Electrical Questions? Ask an Electrician Online.
Hi, I'm Mike G and I'll be assisting you. I suspect that the clicking noise is more than likely the blade alignment may be off and hitting the housing. That happen when the fan is cleaned and pressure on the blade makes it move. As for the switch. Pull chain switch will fail with use. The only remarrying is to replace it. An exact replacement won't be available at any home center. You'll need to go on line to the link below for the right one. When changing the switch take special notice to mark down the wire colors on the switch terminations to avoid problems.
If the light kit is stem attached, itnerds to be turned clockwise firmly to establish a tight firm attachment. They are either stem attached or attached with screws. Screws are better.