See also:

Three-way catalytic converter
• Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition systems, may cause unusually high threeway catalytic convert ...

Air vents in the door pillars
A - Closed B - Open C - Horizontal airflow D - Vertical airflow Direct the outer air vents toward the side windows to defrost. Direct the vents into the passenger compartment to help maintain t ...

Recirculation/air quality system
Recirculation This function can be used to shut out exhaust fumes, smoke, etc., from the passenger compartment. The air in the passenger compartment is then recirculated, i.e., no air f ...