Inrecent years, independent research has helped clear up many myths within the Pontiac hobby. One area, however, that still remains shrouded in mystery is the midyear emissions system change that ...

A purge valve is a vital component of a vehicle's evaporative emission control (EVAP) system. Its function is to control the flow of fuel vapors from the fuel tank and evaporative canister into the ...

A drive cycle is a standardized test procedure to measure a vehicle's emissions and fuel economy. The test is designed to mimic typical driving patterns, such as city and highway driving, and to ...

Hondas are known for their reliability, but like any other complex machine, they can run into the occasional issue. One of these is the dreaded "Check Emission System" or "Emissions System Problem" ...

A tuning company in Roseville, California will pay $1 million in fines and penalties after it pleaded guilty to selling thousands of products that allowed pickup truck owners to bypass the emissions ...

Ram will recall more than 600,000 heavy-duty pickup trucks to reprogram their emissions-control systems after it was discovered that the trucks contain software that allowed them to emit more than the ...