Weird tachometer action
Started my car for the first time in a month yesterday and immediately heard a strange rattling noise coming from the dash. Looked down and the needle on my tachometer was stuck on ZERO and wildly fluctuating up and down about 1/16". Then suddenly it became unstuck and resumed the normal cold fast idle reading. Has not happened since, so probably just some electronic gremlin that came and went.
Just thought I would throw it out here and see if anyone else has had this happen.