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BMW 3-Series Maintenance and Repair

4446 messages,  Last post on Nov 29, 2009 at 12:04 PM

You are in the BMW 3-Series Forum. Your Hosts are pat & karens

What is this discussion about? BMW 3 Series, Sedan

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#3821 of 4446 Re: Weird noise at startup. [kyfdx] by nbb Mar 19, 2008 (10:58 am)
Replying to: kyfdx (Mar 19, 2008 9:36 am) Doesn't seem to be related to pressing the brakes. Would it rust that fast? Replies to this message: kyfdx (Mar 19, 2008 11:12 am)
#3822 of 4446 Re: Weird noise at startup. [roadburner] by nbb Mar 19, 2008 (11:00 am)
Replying to: roadburner (Mar 19, 2008 10:31 am) If it was tensioner, wouldn't it make the noise all the time?   If it is the tensioner, is there an easy fix for this? Replies to this message: roadburner (Mar 19, 2008 11:47 am)
#3823 of 4446 Re: Weird noise at startup. [nbb] by kyfdx HOST Mar 19, 2008 (11:12 am)
Replying to: nbb (Mar 19, 2008 10:58 am) They definitely get surface rust, overnight...   You said you heard it when you backed up.. My driveway is a little downhill to the street, so my brakes are applied the whole way down..   But, if you hear it on start-up, that probably isn't it..
#3824 of 4446 Re: Weird noise at startup. [nbb] by roadburner Mar 19, 2008 (11:47 am)
Replying to: nbb (Mar 19, 2008 11:00 am) If it was tensioner, wouldn't it make the noise all the time?   Not necessarily, the tensioner is fluid damped and the belt is a rubber composite. Both are stiffer at low temperatures.   If it is the tensioner, is there an easy fix for this?   Yes. Replace it. That said what you or your mechanic should do is remove the belt, let the car sit overnight and start it in the morning. No noise means that you have isolated the cause of the problem.
#3829 of 4446 Posts moved by pat HOST Mar 21, 2008 (12:32 pm)
Here's the link: JingleJill, "BMW 3-Series Tires and Wheels" #142, 21 Mar 2008 10:40 am.
#3830 of 4446 Re: My BMW will not start on occassion [tnguyen74] by widriver2 Mar 28, 2008 (1:23 pm)
Replying to: tnguyen74 (Mar 11, 2008 8:48 pm) It did not start again yesterday and today, but I was able to start it with the other key. So it appears only one key is working. However, when it did not start in February I believe my wife tried the other key and had no luck. So either I flooded it or something and that's why last month the second key did not work; both keys are having problems; or the key issue is something new and different. Or maybe the problem caused my key to short??? Just taking shots in the dark.

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