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<blockquote data-quote="macgy" data-source="post: 624253" data-attributes="member: 303">My fren e39 M54 530 have d same problem, diagnotic test shows coil #6,&nbsp; already changed all coil, ok for a while then problem recur, in between&nbsp; she has changed the coil twice ( under warranty), DISA, air intake,&nbsp; spark plug to NGV, funny thing is every time d car go to d work shop, it&nbsp; is ok for a few days, anyway the engine vibration doesn&#039;t occur every&nbsp; day but it is getting more n more frequent, this has been going on for 2&nbsp; years until I decided to help her to change d CCV ( I though CCv could&nbsp; contribute to vibration n also because d car consume little bit oil,&nbsp; during the repair i found out that d throttle body is missing 2 screws,&nbsp; maybe some mechanics forgot to screw back, I believe that d missing&nbsp; screws r the main reason for d vibration....as d engine got hot, d leak&nbsp; must hv contribute to d vibration but i don&#039;t know y it always pt to&nbsp; coil #6, anyway d car has no more vibration after d repair n consume&nbsp; less fuel too! went for diagnostic after 1 week, test result.. no fault&nbsp; code!!So before u spend big, check all your connection! ensure there is no leak .</blockquote>

[QUOTE="macgy, post: 624253, member: 303"] My fren e39 M54 530 have d same problem, diagnotic test shows coil #6, already changed all coil, ok for a while then problem recur, in between she has changed the coil twice ( under warranty), DISA, air intake, spark plug to NGV, funny thing is every time d car go to d work shop, it is ok for a few days, anyway the engine vibration doesn't occur every day but it is getting more n more frequent, this has been going on for 2 years until I decided to help her to change d CCV ( I though CCv could contribute to vibration n also because d car consume little bit oil, during the repair i found out that d throttle body is missing 2 screws, maybe some mechanics forgot to screw back, I believe that d missing screws r the main reason for d vibration....as d engine got hot, d leak must hv contribute to d vibration but i don't know y it always pt to coil #6, anyway d car has no more vibration after d repair n consume less fuel too! went for diagnostic after 1 week, test result.. no fault code!! So before u spend big, check all your connection! ensure there is no leak . [/QUOTE]

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