Lincoln Navigator pulsing and jerking during acceleration with possible gear grinding issue on Lincoln Navigator

Some Lincoln Navigator owners report experiencing pulsing and jerking during acceleration, which may be attributed to a misfire that commonly causes such sensations. Additionally, issues like a clogged air filter, dirty mass air flow sensor, clogged fuel filter, fuel pump malfunction, faulty oxygen sensor, dirty throttle body, worn spark plugs, or a clogged catalytic converter can lead to slow acceleration. If the jerking escalates to engine bucking, it may signal a more serious problem requiring attention, especially if the check engine light is illuminated. Some owners also note that the vehicle shakes during acceleration, particularly at low RPMs, potentially indicating a misfire. Furthermore, symptoms such as good power when the engine is cold but complications arising as it warms up, including decent idling and slow acceleration, could suggest specific engine performance issues. It is recommended that owners address these symptoms promptly to diagnose and resolve the underlying problems effectively.