Here are the steps you need to take to troubleshoot your car's jerking and check engine light:
1. Check the Engine Oil Level:
Low engine oil can cause the engine to run rough and jerk. Check the oil level and add more if necessary.
2. Check Spark Plug Wires:
Faulty spark plug wires can cause the engine to misfire and jerk. Inspect the spark plug wires for any cracks or damage and replace them if needed.
3. Inspect Fuel Filter:
A clogged fuel filter can restrict fuel flow and cause the engine to jerk. Check the fuel filter and replace it if it's dirty or clogged.
4. Check the Fuel Injector:
Fuel injector issues can lead to fuel starvation, causing the engine to jerk. Clean or replace the fuel injectors as necessary.
5. Inspect the Ignition Coil:
A faulty ignition coil can cause misfiring and jerking. Check the ignition coil and replace it if it's damaged.
6. Clean the Throttle Body:
A dirty throttle body can cause the engine to idle roughly and jerk. Clean the throttle body with a throttle body cleaner according to the manufacturer's instructions.
7. Check Vacuum Hoses:
A broken vacuum hose can cause the engine to run rough and jerk. Inspect the vacuum hoses and replace any damaged or cracked ones.
8. Check Transmission:
Transmission problems can also lead to jerking. If the transmission fluid is low, add more. If the transmission is slipping or shifting roughly, you may need to have it serviced or repaired.
9. Read Check Engine Light Codes:
The blinking check engine light indicates that there is a problem that requires immediate attention. You should get the error codes read at an auto parts store or mechanic shop. The error codes will provide more specific information about the issue.
10. Have the Engine Checked:
If you've tried all the above and your car is still jerking, it's best to take it to a qualified mechanic for further diagnosis and repair. The mechanic can identify the exact problem and perform the necessary repairs.
