车型:林肯城市 V8,1993年生产。故障现象:发动机抖动,加不上速,故障灯亮。故障排除:此车由其他修理厂转入我厂,其间已更换过高压线、火花塞,节气门体已清洗,怠速马达工作正常。基于上述情况,我们决定先从简单的入手,用红盒子 SCANNER检测,该车的诊断插座在发动机室内右悬架旁边。此车的故障码有两个:136…KOER 中第2氧传感器混合气过稀;219…SPOWT 电路。有了故障码,就有了修车的依据。检查此车的数据流,发现第2氧传感器信号几乎无变化。将车架起来查看,没异常。氧传感器的接头不易用手摸到,当用一个小钩子去拉动线束时,发现接头掉了下来,原来是接头没有拧住。重新固定,落下车,再次检测,发动机运转稍有平稳,氧传感器信号正常。接下来是故障码219的排除。用正时灯检查点火正时,发现点火时 Model: Lincoln City V8, born in 1993. Symptoms: engine jitter, plus not speed, fault light. Troubleshooting: This car transferred by other repair shop into our plant, during which have been replaced by high voltage lines, spark plugs, throttle body has been cleaned, idling motor is working properly. Based on the above, we decided to start with a simple start, with the red box SCANNER detection, the car’s diagnostic socket next to the right suspension in the engine room. This car has two fault codes: 136 ... KOER in the second oxygen sensor mixture is too thin; 219 ... SPOWT circuit. With the fault code, there is a basis for repairing the car. Check the car’s data stream, found no significant change in the second oxygen sensor signal. The frame up to see, no exception. Oxygen sensor connector is not easy to touch the hand, when using a small hook to pull the harness, the connector fell off, the original connector is not screwed. Re-fixed, drop off the car, test again, the engine running a little stable, oxygen sensor signal normal. The next is the exclusion of fault code 219. Check the ignition timing with the timing light and find the ignition