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X3 E83 (2004 - 2010)
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  #1  
Old 03-16-2009, 11:52 AM
deanbooker deanbooker is offline
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x3 vibration between 1500rpm and 2000rpm

x3 vibration between 1500rpm and 2000rpm

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hi

i have just brought a bmw x3 2d 2004 it has a really annoying vibration between 1500rpm and 2000rpm any ideas?
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  #2  
Old 03-16-2009, 12:58 PM
Sonoman707 Sonoman707 is offline
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Quote:
Originally Posted by deanbooker View Post
x3 vibration between 1500rpm and 2000rpm

--------------------------------------------------------------------------------

hi

i have just brought a bmw x3 2d 2004 it has a really annoying vibration between 1500rpm and 2000rpm any ideas?

2d...?

Anyway - where do you feel the vibration? Steering wheel, body, etc.?

Could be as simple as a wheel out of balance... or as serious as worn components in the drivetrain.
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  #3  
Old 03-16-2009, 02:18 PM
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madurodave madurodave is offline
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I guess my question is the vibration at that rpm regardless of vehicle speed? Every gear at that rpm has vibration? If so, sounds like something with the engine or transmission. If it is only at a certain road speed (say 65 mph) it is probably wheel/tire balance. My 530xi had vibration which was corrected through a load balance followed by a high speed balance. It took 3 trips for the dealer and the insight of their head tech to correct the issue.
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  #4  
Old 03-16-2009, 02:18 PM
Supercourse Supercourse is offline
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Originally Posted by Sonoman707 View Post
2d...?
Must be a 2.0d from Birmingham, England - not AL.

Dean notes the vibration at a particular r.p.m. rather than speed,
- definitely sounds like either an engine or driveline vibration.

I guess if it doesn't do it while stationary at that rev range, that would rule out the engine.
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  #5  
Old 03-16-2009, 02:23 PM
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madurodave madurodave is offline
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Must be a 2.0d from Birmingham, England - not AL.

Dean notes the vibration at a particular r.p.m. rather than speed,
- definitely sounds like either an engine or driveline vibration.

I guess if it doesn't do it while stationary at that rev range, that would rule out the engine.
I have not driven a diesel for a long time. Could it be any sort of resonant frequency from the diesel engine?

Will BMW call this "normal"?
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  #6  
Old 03-16-2009, 02:35 PM
Supercourse Supercourse is offline
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Originally Posted by madurodave View Post
I have not driven a diesel for a long time. Could it be any sort of resonant frequency from the diesel engine?

Will BMW call this "normal"?
Yes, that's what I was thinking, it must be difficult to make a diesel engine run as smooth as a gasoline one through the whole range.

But if this one is out of spec., the local dealer hopefully has a way to smooth it out.
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  #7  
Old 03-17-2009, 11:00 AM
deanbooker deanbooker is offline
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hi

its not a normal sound, if you get under the car and hold the exhaust the noise stops really weird went back to the dealer they said might need to change the whole exhaust to stop the noise. the only way i can put what the exhaust does between 1500rpm and 2000rpm it vibrates like a electric tooth brush does and verbs through the car.
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  #8  
Old 03-17-2009, 01:50 PM
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madurodave madurodave is offline
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Originally Posted by deanbooker View Post
hi

its not a normal sound, if you get under the car and hold the exhaust the noise stops really weird went back to the dealer they said might need to change the whole exhaust to stop the noise. the only way i can put what the exhaust does between 1500rpm and 2000rpm it vibrates like a electric tooth brush does and verbs through the car.
It sounds like you have a broken weld somewhere. You hear the metal rubbing at those rpms.
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  #9  
Old 03-18-2009, 09:55 AM
UncleJ UncleJ is online now
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Sounds like a resonance issue with the 4 banger diesel. An inline 6 is much a smoother diesel, although some manufacturers have added balancing shafts to the 4 banger to mute the resonance. There is usually a power band where the diesel seems to vibrate more, then as you exceed that rpm range it smooths out. You learn to live with it and keep it out of that vibration range, or at least I did with my old 180Db Mercedes back in the day. Got great mileage tho'.
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