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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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Old 06-20-2013, 08:28 PM
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matt540 matt540 is online now
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Mein Auto: DINAN 540
Helping a friend

He has a 2007 328, he starts his car and the A/C is on full blast his idle drops 200-300 rpm and jumps back up it happens repeatedly. Car only does this in drive,reverse, and when stopped at a stop sign. This never happens when in park. Doesn't happen when the A/C is off. Help me help a friend. Thanks!
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Old 06-21-2013, 08:48 AM
Watchme Watchme is offline
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pretty normal I think... higher load when AC clutch engages and idle is corrected by ECU.
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Old 06-21-2013, 11:14 AM
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It does it repeatedly, just doesn't seem normal.
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Old 06-21-2013, 12:13 PM
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matt540 matt540 is online now
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It feels like the whole car jerks when it happens.
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