98 Ford taurus 出现问题了！帮忙诊断一下！

拿出钥匙点火，车发动，声音正常。踩住刹车，变速杆移至D,没放刹车，这是从车前部底部发出内饰电铃的声音，好像什么部件螺丝松了。放开刹车，踩油门声音消失，正常行驶。遇红灯，刹车，声音出现。变绿灯，松刹车，踩油门加速，声音消失。

请问，什么原因？谢谢！

所有跟帖： 

• fan blades hit something when in gear. open hood and check fan a -fixanycars- ♀ (96 bytes) () 04/09/2010 postreply 14:54:51

• IF fan blades hit something, the noise always ON. But -三剑客- ♀ (92 bytes) () 04/09/2010 postreply 15:26:24

• 回复：IF fan blades hit something, the noise always ON. But -Ilovescrewdriver- ♂ (30 bytes) () 04/09/2010 postreply 15:32:19

• engine moves forward a little bit when you hold brake and engage -fixanycars- ♀ (147 bytes) () 04/09/2010 postreply 16:02:35

• you might need new engine mountings. -fixanycars- ♀ (0 bytes) () 04/09/2010 postreply 17:14:05

• good point, change engine mounts -internuts- ♂ (0 bytes) () 04/09/2010 postreply 18:29:28

• Sounds familier, you are probably right. -11940- ♂ (167 bytes) () 04/10/2010 postreply 09:44:54