My car (110,000 miles) has developed a rough vibration when idling, at lights or stop signs. The tachyometer also will peridically pulse between 600~1000 rpm when at idle, but everything clears up and runs fine.
If it was an earlier model, I'd blame the RPM on a problem with the idle air control solenoid, but appreantly this is no longer an easily changed, discrete unit, and is now part of the throttle module. The vibration, maybe too, although the fact that the vibration is constant at idle, and the RPM variation is not, makes me think that the former might be a problem with the engine mount.
Is this enough for anyone else to lend analysis or feedback before I take it into the garage?