Pontiac 25056230 Catalytic Convertor

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Situated below the vehicle in the exhaust system, a catalytic converter is a muffler-like unit. It aims to minimize the release of hydrocarbon (HC) and carbon monoxide (CO) pollutants into the atmosphere. A 49 States and High Altitude model X-Bodies utilize this kind of converter which has small beads that are coated with platinum and palladium. These beads facilitate chemical reactions that convert CO to CO2 and HC to CO2 and H20. The Phase II Monolith converter is used in California version X-Bodies, which have an internal design like honeycomb coated with platinum as well as rhodium in addition to platinum. This catalyst also helps reduce oxides of nitrogen in addition to HC and CO. Keeping it working effectively requires using only unleaded fuel. Periodic maintenance isn't necessary but the life span of this converter is limited hence must be replaced after every 30,000 miles approximately. When the useful life of the catalyst has been depleted, a 'catalyst' reminder light appears on the speedometer. If for any reason a bead-type converter becomes useless, replace it with a new one or drain off and replace beads inside it. The Monolith converter cannot have its catalyst replaced separately. If a bead-type converter's bottom gets damaged, it can be replaced without removing the entire thing. Note that the converter operates at very high temperatures so care must be taken when working near or on it so as not to get burnt.

Situated below the vehicle in the exhaust system, a catalytic converter is a muffler-like unit. It aims to minimize the release of hydrocarbon (HC) and carbon monoxide (CO) pollutants into the atmosphere. A 49 States and High Altitude model X-Bodies utilize this kind of converter which has small beads that are coated with platinum and palladium. These beads facilitate chemical reactions that convert CO to CO2 and HC to CO2 and H20. The Phase II Monolith converter is used in California version X-Bodies, which have an internal design like honeycomb coated with platinum as well as rhodium in addition to platinum. This catalyst also helps reduce oxides of nitrogen in addition to HC and CO. Keeping it working effectively requires using only unleaded fuel. Periodic maintenance isn't necessary but the life span of this converter is limited hence must be replaced after every 30,000 miles approximately. When the useful life of the catalyst has been depleted, a 'catalyst' reminder light appears on the speedometer. If for any reason a bead-type converter becomes useless, replace it with a new one or drain off and replace beads inside it. The Monolith converter cannot have its catalyst replaced separately. If a bead-type converter's bottom gets damaged, it can be replaced without removing the entire thing. Note that the converter operates at very high temperatures so care must be taken when working near or on it so as not to get burnt.

The catalytic converter is an exhaust system component used to control emission of hydrocarbon and carbon monoxide pollutants; the beads used in the current invention are coated with platinum and palladium. It is advisable to use unleaded gasoline only for vehicles fitted with this converter in order to reduce combustion chamber deposit and avoid lead poisoning of the catalyst. In general, there is no demand for frequent maintenance, but it is suggested to check the converter and other linkages of exhaust during other servicing work. Should an official inspection prove the converter to be ineffectual, then it may be replaced or the coated beads may be drained and replaced; and physical damage, or inadvertently using leaded fuel as possible causes of malfunction. Due to the working temperature the converter can generate, any work should only be done after allowing it to cool down while when lifting the vehicle care should be taken not to damage this part. It is unusual to remove it but if it is necessary the car has to be raised securely enough and the catalytic converter has to be cooled, it is then disconnected at the front and the rear section while if the fasteners are frozen they can be cut off. Removal is done in the exact process using new nuts and bolts after loosening them appropriately. There are two types of converters: monolith converters which if break have to be replaced while bead type converters that have a bead replacement plug. Bead replacement is commonly done with the converter disconnected, whereby the fill plug is unscrewed, the previous beads are drained and replaced with new beads and the system tapped to allow the beads to settle down. A reinstallation fill plug is used in a special operation as there are steps that require to be taken to ensure the seal of the speaker. After installation of the exhaust, engine should be started for the purpose of checking leakage.

Retain all parts and reinstall them.

Certain conditions to avoid include: - The use of fuel system cleaning agents and additives - Operating with an inoperative choke or submerged carburetor float - Extended engine run-on - Turning off the ignition while in motion - Ignition or charging system failures - Misfiring spark plugs - Disconnecting a spark plug wire during testing - Pushing or jump starting the car when hot - Pumping the gas pedal when starting a hot engine.

Yes, if a bead-type converter becomes ineffective, it can be replaced with a new one, or the beads can be drained and replaced.