E60 Discussion Anything and everything to do with the E60 5 Series. All are welcome!

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Old Apr 5, 2009 | 07:01 PM
  #1  
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sometimes upon startup of my vehicle i hear a weird sound kinda like KRRR! for a second exactly at startup.

it doesnt sound too good, but its only for second and its only sometimes, (maybe temperature related???)

any ideas on what it could be?...
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Old Apr 5, 2009 | 07:30 PM
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Probably the VANOS. My E90 made some strange noises on startup occasionally and eventually my camshaft sensor failed. I think the sensor was flakey for some time.
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Old Apr 6, 2009 | 09:14 AM
  #3  
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what is VANOS ??? will i know when the camshaft sensor goes bad ???

thanks
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Old Apr 6, 2009 | 09:17 AM
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Originally Posted by tk9' post='837946' date='Apr 6 2009, 10:14 AM
what is VANOS ??? will i know when the camshaft sensor goes bad ???

thanks

Before Gene does it lol:

VANOS

also worthy of understanding - VALVETRONIC
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Old Apr 6, 2009 | 09:28 AM
  #5  
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Originally Posted by advancedlogic' post='837949' date='Apr 6 2009, 10:17 AM
Before Gene does it lol:

VANOS

also worthy of understanding - VALVETRONIC
me?
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Old Apr 6, 2009 | 09:33 AM
  #6  
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can this VANOS variable cause a slight hesitation in between drive gears?

ex.) when the accelerator is released and the rpms reach in between 1 and 2 they kinda flutter up and down while i feel a slight hesitation??? weird

i'm having that problem as well, thought it may be linked to that sensor?

i appreciate the help fellas, this forum is awesome
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Old Apr 6, 2009 | 09:38 AM
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Originally Posted by advancedlogic' post='837949' date='Apr 6 2009, 10:17 AM
Before Gene does it lol:

VANOS

also worthy of understanding - VALVETRONIC
TFF! You gotta be quick on the draw to beat Gene on a link!!
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Old Apr 6, 2009 | 11:49 AM
  #8  
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Originally Posted by tk9' post='837453' date='Apr 6 2009, 06:01 AM
sometimes upon startup of my vehicle i hear a weird sound kinda like KRRR! for a second exactly at startup.
When did you have your car served at the dealers?
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