问：发动机运转粗糙，不会加速

嗨，感谢您的写作。凸轮轴和曲轴位置传感器是您描述的症状的可能原因。通过制造商的推荐程序对这些传感器进行专业测试，这将是我的最佳建议。If one of these two sensors fails the test, it is a good idea to go ahead and change them both due to the fact that they work together to send a signal to the vehicle’s PCM and they have likely been on the vehicle for the same amount of time. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to为您检查并诊断此问题，并根据需要进行或建议进行任何维修。