Engine Misfire or Mount Failure at Idle
The whole car shakes at idle, which is often caused by an engine misfire (e.g., spark plugs, ignition coils, fuel injectors) or worn engine mounts that fail to dampen vibrations. This can also be due to a vacuum leak or idle air control issue.
Diagnosis Details
Possible Causes
Engine misfire due to faulty spark plugs, ignition coils, or fuel injectors
Worn or broken engine mounts
Vacuum leak or idle air control valve problem
Related OBD-II Codes
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What You Should Do
Check engine mounts for cracks or excessive movement.
Inspect spark plugs and ignition coils for wear or damage.
Scan for diagnostic trouble codes (DTCs) to identify misfiring cylinders.
Clean or replace the idle air control valve if needed.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
