Engine Misfire or Idle Air Control Issue Causing Whole Car Shake at Idle
The 2020 Toyota Tacoma shakes at idle, indicating a potential engine misfire, dirty throttle body, or failing idle air control valve. This can be caused by spark plugs, fuel injectors, or vacuum leaks.
Diagnosis Details
Possible Causes
Faulty spark plugs or ignition coils causing a misfire at idle
Dirty throttle body or idle air control valve restricting airflow
Vacuum leak (e.g., intake manifold gasket, PCV hose) disrupting air-fuel mixture
Related OBD-II Codes
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What You Should Do
Check engine codes with an OBD-II scanner.
Inspect spark plugs and ignition coils for wear.
Clean throttle body and idle air control valve.
Test for vacuum leaks using a smoke machine or propane.
Replace any faulty components.
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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.
