Engine Misfire or Mount Issue Causing Whole Car Shake at Idle
A 2020 Toyota Camry shaking at idle typically indicates an engine misfire, worn engine mounts, or a fuel/air delivery problem. The vibration is felt throughout the car, suggesting the issue is engine-related rather than driveline.
Diagnosis Details
Possible Causes
Engine misfire due to faulty spark plugs, ignition coils, or fuel injectors
Worn or broken engine mounts allowing excessive vibration transfer
Vacuum leak or dirty throttle body causing rough idle
Fuel system issue (clogged fuel filter, bad fuel pump) or low fuel pressure
Related OBD-II Codes
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What You Should Do
Check for diagnostic trouble codes (DTCs) using an OBD-II scanner.
Inspect spark plugs and ignition coils for wear.
Examine engine mounts for cracks or sagging.
Clean throttle body and check for vacuum leaks.
If no codes, perform a fuel pressure test.
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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.
