A look into the exhaust gas recirculation, or EGR, valve - an important piece of the automotive emissions system.

Knowing your vehicle can become beneficial in emergencies. If you are ever in a situation where you want to repair something quickly or change a component, there is nothing more cost-effective than a ...

Controlling vehicle emissions in modern vehicles involves more than just bolting up a catalytic converter and calling it a day. There are other components that effectively, and intuitively, cut out ...

Q: I have a 1990 Toyota Corolla LE, with automatic transmission, which I purchased new. It now has 101,000 miles on it. In all the years I’ve had it, there was never a major problem. All the service ...

Beginning in October, the exhaust from newly manufactured diesel engines must produce half the oxides of nitrogen (NOx) of engines produced today with no increase in particulate matter (PM). This is ...