Title: Diagnose emission and drivability concerns caused by the catalytic converter system; determine the needed action.
Course: Automotive Technology III (20104-III) > Section: ENGINE PERFORMANCE: Emissions Control Systems Diagnosis and Repair

Procedure should include

- using the scan tool and performing a temperature test to test efficiency
- using manifold vacuum readings
- referring to service materials and manufacturer guidelines.

Process/Skill Questions:

- What is the chemical makeup of the catalyst?
- What does the catalytic converter do?
- How is waveform different on the pre- and post-catalytic converter O2 sensors?