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Old 01-30-2013, 01:39 PM
550isport 550isport is offline
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Location: Connecticut
Join Date: Aug 2007
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Mein Auto: 550i
cold start stalling anyone? 35i perf. pack..

Hello all,

Our 13' X6 3.5i with performance pack does not like to start on cold mornings (ambient below 20).

It turns over and catches, then the revs go up to @1500 then it immediately sputters down to below a normal idle. It does this once or twice before calming down to a normal (choked) rpm for warming up - around 800 maybe?

Thing is if you do anything while the engine is yo-yoing - like turn the steering wheel or touch the gas pedal - it stalls.

The car has not been back to the dealer (for service at least) since delivery back in April 12'. It's possible a software update might be out there and not yet installed.

Has anyone else had a similar experience?

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