Engine Backfires: Sensor/System
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
Inspect the following systems for proper operation:
- Exhaust Gas Recirculation (EGR) system. See EXHAUST GAS RECIRCULATION under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING - 4.6L DEVILLE & SEVILLE article.
- Positive Crankcase Ventilation (PCV) system. See appropriate article in ENGINES.
- Knock Sensor (KS) system.