How to Replace a Catalytic Converter in a Honda

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The catalytic converter on a Honda is an emissions component located in the exhaust system. A catalyst inside the catalytic converter combines unburned hydrocarbons and carbon monoxide with oxygen to create carbon dioxide. If the catalytic converter melts it can cause extreme back pressure in the exhaust system, leading to poor performance. Rust in the catalytic converter can also lead to exhaust leaks.

Things You'll Need

  • Jack stands
  • Metric wrench set
  • Metric socket set
  • Penetrating oil (WD-40)
  • Anti-seize compound

Removing the Catalytic Converter

  • Raise the vehicle according to instructions listed in the owner's manual and support with jack stands.

  • Spray the retaining bolts with a penetrating oil such as WD-40. There are five bolts that connect the catalytic converter to the exhaust pipes: two in the front and three in the back.

  • Remove the bolts that connect the front of the catalytic converter to the head pipe.

  • Remove the bolts that connect the rear of the catalytic converter to the exhaust pipe.

  • Remove the catalytic converter from the vehicle.

Installing a Catalytic Converter

Tips & Warnings

  • Spray the bolts once with penetrating oil the night before you intend to remove the catalytic converter and then once again one hour before you begin.
  • The catalytic converter becomes extremely hot while the engine is operating. Do not attempt to service the catalytic converter immediately after turning off the engine. Always follow the instructions listed in the owner's manual when lifting and lowering a vehicle. Failure to do so could result in injury or death.

References

  • "Chilton Honda Civic/CRX/del SOL 1984-95 Repair Manual": Chilton Book Company; 1995
  • "Haynes Honda Accord 1984 thru 1985 Owners Workshop Manual"; Colin Brown; 1988
  • "Chilton Import Car Manual 1992-1996"; Chilton Book Company;1995
  • Photo Credit modenadude - creativecommons.org
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