2. Clogged fuel filter: A clogged fuel filter can restrict the flow of fuel to the engine, causing hesitation during acceleration.
3. Faulty fuel injector: A faulty fuel injector can cause inconsistent fuel delivery, resulting in hesitation during acceleration.
4. Vacuum leak: A vacuum leak can cause the engine to run lean, leading to hesitation during acceleration.
5. Faulty throttle position sensor: A faulty throttle position sensor can send incorrect signals to the engine control unit (ECU), causing hesitation during acceleration.
6. Faulty oxygen sensor: A faulty oxygen sensor can provide incorrect feedback to the ECU, affecting fuel delivery and causing hesitation during acceleration.
7. Catalytic converter issues: A clogged or damaged catalytic converter can restrict the flow of exhaust gases, leading to hesitation during acceleration.
8. Transmission problems: Transmission issues, such as slipping or worn-out clutches, can cause hesitation during acceleration.
9. Engine control unit (ECU) issues: Software problems or hardware failures in the ECU can cause various issues, including hesitation during acceleration.
Diagnosing the exact cause of hesitation during quarter throttle acceleration can be complex and requires proper inspection and testing. If the hesitation persists or worsens, it is recommended to have the vehicle diagnosed and repaired by a qualified mechanic.
