一台日本产五十铃汽车,在以正常速度行驶时,变速箱后部隐约传来咕噜咕噜的异常响声,且随着路面的起伏和左右转弯的行进,此异常声音时有时无。起初认为是后轮在摩擦着某物,随即下车进行了外部检查,并未发现有何异常现象。随着车辆的继续行驶,此异常响声也越来越严重。 A Japanese-made Isuzu car, at normal speed, behind the transmission looming gurgling abnormal noise, and with the ups and downs of the road and left and right turn, sometimes the anomalous sound. At first it was thought that the rear wheel was rubbing something, and immediately got off to carry out an external examination and found no abnormalities. As the vehicle continues to travel, the abnormal noise is also getting worse.