Or a common power source. Or a common module that could be malfunctioning. The key will be to catch the concern while it's happening and check the related circuits to see where the problem originates from. An experienced technician with a shop manual and wiring diagram will be able to dig in and find the source of the problem.