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Old 11-25-2007, 07:51 PM
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80300dbenz 80300dbenz is offline
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Join Date: Mar 2006
Location: Houston
Posts: 125
Knocking noise at start up.

I have a 1990 300SE and experiencing some wierd nosie while starting it up.
The moment the key is turned and the car starts to crank there is a horrible knoking sound comeing from where I think is the center console or passenger floor area. The nosie continues about 5 seconds and then just fades away.
Is there a problem with the drive shaft? Transmission mounts? or something just loose?
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