If the exhaust is thick and really black, your vehicle is burning too much fuel somewhere in the engine. Dark exhaust can also be a sign of catalytic converter problems. If the catalytic converter is clogged, fuel will build up in the exhaust and turn it black. 2. Excessive Heat
How do you check for a clogged catalytic converter?
How does a car act when the catalytic converter is bad?
Among the bad symptoms of a compromised catalytic converter are: Sluggish engine performance, Reduced acceleration, Dark exhaust smoke, The smell of sulfur or rotten eggs from the exhaust, Excessive heat under the vehicle, Some of those symptoms can also be caused by other parts of the emissions system, so it's
What codes will a bad catalytic converter cause?
Check engine light turns on
Usually, an illuminated check engine light is the first and only sign of a bad catalytic converter. When the light pops on, your car's engine control module (ECM) will also store a diagnostic trouble code (often a P0420 code) in its memory.
Related Question What are the signs of a clogged catalytic converter?
Can a bad o2 sensor cause catalytic converter failure?
If an oxygen sensor fails, the engine computer won't be able to correctly set the air-fuel ratio, which could result in lower fuel economy, higher emissions and damage to other components, such as an overheated catalytic converter.
Will a clogged catalytic converter cause a car not to start?
If your converter is clogged, the exhaust build-up in your car can reduce performance drastically. A car with a clogged catalytic converter can feel like it has no acceleration, even if you're on the gas pedal, or can even fail to start-up.
What's the lifespan of a catalytic converter?
The catalytic converter, which converts harmful emissions into harmless gas, often lasts 10 years or longer and should be replaced only when needed. It can become clogged, physically damaged, or contaminated by oil or engine coolant.