Inspect motor mounts: The motor mounts are responsible for absorbing vibrations from the engine and preventing them from being transmitted to the rest of the vehicle. If the motor mounts are worn out or damaged, they can cause the engine to vibrate excessively at idle.
Check driveshaft: A worn or damaged driveshaft can cause the vehicle to vibrate excessively at idle. Inspect the driveshaft for any signs of damage, such as dents, bends, or cracks.
Check transmission mounts Ensure the transmission mounts are properly tightened and not damaged. Loose or damaged transmission mounts can lead to excessive vibration at idle.
Check spark plug wires: Faulty spark plug wires can cause the engine to run rough and vibrate excessively at idle. Check the spark plug wires for any signs of damage, such as cracks or breaks.
Check oxygen sensor: A faulty oxygen sensor can cause the engine to run rich or lean, which can lead to excessive vibration at idle. Check the oxygen sensor for any signs of damage, such as corrosion or cracks.
Check timing belt: If your vehicle has a timing belt, check to make sure that it is properly tensioned. A loose or worn timing belt can cause the engine to vibrate excessively at idle.
Check distributor cap and rotor (if applicable): If your vehicle has a distributor, inspect the distributor cap and rotor for any signs of wear or damage. Worn or damaged distributor cap and rotor can cause the engine to vibrate excessively at idle.
Throttle body cleaning carbon build-up in the throttle body can disrupt airflow, causing a rough idle. Clean the throttle body to ensure smooth air passing.
