While O2 sensors have no fixed replacement schedule, your driving style and the health of other engine components can ...

The catalytic converter in your car's exhaust system has a complex emissions-related job to perform. Placed between the engine and the muffler, it reduces the amounts of the three primary pollutants ...

Forbes contributors publish independent expert analyses and insights. Jim Gorzelany is a veteran automotive journalist. This voice experience is generated by AI. Learn more. This voice experience is ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

If you’re like most car owners, you probably don’t think much about your car’s oxygen sensors until they are causing a problem. But did you know that a bad oxygen sensor can impact your car’s ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? As you've heard many times, your car's engine is nothing but a big air pump. It sucks ...

This article was researched using 4 sources. See our methodology and corrections policy. As a vital component of a vehicle’s emissions control system, oxygen sensors play a crucial role in engine ...

SMOG checks or emission tests exist due to the U.S. Environmental Protection Agency's (EPA) regulation on passenger vehicles. Each state sets limits of nitrogen oxides (NOx) from emitting past certain ...

While your car can’t talk, it communicates with you using chimes, icons, and messages. One icon that you should never ignore is the check engine light. It turns on when the car’s onboard computer ...

As with a lot of automotive maladies, there are a number of potential causes as to why a car stalls in cold weather. Many have to do with the fact that a richer fuel mixture is required when an engine ...