R53 screeching noise on cold startup

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   Hello folks,
I have an '05 R53 Cooper S JCW and I just started noticing a screeching noise upon startup (mostly cold startups, but occasionally on warm startups as well). I'm posting a video here that  demos the sound (I could get one with the hood open if needed) -- https://youtu.be/aQ2P9qZuSlM.

Anyone have any thoughts on what might be going on here? Car drives fine otherwise (except for the smell I mentioned in the other thread that didn't go away despite a visit to Zahntech).

Any help appreciated!

beemboy

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beemboy Members Profile Send Private Message Find Members Posts Add to Buddy List MINI Motorer Joined: November/03/14 Location: 98034 Status: Offline Points: 18	Post Options Post Reply Quote beemboy Report Post Thanks(0) Quote Reply Topic: R53 screeching noise on cold startup Posted: February/26/16 at 12:01pm
	Hello folks, I have an '05 R53 Cooper S JCW and I just started noticing a screeching noise upon startup (mostly cold startups, but occasionally on warm startups as well). I'm posting a video here that demos the sound (I could get one with the hood open if needed) -- https://youtu.be/aQ2P9qZuSlM. Anyone have any thoughts on what might be going on here? Car drives fine otherwise (except for the smell I mentioned in the other thread that didn't go away despite a visit to Zahntech). Any help appreciated! beemboy

CORNERS Members Profile Send Private Message Find Members Posts Add to Buddy List PSMINI Expert Advisor PSMINI Member Joined: July/29/10 Location: Bothell, WA Status: Offline Points: 3733	Post Options Post Reply Quote CORNERS Report Post Thanks(0) Quote Reply Posted: February/26/16 at 3:16pm
	I would say probably the belt, if not the belt then the idler pulley or the belt tensioner pulley. But you also mention a smell, which could be a failing crankshaft pulley.
	Kurt/04 R53 Check out My MOD MINI repair videos channel @ YouTube

GregV Members Profile Send Private Message Find Members Posts Add to Buddy List PSMINI Member PSMINI Member Joined: January/19/16 Location: Dupont Status: Offline Points: 23	Post Options Post Reply Quote GregV Report Post Thanks(0) Quote Reply Posted: February/27/16 at 10:09am
	Was the noise coming from the belt area or was the starter dragging? How old is the belt, is the tensioner applying enough pressure or do you have any sort of leak that is leaking onto the belt? If you have help then have them let the tension off of the serp belt and check the pulleys (obviously not the crank pulley) by giving them a spin to see if they are going out. Granted I am at work right now and the speakers on this computer suck but it could also be the starter solenoid is not disengaging the gear quickly like it should.

beemboy Members Profile Send Private Message Find Members Posts Add to Buddy List MINI Motorer Joined: November/03/14 Location: 98034 Status: Offline Points: 18	Post Options Post Reply Quote beemboy Report Post Thanks(0) Quote Reply Posted: February/27/16 at 11:06pm
	Thanks. Folks on the NAM thread seem to think it's the starter as well: http://www.northamericanmotoring.com/forums/r50-r53-hatch-talk-2002-2006/299572-r53-jcw-screeching-noise-on-cold-startup.html#post4180471.

GregV Members Profile Send Private Message Find Members Posts Add to Buddy List PSMINI Member PSMINI Member Joined: January/19/16 Location: Dupont Status: Offline Points: 23	Post Options Post Reply Quote GregV Report Post Thanks(0) Quote Reply Posted: February/28/16 at 5:02am
	Oh good. Well, not really good but it is good that there is some agreement. Keep in mind that when that happens it does wear on the teeth of the flywheel. More so on bigger engines. If that happens on many V8's you need to replace it sooner rather then later as it mangles the teeth more and more. No experience with it on a Mini though so I can't say much for how badly it wears on them.

valvashon Members Profile Send Private Message Find Members Posts Add to Buddy List PSMINI Admin Joined: June/15/07 Location: West Seattle Status: Offline Points: 1170	Post Options Post Reply Quote valvashon Report Post Thanks(0) Quote Reply Posted: February/28/16 at 8:50am
	Could you try roll or push starting it? That would take the starter out of the mix for that time. Val
	...Now mom may drive to the grocery store, But that's not what this car is really for...