The dealer service department must choose whether to repair or replace the catalytic converter on these newer Acura and Honda models because their emissions-related part warranty covers them. A catalytic converter is an emission control device in the exhaust system that reduces pollutants, with two types: The oxidation converter uses a coated platinum and palladium honeycomb material to turn gases into cleaner outcomes, while the reduction converter uses the same substrate with platinum and rhodium to reduce various nitrogen-based emissions. A three-way catalyst uses both oxidation and reduction functions to get rid of all three pollutants, and every model in the lineup includes this feature. Under the car and bolted to each cylinder head are three pollution-control units known as catalytic converters. When you think something isn't working right, you should bring your car to a certified dealer or place that checks emissions for investigation. While servicing underbody parts, always look for damage, leakage, and corrosion on the converter assembly. Replace the entire assembly immediately when you see any problems. To test for an exhaust clog, turn on the engine, connect a vacuum gauge to the intake system, measure vacuum at idling, then snap the throttle wide open and shut quickly. Record readings. If the exhaust system is seriously clogged, we will know by measuring one vacuum reading that is less than one inch of mercury below our initial idle vacuum value. When replacing the part, you'll take off needed pieces like the cooling fan/cover, air conditioner fan/cover, work on the fuel, disconnect the
Oxygen Sensors and boilers, and dump the old pictures between the engine and vehicle. Before starting work, always replace all gaskets and make sure each flange nut closes firmly.