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故障现象一辆2003年产马自达6轿车(CA7230AT),搭载2.3 L发动机及自动变速器,行驶里程为22.1万km,据驾驶人反映,该车加速无力,并经常伴有发动机不规则抖动的故障现象且发动机故障指示灯点亮。故障诊断和排除试车验证故障,发现在急加速且将加速踏板踩到底时,发动机加速无力,车速只能维持在40 km/h,发动机转速在2 000 r/min左右波动,发动机严重抖动且发动
Fault phenomenon A 2003 Mazda 6 sedan (CA7230AT), equipped with 2.3 L engine and automatic transmission, mileage of 221,000 km, according to the driver reflects the car acceleration weakness, and often accompanied by irregular engine jitter phenomenon And the engine fault indicator is lit. Fault diagnosis and troubleshooting test to verify the failure and found that in the rapid acceleration and the accelerator pedal to the end, the engine acceleration weakness, the vehicle speed can only be maintained at 40 km / h, the engine speed fluctuates around 2 000 r / min, the engine is very jitter and start