故障现象 一辆奔驰C280轿车,装用直列6缸电喷发动机,后轮驱动结构。只要高速行驶,变速箱中就“嗷嗷嗷”叫,车速越高,叫声越大。 故障分析与判断 据车主介绍,变速箱已抬下来剖检过两次,有故障嫌疑的轴承,均更换了新件,大修包也换了一个,异响却一点“没 Symptom A Mercedes C280 sedan, equipped with inline 6-cylinder EFI engine, rear-wheel drive structure. As long as high-speed driving, the gearbox “嗷 嗷 嗷” called, the higher the speed, the louder. Fault Analysis and Judgment According to the introduction of the owner, the transmission has been down to autopsy twice, the suspect bearing, have replaced the new pieces, overhaul bag has changed one, but the noise is a little "no