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How long can you drive with a bad catalytic converter?

Whenever I drive I smell rotten eggs and there is dark exhaust smoke coming from the tail pipe. I don’t have enough money to fix my catalytic converter right now. How long can you drive with a bad catalytic converter?

avatar
Talullah Blanco · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
You can drive with a bad catalytic converter indefinitely if it is still plugged in. However, driving with a bad catalytic converter can cause the following:
  • Reduced engine performance
  • Sluggish acceleration
  • Failed DEQ emissions test
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