Nissan Sentra acceleration issue, cannot exceed 20 mph with fluctuating RPMs on Nissan Sentra

Some Nissan Sentra owners report experiencing acceleration issues, where the car cannot exceed 20 mph and RPMs fluctuate. These problems may stem from a sticking brake switch, which has been identified as a cause of similar acceleration issues. Additionally, owners may face challenges related to the CVT transmission, such as overheating and fluid depletion, leading to intermittent acceleration problems. If left unaddressed, fluctuating RPMs could potentially damage critical engine components like pistons, bearings, and cylinders over time. Other potential culprits include a malfunctioning fuel pump, faulty oxygen sensor, worn spark plugs, clogged fuel filter, faulty airflow sensor, or clogged fuel injectors. To effectively troubleshoot these issues, it is advisable for owners to check the brake switch, monitor the CVT transmission, address any engine component damage, and inspect the fuel system components as necessary.