Since turbocharger performance is monitored by the ECM, lack of boost pressure can cause the ECM to turn on the CEL. A blocked air filter can prevent the turbocharger from building sufficient boost pressure. A turbocharger uses exhaust gases to force pressurized fresh air into the engine. Turbocharger performance: Turbocharger-equipped vehicles are particularly susceptible to clogged air filter issues.If it detects an engine misfire, it turns on the CEL. For this reason, the ECM constantly monitors the engine misfire status. A rich fuel mixture can also foul the spark plugs, causing a misfire.Īn engine misfire can greatly increase vehicle emissions. This results in incomplete combustion and an engine misfire. A contaminated air filter can restrict engine airflow, resulting in a rich air/fuel mixture. Engine misfire: A misfire results from incomplete combustion inside the engine.In response, it turns on the check engine light (CEL). The ECM recognizes this is an abnormal condition that could affect vehicle emissions. When there is a lack of oxygen in the exhaust (a rich condition), the oxygen sensor will consistently send a signal to the ECM that’s above 450 mV. ![]() The ECM monitors the level of oxygen in the exhaust via one or more oxygen sensors. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |