A charcoal canister captures potentially harmful emissions from a car’s engine and prevents them from being released into the atmosphere. A charcoal canister, also known as a vapor canister, is the part of a car’s evapor... More »

When troubleshooting a Toyota RAV4, check for problems with the engine's evaporative system and make sure that the latest software update is installed in order to counter a common catalytic converter problem. Additionall... More »

www.reference.com Vehicles Car Parts & Maintenance

In an evaporative emission control system, the purge valve works by controlling the amount of vapor from the charcoal canister. In modern cars, the engine computer controls the purge valve. More »

The Evaporative Emission Control System (EVAP) keeps fuel vapors from leaking into the atmosphere by collecting and storing the vapors in a canister filled with carbon pellets. The carbon pellets collected by the EVAP sy... More »

Within an evaporative emission control system, a charcoal canister vent control valve prevents gasoline vapor emissions from escaping into the atmosphere. The Environmental Protection Agency requires that all new cars be... More »

www.reference.com Vehicles Car Parts & Maintenance Engine

Smog certifications for a car can be obtained by taking the car to a service station authorized to run an emissions test and grant a certification. These stations are typically found by checking with the department of mo... More »

www.reference.com Vehicles Car Parts & Maintenance

A car's electronic control module is the computer responsible for providing fuel to the engine and controlling the quality of the car's emissions. The ECM uses a microprocessor and software to analyze and respond to the ... More »