Hi MARCUSMEADE,
The idle adjust screw is located on top left of the throttle body, a bronze screw.
The idling speed is correct now and increasing it can cause surging, especially when the the engine is starting to warm up after a cold start.
The vibrations that you are experiencing are due to bad engine mounts and getting them replaced would be the correct way to eliminate the vibrating issues.
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Wednesday, March 31st, 2010 AT 9:24 AM