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Suspension & Braking Forum by BimmerWorld
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Old 08-24-2012, 09:46 AM   #1
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Join Date: Nov 2008
Location: USA - GA
Posts: 2,310
My Ride: '04 330i 6mt ZSP ZPP
Steering wheel shake after FCAB replacement

I thought I would start a thread to document my adventures in replacing original suspension components on a high-mileage car. Earlier this week my brake pad light lit up and I brought my car to a local independent specialist to check it out. I would have checked myself and done the job myself but it's not allowed in my townhome complex. I'm pretty busy outside of work so its also pretty hard to get to a friend's garage to work on my car. Car has 126k miles with original brake and suspension components. Please dont flame! I plan on slowly replacing everything soon.

They said the rear pad sensor had tripped. I had them replace the rear rotors and pads, brake fluid and fuel filter. He recommended replacing FCABs and the rear diff mount. I had him replace the FCABs only.

I can definitely feel a difference with the new FCABs, but now I am getting a moderate shake in the steering wheel between 60-70mph. I had shake before, but not nearly as much as now. The range of steering wheel shake is about 1/2", observed at the outside of the rim. It comes and goes and is hard to diagnose. About all I can say is it seems to happen easiest when I accelerate through 60mph uphill.

I plan on taking it back to the shop to get a diagnosis. I don't know if they screwed something up when they installed the FCABs onto the original CAs, or if the other old suspension components are now being subjected to more of the suspension movement. Hopefully it is something as simple as an out of balance wheel.
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