Land Rover Discovery engine runs rough and quivers on Land Rover Discovery

Some Land Rover Discovery owners report experiencing engine issues characterized by rough running and quivering, which may be caused by several factors. These include faulty fuel injectors that can lead to engine misfires and rough idling, as well as problems with ignition coils that affect overall engine performance. Additionally, a malfunctioning Engine Control Unit (ECU) may contribute to engine failure and irregular idling. Some owners also note that carbon buildup can cause the Exhaust Gas Recirculation (EGR) valve to fail or stick, resulting in poor performance. Furthermore, issues with the EGR valve itself, such as it sticking open or closed, can exacerbate rough idling and performance problems. To address these concerns, it is advisable for owners to inspect the fuel injectors and ignition coils, clean or replace the EGR valve, and check the ECU for any malfunctions.