Volvo developed Precision Flow exhaust-gas recirculation (EGR) to improve fuel economy by 3 percent even as they met EPA's 2007 emissions standards for on-road diesel engines. An electronic ...

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 ...

All 2005-07 Acura RL sedans, in addition to 2008 models built from VIN JH4KB16..8C000001 through JH4KB16..8C004681, may turn on the check engine light and store DTC P0401 (insufficient EGR flow) in ...

Q: I took my car to my mechanic for the check engine light being on. He checked the codes and said it’s an “EGR fault” He said it would be a couple of days before he could get to it. He said I could ...

ETB (Electrical Turbo Blower) raises exhaust-gas pressure to overcome the pressure difference between exhaust gas and scavenging air receiver by actively controlling the exhaust gas flow; strategic ...