1. Check Engine Light: The check engine light is one of the most common indicators of a problem with the catalytic converter. If the check engine light is on, it's important to have the vehicle's emission system diagnosed to determine the cause.
2. Reduced Performance: A bad catalytic converter can cause the vehicle's performance to suffer, as the catalytic converter helps to clean the exhaust gases and improve engine efficiency. If you notice a decrease in acceleration or power, it could be a sign of a bad catalytic converter.
3. Engine Stalling: In some cases, a bad catalytic converter can cause the engine to stall or misfire. This is because the catalytic converter can become clogged and restrict the flow of exhaust gases, which can lead to engine problems.
4. Loud Exhaust Noise: A bad catalytic converter can also cause the vehicle's exhaust to become louder than normal. This is because the catalytic converter helps to muffle the sound of the exhaust gases.
5. Rotten Egg Smell: If you notice a rotten egg smell coming from the vehicle's exhaust, it could be a sign that the catalytic converter is failing. This smell is caused by hydrogen sulfide gas, which is produced when the catalytic converter is not working properly.
6. Increased Emissions: A bad catalytic converter can also cause the vehicle's emissions to increase. This is because the catalytic converter helps to convert harmful pollutants into less harmful substances.
If you suspect that the catalytic converter on your 2002 Nissan Altima may be bad, it's important to have the vehicle inspected by a qualified mechanic as soon as possible.
