I need your advice on how to solve my problem re: engine vibration when engage to drive mode and when a/c is on at idle. I have replaced all (4) motor mounts,had the throttle body cleaned and poured fuel injector cleaner, regular oil change. Yet, still having this vibration problem. So far, i have no problem when it comes to engine accelaration and power.
This all started when my car hit 106,000 miles; I have noticed that the engine sound becomes louder and the idle is rough with the vibrations. When engine is engage and a/c is ON the rpm is very stable at its required level. This car use to be very quiet and stable.