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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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Old 11-05-2012, 05:15 PM
papabmw papabmw is offline
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Location: Denver
 
Join Date: Nov 2012
Posts: 6
Mein Auto: 650i Covertible
Rough Idle on Cold Start

I have a 2007 650i Convertible. As the weather has gotten colder, I have noticed that on cold starts, it has a rough idle. It will stumble 500 RPM's in the first 15 seconds. I let it warm up for a minute or so and put it in drive. It then will stumble a little and the transmission shifts hard. 2-5 minutes into the drive and it is all fine.

I am going to clean the IAC, IAT, and MAF and see if that helps.

Does the N62 motor have a history of issues with the Vanos? Motor has 36k miles on it.

Thanks!
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2007 650i Convertible

Last edited by papabmw; 11-05-2012 at 07:05 PM.
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