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Car Vibration Coming From Engine??

1K views 3 replies 3 participants last post by  94BMW325i 
#1 ·
So when I go below 20 mph there is a vibrating noise that sounds almost like an airplane landing. I described it to my dad and bro and they say it is engine compartment vibrations. I am guessing the reason I can't hear it above 20 mph or so is because of the sound of the engine when accelerating. Is there a common piece of plastic that can become loose in the engine compartment?

Oh yeah I drive a 94 325i.
 
#2 ·
check that all the blades are on your motor fan. If a blade or two breaks off the imbalance causes the motor to shake/vibrate.
I had the problem on my 1994 325i, blades started breaking becasue the housing on the radiator/fan came loose and came into contact with the blades. Car had a terrible vibration and once I changed it, the car felt very smooth. Cost of Blade from the BMW Dealership (in South Africa) $27, Had it fitted in myself which too about 30 minutes.
 
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