Engine Misfire or Idle Imbalance Causing Whole Car Shake at Idle
A 2020 Ford Explorer experiencing whole-car vibration only at idle suggests an engine-related issue that smooths out under load. Common causes include a misfire, vacuum leak, or worn engine mounts.
Diagnosis Details
Possible Causes
Engine misfire due to faulty spark plugs, ignition coils, or fuel injectors
Vacuum leak causing erratic idle (e.g., cracked hose, intake gasket leak)
Worn or broken engine mounts allowing excessive vibration transfer
Carbon buildup on throttle body or idle air control valve
Related OBD-II Codes
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What You Should Do
Check for diagnostic trouble codes (DTCs) with an OBD-II scanner.
Inspect spark plugs, ignition coils, and fuel injectors for misfire.
Test for vacuum leaks using a smoke machine or propane.
Examine engine mounts for cracks or excessive movement.
Clean throttle body and idle air control if needed.
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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.
