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Closed for Lunch: 12:30PM-1:30PM
Here are some tips to help you evaluate your car’s catalytic converter health.
There’s so much talk about catalytic converter theft, most people are aware it’s an expensive part that has marketable elements that thieves are monopolizing on. What really is a catalytic converter? It’s the last active component of a car’s engine. The canister design houses a ceramic core with holds a series of baffles or honeycombs. Those create a large surface area for the exhaust particles; carbon monoxide, hydrocarbons and nitrogen oxide to be catalyzed. The honeycombs contains 3-8 grams Palladium, Platinum and Rhodium which modify the exhaust by pulling atoms off the gas molecules rendering them less harmful.
Besides being stolen, is there a need to replace your catalytic converter? Yes, they do fail and usually it’s a slow death. So, what can you watch out for? First, don’t ignore the check engine light. Get it checked, find out what’s causing it. It may be a minor thing or it could be an important engine or fuel component. If you experience loss of power, the engine can be misfiring. Misfires whether caused by an ignition, air/fuel or mechanical fault can all result in an increase of unburned fuel and or/oxygen in the exhaust and pose a threat to the catalytic converter. Have a professional auto repair check out the misfire, if its fuel related they will test the functionality of the MAP sensor, MAF sensor, O2s sensors, coolant temperature sensor, TPMS sensor and fuel pressure sensors. These components work in tandem to provide proper fuel/air mixture settings for the engine. If the fuel system is incorrectly regulated, your engine can be emitting unburned fuel into the catalyst and sending too many pollutants into the atmosphere. This condition can cause the ceramic core of the converter to overwork, overheat and break down, greatly reducing the amount of pollutants it can process. Have a look at your service history. Keep up with spark plug replacement, usually only needed every 50,000 miles or approximately every 5 years. It’s important because worn spark plugs can cause the engine to misfire as well.
Listen to your engine. Does it sound different? Is it louder or have a distinctive rattling noise when started? A leak in the exhaust system can result in an increase of oxygen in the converter and an incorrect O2 sensor reading. Watch for road debris, as this could bounce up and damage the exhaust system, creating a blockage and excessive back pressure.
If you notice something out of the ordinary with your vehicle, consult an automotive professional as soon as possible, Berkeley Bob’s is just a phone call away and can put your mind at ease.
Images courtesy of r/dalle2
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