Rotten Egg Smell When Accelerating
A rotten egg smell (sulfur odor) during acceleration in a 2020 Ford Explorer typically indicates a failing catalytic converter or an overly rich fuel mixture causing the converter to overheat and emit hydrogen sulfide. This can lead to reduced performance and potential engine damage if not addressed.
Diagnosis Details
Possible Causes
Failing catalytic converter – internal contamination or overheating causing sulfur release
Rich fuel mixture – faulty oxygen sensor, fuel injector leak, or mass airflow sensor issue
Engine misfire – unburned fuel entering the catalytic converter
Related OBD-II Codes
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What You Should Do
Have the vehicle inspected immediately.
A technician should check catalytic converter temperature, oxygen sensor readings, fuel trim, and scan for diagnostic trouble codes.
Avoid prolonged driving to prevent converter damage or fire risk.
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.
