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
[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 idling
[4] Run diagnostic and found Vanos to be at "Retard" when idle, and even when accelerator is step on to 2,500 rpm - Wondering if this is normal :juggle: ?
Any of you who got any clue or suggestion on what might be the problem?
Cheers and Have A Properous Lunar New Year !!
ST
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
[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 idling
[4] Run diagnostic and found Vanos to be at "Retard" when idle, and even when accelerator is step on to 2,500 rpm - Wondering if this is normal :juggle: ?
Any of you who got any clue or suggestion on what might be the problem?
Cheers and Have A Properous Lunar New Year !!
ST