Recently my car started to idle with a vibration. the idle itself seems smooth, there is no missing or coughing, no loping. It is idling a bit lower than usual, but even if i raise the engine speed with my right foot, the vibration remains until about 900rpm. Its not really bad, enough to be felt through the steering wheel and to make the mirrors shake a bit. Sometimes it doesn't happen at all though! I've checked my plugs and leads, and fuel filter. A mate said maybe an engine mount is worn out - would there be any other symptoms if this was the case?
