1. Misfiring engine: Issues such as faulty spark plugs, damaged ignition coils, or fuel injector problems can cause the engine to misfire. This can lead to a rough idling, jerking, and bucking of the engine. The warning light that comes on in this case could be the check engine light or a specific misfire code.
2. Fuel system problems: Issues such as a faulty fuel pump, clogged fuel filter, or incorrect fuel pressure can cause a lack of fuel supply to the engine. This can lead to hesitation, jerking, and bucking as the engine tries to run with insufficient fuel. The warning light that comes on could be the check engine light or a specific fuel system code.
3. Transmission issues: If the transmission is slipping, faulty shifting, or has low transmission fluid, it can cause the car to buck or jerk while driving. The warning light that comes on in this case could be the check engine light or a specific transmission code.
4. Vacuum leak: A vacuum leak can cause a lean air-fuel mixture, leading to engine hesitation and bucking. This can also trigger the check engine light to illuminate.
5. Electrical issues: Faulty wiring, loose connections, or a failing alternator or battery can lead to electrical problems that affect engine performance, causing the car to buck. The warning light that comes on in this case could be the check engine light, battery light, or alternator light.
It is important to note that the exact cause of the bucking and the warning light will vary depending on your car's specific make, model, and warning light pattern. If you experience engine bucking and a warning light, it is recommended to have your car diagnosed and repaired by a qualified mechanic as soon as possible to prevent further damage and ensure safe operation of your vehicle.
