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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 6 Series > E63 / E64 6 Series (2003 - 2013)

E63 / E64 6 Series (2003 - 2013)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 03-16-2013, 11:31 PM
Dynamicfigure Dynamicfigure is offline
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Location: WA
 
Join Date: Sep 2010
Posts: 106
Mein Auto: 2005 - 645 Coupe
Lurching at 35 mph

My car (a 2005 645 - 88K miles) has started lurching - just a quick hesitation, like it is not getting full power and then a tiny kick when it is over (all in about 1/2 a second) at around 35 mph. The problem was there before but went away for awhile (I quit using the DS mode as it seemed to make it appear - now it seems to go away when I put it in DS mode?). It was not as acute or noticeable as it is now though. Any thoughts, or experiences on the issue?

Last edited by Dynamicfigure; 03-16-2013 at 11:45 PM.
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  #2  
Old 03-17-2013, 01:24 PM
HerbP HerbP is online now
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Location: Georgia
 
Join Date: Jul 2009
Posts: 2,758
Mein Auto: 2005 645Ci & 2007 750Li
Are you getting any codes? Sounds like a coil pack is starting to fail, or short out. If this is the case, the jerk happens in a higher gear, at partial throttle. Full throttle will usually clear the hesitation, then run fine. Other problems could be a weak battery, or fuel related problem.


Good Luck!
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Old 03-18-2013, 08:56 AM
645/333's Avatar
645/333 645/333 is offline
Michael
Location: uk
 
Join Date: Jun 2010
Posts: 1,178
Mein Auto: Black Sapphire BMW Z4 3L
I would consider also doing a BG44k fuel system clean, at your mileage it is well worth it if you have not done anything before, plus you should also have had the fuel filter replaced by now ?????
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