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The BMW Range
3 Series
E46
engine vibrate
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<blockquote data-quote="zeedo" data-source="post: 424330" data-attributes="member: 10193"><p>If it vibrates with a/c on or off then I believe it is caused by oil separator or leaks in the three vacuum hoses connected to it(or other leaks like at vacuum pump or brake servo). It is normal to have lower idle RPM with a/c off but the vibration is certainly not. The pulley system might need to be checked (off a/c means less load=less tension) including the tensioner. My N42 was vibrating last time due to vacuum pump leak</p></blockquote><p></p>
[QUOTE="zeedo, post: 424330, member: 10193"] If it vibrates with a/c on or off then I believe it is caused by oil separator or leaks in the three vacuum hoses connected to it(or other leaks like at vacuum pump or brake servo). It is normal to have lower idle RPM with a/c off but the vibration is certainly not. The pulley system might need to be checked (off a/c means less load=less tension) including the tensioner. My N42 was vibrating last time due to vacuum pump leak [/QUOTE]
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engine vibrate
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