Question about 2004 BMW 3 Series

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2001 325i problem

I have a 2001 325i that is making a noise that appears to be coming from the rear of the car. It is somewhat of a ticking or tapping noise when the car is rolling whether in neutral or in gear. This noise also increases and decreases with speed. There is no noticable driving problems

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If it's a regular noise that gets faster as the car is rolling faster, then chock the front wheels, jack up the back of the car, spin both rear wheels and see if you get the sound.  You may be able to pin point the location this way.   Sounds like it's somewhere in the drive train and you'll be able to hear it by spinning the wheels or the driveshaft, but if not ... you will have gotten some much needed exercise jackling the car up and down ;~).  

Since you bimmer is rear wheel drive (more of a rarity these days) you have Universal Joints (U Joints)  that connect the drive shaft to the transmission and the differential.  When these go bad (100-150K or when the car is close to 10 yrs old) they will make clicking noises, later clunking noises and finally no noises or horrendous noise when they break ... but they will make noise for 10K miles first.

You might have to crawl under your baby and turn the drive shaft and pull push it at both ends to see if you can find play in the U Joints if you don't hear the noise at one of the wheels.  

If you're clost to 150K, I'm betting on Ujoints or one of those fancy German rubber center driveshaft mounts.


Good Luck
..ajm

Posted on Oct 29, 2008

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