问：传输。更换齿轮时关闭汽车。

Hi there, thanks for writing in. This is a common issue on a lot of Nissan vehicles. Most of the time it is due to a faulty throttle body. The throttle motor fails at times and cannot keep the throttle plate open to the right angle. In some other cases the throttle bodymay just be dirty and can be cleaned。I usually start by doing a visual check and cleaning it if it is dirty. If that does not help then I replace it. Most of the time before I replace it I will drive the vehicle with my scan tool installed to check the throttle readings and some of the time you can see the throttle angle change when it is not supposed to. I have also seen the曲轴位置传感器cause this but most of the time this is on the 2010 and older models. If you are looking to have this repaired, consider YourMechanic, as a certified mechanic可以来您的家或办公室诊断和维修。