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#1
12-16-2013, 09:05 PM
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Whining Noise
I know its the tensioner pulley or idler pulley or both but I'm going to change both anyways. Here is my question. Should I change the alternator while I'm changing the tensioner and idler pulley? It seems to be doing its job and haven't had a problem with the battery but I'm pretty sure its the original one and there is always the possibility that the bearing on the alternator are going as well. I don't want to leave it and then have to go back and replace it later  but at the same time I don't want to pay for a new one lol. So the question is should I leave it or change it while I'm doing the other stuff ? Also has anyone gotten a reman. alt off eBay and if so are they any good ?
__________________
2011 BMW X5 35d Deep Sea Blue Metallic w/ 3rd row Custom Kicker Audio System Style 259's on Dunlop Sport Maxx Run Flat Tune and Exhaust Coming Soon.... 05' Ram SLT 2500 5.9l Cummins (Gone But Not Forgotten) 2008 BMW X5 3.0si Alpine White III (Sold) 2002 BMW X5 3.0 TitanSilber Metallic Last edited by BMWX5CHI; 12-16-2013 at 09:54 PM. 
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#2
12-16-2013, 09:31 PM
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My E46 had a whining noise sometimes, divorced my first wife and it went away!
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'03 X5 4.4 Sport, last of the M62s (8-03 build date) I believe in deadication to craftmanship in a world of mediocrity!
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#3
12-16-2013, 10:53 PM
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Good one.
__________________
2011 BMW X5 35d Deep Sea Blue Metallic w/ 3rd row Custom Kicker Audio System Style 259's on Dunlop Sport Maxx Run Flat Tune and Exhaust Coming Soon.... 05' Ram SLT 2500 5.9l Cummins (Gone But Not Forgotten) 2008 BMW X5 3.0si Alpine White III (Sold) 2002 BMW X5 3.0 TitanSilber Metallic
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#4
12-17-2013, 12:35 AM
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Quote:
OP: Just do the tensioner and idler pulleys. Change the Alternator when it fails. Little known tip, make sure you put the belt on the same way it came off. Don't reverse the rotation. They don't like that (for some magical reason).
__________________
Kirk Las Vegas 2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo 2011 E90M3, 6-speed manual
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#5
12-17-2013, 01:12 AM
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If the alternator is doing it's job there is no need to change it. I would swap the tensioner and idler pulley and if the noise remains, replace the alternator.
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Current Bimmer 2004 X5 4.4i Sterling Grey Sport/Premium Past Bimmers 1991 318I Alpine White 1995 740I Alpine White 1991 525I Schwartz 1998 323IS Scwartz 2004 330CI Cabrio Titanium Silver Metallic 1995 540I Schwartz 2000 Z4 3.0 Titanium Silver 2000 330ci Coupe Titanium Silver
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#6
12-17-2013, 06:48 PM
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If there is a problem with the alternator you should be able to spin it manually and hear if there is. Same with everything that runs off the belts. I wouldn't replace the alternator unless I knew it was failing.
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 X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interiorDallas
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#7
12-17-2013, 08:45 PM
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Is the power steering topped off?
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2006 X5 Sport 4.4i
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#8
12-17-2013, 09:18 PM
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Power steering is topped off. The noise first started when I washed my engine. I'm 99.9% sure it's the pulleys. Could be the alternator but I would have to manually spin it to confirm as bcredliner suggested.
__________________
2011 BMW X5 35d Deep Sea Blue Metallic w/ 3rd row Custom Kicker Audio System Style 259's on Dunlop Sport Maxx Run Flat Tune and Exhaust Coming Soon.... 05' Ram SLT 2500 5.9l Cummins (Gone But Not Forgotten) 2008 BMW X5 3.0si Alpine White III (Sold) 2002 BMW X5 3.0 TitanSilber Metallic
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#9
12-18-2013, 12:55 AM
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Quote:
__________________
Kirk Las Vegas 2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo 2011 E90M3, 6-speed manual
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#10
12-18-2013, 11:17 AM
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Quote:
__________________
2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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