The human body runs on various systems. We have our circulatory system, skeletal system, respiratory system, and so on. We need each system to work properly to remain healthy. Our vehicles are the same. They contain a series of systems that work together to keep it functioning properly. Each system needs to be properly maintained and taken care of.

This is the fourth in a series of blogs we will be posting about the various vehicle systems and their function. Please also see:


Vehicle exhaust systems have come a long way over the last few decades.  The exhaust system is now safety and emissions control rolled into one. The purpose of the exhaust system is to route dangerous exhaust gas away from the vehicle and prevent it from negatively impacting passengers. The fumes that the exhaust system is meant to protect you against can be deadly, so you should inspect your exhaust system regularly and have it repaired immediately if a problem arises.

Parts of the Exhaust System:

  • One or more mufflers
  • One or more oxygen (O2) sensors
  • One or more catalytic converters
  • Exhaust pipe
  • Tailpipe

The exhaust system in its entirety reduces exhaust noise that comes from the engine. The catalytic converter is responsible for reducing the amount of harmful pollutants in the exhaust. Oxygen sensors are mounted in the system to monitor the level of oxygen in the exhaust gasses to maintain effective engine operation and to monitor the operation of the converter.


Regular exhaust system checks will help keep your car safe. As with all parts of a car, the parts of the exhaust system will not last forever and will eventually need maintenance or replacement. There are several factors that contribute to the wear of the parts of the exhaust system. Driving habits – like multiple short trips – can have a negative effect on the life of the system. Road conditions like salts/sands, bumps and road spray can all damage or erode the pipes and other components of the undercarriage. Road salts are especially hard on the system and can cause serious rusting. At the end of winter, be sure to fully clean the undercarriage of your vehicle. The type of vehicle you drive and the age of the parts of the system also impact the functionality of the exhaust system.

Signs that maintenance is required on the exhaust system include:

  • Increase in engine noise
  • Rattling noises when starting, accelerating, or braking
  • Drowsiness while driving
  • Smell of rotten eggs


If you experience any of the above, have the exhaust system checked for leaks, damage, and broken supports or hangers. Do not delay in having the exhaust system repaired. Exhaust leaks can be dangerous and must be corrected right away. Meridian Automotive is happy to help with your exhaust system troubles in the following ways:

  • Exhaust diagnostics
  • Exhaust repair
  • Exhaust manifold replacement/repair
  • Muffler replacement
  • Catalytic converter replacement

For over 20 years we’ve been Meridian’s exhaust repair experts. Don’t trust just anyone with your exhaust system, trust the experts at Meridian Automotive.  Call us today (208) 297-5573, or schedule an appointment online.

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