![]() The catalytic converter consists of a catalyst that helps convert the car’s pollutant gases into less harmful pollutants. The catalytic converter is a device located in the exhaust system of a car. You can ask a friend to press the accelerator pedal while you try to listen under the car if the rattling noises are coming from the catalytic converter or somewhere else. This will cause a rattling noise from the catalytic converter when you rev your car engine. Inside the catalytic converter, there is a “honeycomb” that can get worn out and this can cause the honeycomb to break apart into pieces. If your engine is misfiring, you should get it fixed as soon as possible, because it can lead to further expensive repairs if you just ignore it. This reduced airflow leads to overheating due to an excessive amount of unburned gases and may also lead to a misfiring engine. When the catalytic converter is clogged, it restricts the flow of oxygen in engines, and engines require a lot of oxygen for proper fuel combustion. If you have a yearly car inspection in the state or country you live in, your car will most likely fail an emission test or smog test. You will often notice this by seeing dark exhaust smoke coming from your exhaust pipe during acceleration or at idle. The overall purpose of the catalytic converter is to remove bad emissions, so this is probably quite obvious. This will cause an increment of the car engine’s emissions. If your catalytic converter is damaged or clogged, there is a risk that the catalytic converter is not doing its job properly anymore. This is because it may take 2-3 seconds for the pressure to rise in the exhaust system until the engine is choked and shuts off. If your car starts for 2-3 seconds and then dies, it could definitely be caused by a clogged converter. It will also create back pressure which will cause the engine to struggle to get rid of the exhaust fumes. If the catalytic converter is clogged, the engine will get too much fuel that the engine cannot burn. If your catalytic converter is clogged, it could also create excessive heat inside the engine which could damage other parts really fast and therefore you should not drive your car if you suspect that the catalytic converter is bad. This mixture then ignites in the converter due to the heat and melts its inner material, causing even more blockages. It could also happen if your engine is not running as it should and unburnt fuel will enter the catalyst. If you see that the catalytic converter’s housing has turned blue or some other color, it could mean that the catalytic converter is clogged and creates excessive heat. The combustion of this excessive air-fuel mixture causes an odor smell like rotten eggs or burnt sulfur, which is an obvious indication of your catalytic converter’s malfunction. When the catalytic converter is clogged, it will restrict the airflow of exhaust fumes so that the engine’s air-fuel mixture will get rich (too much fuel, leading to unburnt fuel) Therefore, a bad catalytic converter will most often cause a higher fuel consumption, even if lower is possible in some cases. While a better gas mileage may sound like a good deal, it can damage your engine and may cause even more expensive repairs.ĭue to improper combustion of the fuel when the exhaust is clogged, it will make your car engine to be much less efficient and it needs to work harder for the same amount of power. High or low fuel consumptionīetter or worse gas mileage is one of the symptoms of a poor catalytic converter. Compare the flow to a similar car if possible. If you get a meager amount of exhausts coming out, you might have a clogged catalytic converter. To check if your catalytic converter is clogged, keep your hand close to the exhaust pipe end and ask someone to push the accelerator pedal to increase your car’s RPM to 2000. Mechanics often misdiagnose a faulty catalytic converter with other components like a bad oxygen sensor or any other sensor. are fine, then it could be the catalytic converter that’s bad. If you observe delays when accelerating or a decrease in power when driving in steep areas, while all other parts like spark plugs, filters, sensors, etc. ![]() COST TO REPLACE NEON DRIVE CHAIN CODEThe most common trouble code when it comes to a bad catalytic converter is the P0420 code. ![]() When checked with a compatible OBD scanner, it will show you a catalytic converter-related trouble code that must be decoded with the help of the operating manual. The check engine light, one of the most obvious indicators of a malfunction with your car, is also one of the strongest indicators of a bad catalytic converter. ![]() How do you fix a catalytic converter without replacing it? Bad or Clogged Catalytic Converter Symptoms 1. ![]()
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