text.skipToContent text.skipToNavigation
'Catalytic Converter Banner'

Catalytic Converter

The catalytic converter is a vital part of your vehicle emissions control system. Its job is to reduce toxic air by converting harmful pollutants into less harmful emissions, such as water, carbon dioxide and nitrogen.

     

CATALYTIC CONVERTERS

Your vehicle’s catalytic converter is a component of the emissions system. Two-way catalytic converters are often used with diesel engines while three-way catalytic converters are frequently used in passenger vehicles.

INSTALL LEVEL OF DIFFICULTY

Medium

What is a Catalytic Converter?

The catalytic converter is a vital part of your vehicle emissions control system. Its job is to reduce toxic air by converting harmful pollutants into less harmful emissions, such as water, carbon dioxide and nitrogen.

How do Catalytic Converters Work?

In the catalytic converter, there are two different types of catalysts: a reduction catalyst and an oxidation catalyst. The catalytic converter works with your vehicle’s powertrain control module (PCM) and other emissions control devices. It has no moving parts, and is designed to last the life of your car.

How are Catalytic Converters Made?

Catalytic converters typically are constructed with a stainless-steel body with monolithic free-flowing substrate, body and pipe heat shields, catalyst cushioning mat, and oxygen sensors.

Why do Catalytic Converters Fail?

  • Overheated, melted or broken converters
  • Coated or oil-fouled substrate
  • Structural damage from corrosion, thermal shock, metal fatigue, stripped oxygen sensor threads, or flex pipe failure

What are Symptoms of Catalytic Converters Failure?

  • No acceleration when gas pedal pushed
  • Drop in gas mileage
  • Engine quits after a few minutes

What are Implications of Catalytic Converters Failure?

  • Engine stalling
  • Engine failure
  • Inability to drive

If you have questions or concerns about catalytic converters, your vehicle’s emissions system, or any of your vehicle’s systems or system components, come into your local Pep Boys where we can answer any question, help you find any car part or perform any vehicle service you might need. From information to installation - our ASE certified technicians are here to help you… and your vehicle!

If you want to learn more about other car parts, especially as they apply to your catalytic converter, we recommend reading up on mass air flow sensors, oxygen sensors and PCV valves

'easy fade Banner'

'med solid Banner'

'difficult fade Banner'