Why doesn't the Nissan Sunny move when stepping on the accelerator?
1 Answers
In fact, there are many reasons why a Nissan Sunny doesn't move when stepping on the accelerator, and it cannot be directly determined. Multiple factors can lead to the above malfunction, such as low fuel pressure or air in the fuel line, poor air flow meter signal in the circuit, poor throttle position sensor signal, damaged ignition coil, delayed ignition timing, or spark plug gaps that are too large or too small, all of which can cause the car to not accelerate when stepping on the accelerator. Additionally, a clogged three-way catalytic converter could also cause this situation. Moreover, if the RPM rises normally and the engine sound is loud, it might be in an idle state without being in gear, requiring a transmission check. If the RPM doesn't rise at all when stepping on the accelerator, a comprehensive engine inspection is needed. If this occurs, it is advisable not to take action on your own and to go to a 4S shop for relevant checks as soon as possible. However, since we're on this topic, we can list a few fault cases: If the car doesn't move when stepping on the accelerator, it is recommended to check the spark plugs, high-voltage lines, and ignition coils at a service station, check the fuel pump pressure, see if the fuel injectors are clogged, and also check if there is any misfiring in the ignition system. Secondly, this might also be a common issue with automatic transmissions. If it's a manual-automatic transmission, try switching to manual mode and pulling back 1-2 gears; if it's a pure automatic, try releasing the accelerator slightly and then pressing it down firmly again. Furthermore, this could also be a fuel quality issue. If you've recently refueled and this problem didn't exist before refueling, then there's a 70% chance that the fuel from the gas station is problematic, possibly mixed with water or other liquids. If water enters the engine through the intake, it could cause the air pipe to bend or the piston to be damaged, leading to insufficient cylinder pressure and thus the car not accelerating when stepping on the accelerator. Another possibility is long-term lack of maintenance, causing various systems to age and resulting in the car not accelerating when stepping on the accelerator.
