Wheel clunking-- am I gonna die? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Wheel clunking-- am I gonna die?
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Posted by Lutfisk [Email] (more from Lutfisk) on Sun, 12 Jan 2003 21:47:56 Share Post by Email
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My 1999 SE HO with 47500 miles just started making a worrying sound tonight, and I was wondering if you could tell me what it may be before I bring it in. Also, I want to know if I should take out a life insurance policy before I hit my brakes again...

Scenario: Deccelerating from about 45 mph, using brakes, downshifting, or simply lifting off the gas, evokes a series of seemingly wheel-speed related clunks: clunk-clunk-clunk-clunk-clunk etc. As the speedometer gets lower (35 or so) the clunks go away. This noise seems to be coming from my front right wheel.

Other possibly related symptoms: My brakes and/or suspension make a single clunk on accelerating from a stop, and another single clunk on decceleration from low (35 mph on down) speed.

Maybe important facts: Tonight is damn cold (23 F). My car sits for up to five days at a time between uses (I walk to work). It has been through many salty snowstorms, though I have washed it since the most recent. I have also done lots of donuts and drifts in snowy parking lots which may place strange stresses on things...

So...

What are the probable causes of this noise?
What do I have to tighten/replace to make it go away?
Are my wheels going to fall off (as a motorcyclist, I'm ok with up to two going at any one time ;) )?

As an aside, when I noticed the clunks, I was testing my newly completed (after 6 quality hours) TBTC modification. Pretty slick! Kudos to Dean et al for figuring this one out, it definitely makes a noticeable difference in smoothness to the acceleration.

Thanks for any thoughts you may have!

Best,

Lutfisk

posted by 24.59.101...

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