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#1
08-17-2010, 08:55 AM
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Passenger Seat Vibrate
What could be causing this? It must be something in the rear of the suv, something suspension related? Bushing? Any ideas? Thanks! 
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#2
08-17-2010, 01:11 PM
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If all the suspension is straight/good, the tires are still round and didn't have excessive road force/happens with both sets of wheels etc. I'd look at things in the driveline like the driveshaft's center support bearing and the axle shafts.
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is 
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#4
08-17-2010, 06:57 PM
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The dealer may cost a little bit more for diagnosis, but if they get it properly diagnosed isn't it worth it?
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is
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#5
08-18-2010, 10:37 AM
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Yes but it is hard to find good help these days, seems like i need to supervise everything they do......
It is even worse this morning on the way to work, the steering wheel will shimmy back and forth if i let go of it, and the whole truck shakes. It is more dominent at 80km/hr and 110km/hr. Does not feel safe at all. I just replaced my steering rack with a reman last week, i wonder if its no good? Do they need to be balanced or anything? Grrr stupid vehicles.
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#6
08-18-2010, 01:01 PM
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The steering rack wouldn't cause that. Are you really sure all the suspension is tight and the wheels are 100% properly balanced?
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is
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#7
08-18-2010, 02:06 PM
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Yup!
I just got back from my indy mech, he toke it for a drive and noticied right away a front driver stuck caliper. The rotor was red/rust compared to the right side which was clean as a whistle. Also the wheel on the FL was a lot hotter than the FR. He says i need to order 2 new rotors for the front, a set of pads, and at least 1 caliper. Quote:
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#8
09-19-2010, 07:29 PM
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So my caliper is no longer seized. I still have a pretty bad passenger seat vibration though around 100km-120km/hr, it just shakes a good 2-3 inches front to back and the suv doesnt ride smooth like it should. I also have a small shake in steering wheel around 80km/h.
I am going to get my wheels checked again from my friend on another hunter9700. Otherwise i am out of ideas!
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#9
09-19-2010, 08:19 PM
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I have a shake at those speeds (not in the seat only wheel) just did the front brakes as well. Wheels balanced 3 times on GSP97BMW .. All looks good also got brake fluid flush and all looks good from caliper. I think it my be my poly front thrust arm bushing... otherwise where both from ontario and both out of ideas too
__________________
2006 BMW X5 (4.4i) N62  MY BMW X5... No matter how I disguise it... it's heritage keeps showing through!
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#10
09-19-2010, 08:43 PM
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I replaced both front thrust arm bushings 2 weeks ago, along with inner/outer tie rods. I have replaced both rear left and right upper control arms, sway bar links, front lower control arms, ball joints, and reman zf steering rack. Also got a 4 wheel alignment done 2 weeks ago.
My suspension feels solid, just the highway vibration that is really bugging me.
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