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A/C - Howling Rough Running Noise With Compressor ON SI B64 10 10 Heating and Air Conditioning

Technical Service Bulletin # 641010 Date: 110701 A/C - Howling Rough Running Noise With Compressor ON SI B64 10 10 Heating and Air Conditioning June 2011 Technical Service This Service Information bulletin supersedes SI B64 10 10 dated December 2010. [NEW] designates changes to this revision SUBJECT [NEW] Howling/Rough Running Noise when the A/C Compressor is Engaged MODEL E82, E88 (1 Series) E90, E91, E92, E93 (3 Series) [NEW] E89 (Z4) 2010 BMW 328i Sedan (E90) L6-3.0L (N51)   50 [NEW] 1 Series and 3 Series vehicles equipped with the N51 and N52 engine produced from 8/31/08 [NEW] Z4 vehicles produced from 2/28/09 SITUATION When the air conditioning system is on and the A/C compressor is activated, a howling noise may be heard between 800 and 2,400 rpm. CAUSE Vibration in the air condition suction line (low side) PROCEDURE See attachment PARTS INFORMATION [NEW] WARRANTY INFORMATION ATTACHMENTS 2010 BMW 328i Sedan (E90) L6-3.0L (N51)   51 2...
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