Spark Plugs: Worn-out spark plugs can cause misfires, leading to jerking and bucking. Check the condition of your spark plugs and replace them if necessary.
Ignition Coils: Faulty ignition coils can also cause misfires. Ensure the ignition coils are functioning properly and replace any defective ones.
Fuel System Issues: Clogged fuel filters or dirty fuel injectors can restrict fuel flow to the engine, resulting in jerky performance. Clean the fuel filter and injectors or replace them if needed.
Vacuum Leaks: Leaks in the vacuum system can cause incorrect air-fuel mixtures, leading to engine stalling and jerking. Check for any vacuum leaks and repair them as soon as possible.
Faulty Oxygen Sensor: A faulty oxygen sensor can provide incorrect readings to the engine's computer, affecting its ability to control air-fuel mixtures. This can cause the engine to buck and jerk, especially after warming up. Check the oxygen sensor's condition and replace it if necessary.
Transmission Problems: In some cases, jerking and bucking after the car warms up can be related to transmission issues, such as faulty transmission solenoids or a low transmission fluid level. Check the transmission fluid level and condition, and take the car to a qualified mechanic for further diagnosis if necessary.
Remember, diagnosing car problems can be complex, so it's advisable to consult with a professional mechanic experienced in automotive diagnostics and repairs to identify the exact cause of the jerking and bucking issue in your car and provide the appropriate solution.
