Recently, I notices some odd sound and vibration of tachometer on my Toyota Camry 1997 (78000 miles) and it's happening randomly. Does anyone know what it could cause these?
1) I notice the vibration of tachomenter's arm when the engine is idle sometime. I think maybe it is some thing to do with the belts (i.E. Timing belt) or the sparking plug wire but not really sure about it.
2) There is some strange sound like a signal noise below power steeling or around the fuses area.