故障现象一辆2014款路虎发现4车,搭载3.0 L机械增压汽油发动机和ZF型8速自动变速器,累计行驶里程约为15万km。据车主反映,该车发动机故障灯点亮,冷车状态下起动发动机,发动机转速高达3 000 r/min,3 min后发动机转速才会降下来。故障诊断接车后首先试车验证故障现象,接通点火开关,起动发动机,发动机能顺利起动着机,仪表盘上发动 Trouble A 2014 Land Rover found four cars with a 3.0 L supercharged gasoline engine and a ZF eight-speed automatic transmission with a cumulative mileage of about 150,000 km. According to the owner, the car engine fault lights lit, start the engine in cold state, the engine speed up to 3000 r / min, 3 min after the engine speed will come down. Fault diagnosis After the first test car to verify the fault phenomenon, turn on the ignition switch, start the engine, the engine can start a smooth machine, dashboard