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#1
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E70 3.0si loud whine from engine bay, increases with speed
An alternator was serviced sometime back, could this be the cause? Or is this water pump? Sent from my SM-N960F using Tapatalk |
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#2
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Try replacing the belt tensioner.
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2009 X5 XDrive30 Sport acquired 10/21/16 "Brigette" 2005 530i Sport acquired 5/2014 (wife traded for a milktoast Honda) 1999 528i Sport (306k miles!!) acquired 8/2006 "Prescilla" (sold) 1997 528i acquired 8/2004, "Helga" parted out and gone 1992 735iL acquired 6/2003, "Wanda" sold |
#3
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#4
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OK so belt tensioner and idler pulley. Will see how that works out. Are these the main issues to look at?
The whining increases with engine speeds. The more the speed the louder the whine. Can't stand it beyond 70mph. Sent from my SM-N960F using Tapatalk |
#5
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It could be the pulley/bearing on an accessory... but the most likely culprits are the tensioner pulley and idler pulley. It's good preventative maintenance to replace them every ~100-120k miles anyway and they aren't too costly. At least here in the States they aren't.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#6
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Mine does this intermittently but it's not unbearable. The strange thing is if I stop and restart the noise is gone until the next cold start. I've replaced belts and tensioners at 85K which has reduced the frequency but hasn't completely eliminated.
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#7
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Quote:
Quote:
Sent from my SM-N960F using Tapatalk |
#8
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What are the part numbers for belt tensioner pulley and idler pulley. Sorry my non techie mind has failed to ID them.
VIN is LK91614 Sent from my SM-N960F using Tapatalk |
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