A new radiator fan has been causing electrical feedback that causes the dash board to pulse with the beat of the engine. This has been going on for about two weeks, while a new fan is on back order.

More recently, the engine would not rev up beyond 3000 rpms. The engine had enough power to get up to highway speed, but wouldn't rev up, it was a steady climb. Is this just the O/D wearing out?

Are these issues related? How much more damage am I doing to my car by driving with these conditions?