The best protection against carbon monoxide entry into the vehicle body is a properly maintained engine exhaust system.
If you notice a change in the sound of the exhaust system; or if the exhaust fumes can be detected inside the vehicle; or when the underside or rear of the vehicle is damaged; have an authorized technician inspect the complete exhaust system and adjacent body areas for broken, damaged, deteriorated, or mispositioned parts. Open seams or loose connections could permit exhaust fumes to seep into the passenger compartment. In addition, have the exhaust system inspected each time the vehicle is raised for lubrication or oil change. Replace as required.
WARNING!
CAUTION!
In the event of engine malfunction, particularly involving engine misfire or other apparent loss of performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe malfunction could cause the converter to overheat, resulting in possible damage to the converter and vehicle.
Under normal operating conditions, the catalytic converter will not require maintenance. However, it is important to keep the engine properly tuned to assure proper catalyst operation and prevent possible catalyst damage.
NOTE: Intentional tampering with emissions control systems can result in civil penalties being assessed against you.
In unusual situations involving grossly malfunctioning engine operation, a scorching odor may suggest severe and abnormal catalyst overheating. If this occurs, stop the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer's specifications, should be obtained immediately.
To minimize the possibility of catalytic converter damage: