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The BMW Range
5 Series
E39
E39 M52 - Ratting Noise when stepping accelerator with air-con on
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<blockquote data-quote="sting936" data-source="post: 11239" data-attributes="member: 10595"><p>Hi Guys,Just wondering if any of you have experienced the problem below with E39 M52 single vanos ride :[1] Got rattling noise coming from engine compartment - identified to be near vanos area and compressor, and this only happen with the followings:- Air-con unit is on- Accelerating [even gently], normally happens when above 1,800 rpm- When let go accelerator, the sound will slowly goes off, or- Switching off air-con will remove it even when stepping on accelerator - Rattle noise does not come on all the time when air-con is on and accelerating [headache in troubleshooting][2] The sound is like putting a stick to a rotating fan [ruled out both fans - fans was suspected and has been changed] [3] Compressor has been suspected but then it works fine at various setting when car is idlingAny of you who got any clue or suggestion on what might be the problem?Cheers and Have A Properous Lunar New Year !! ST</p></blockquote><p></p>
[QUOTE="sting936, post: 11239, member: 10595"] Hi Guys,Just wondering if any of you have experienced the problem below with E39 M52 single vanos ride :[1] Got rattling noise coming from engine compartment - identified to be near vanos area and compressor, and this only happen with the followings:- Air-con unit is on- Accelerating [even gently], normally happens when above 1,800 rpm- When let go accelerator, the sound will slowly goes off, or- Switching off air-con will remove it even when stepping on accelerator - Rattle noise does not come on all the time when air-con is on and accelerating [headache in troubleshooting][2] The sound is like putting a stick to a rotating fan [ruled out both fans - fans was suspected and has been changed] [3] Compressor has been suspected but then it works fine at various setting when car is idlingAny of you who got any clue or suggestion on what might be the problem?Cheers and Have A Properous Lunar New Year !! ST [/QUOTE]
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E39 M52 - Ratting Noise when stepping accelerator with air-con on
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