Date: 25 Oct 2000 14:35:20 -0400
From: (Len Moskowitz)
Subject: Re: Road wheel vibrations at highway speeds...

Ben Thompson <> wrote: >I've been trying, by process of elemination essentially, for some time to >cure the poor handling of my '86 Saab 9000 turbo (5 spd). > >The problem that remains, I've determined, is that there's a dignifican >shake, shimmy, or vibration coming from the right front wheel. This only >becomes noticable at speeds over 50 - 55 mph. However, the shake is not >consistent. While maintaining speed over a flat stretch of evenly paved >highway, sometimes it shakes a lot, sometimes a little less; but it always >shakes when traveling over 55 mph. Under 55mph, it's either not present, or >too slight to notice. Putting the clutch in, or applying brakes do not seem >to affect vibration, unless speed falls below 55 mph. Vibration does not >necessarily increase while applying power. > >I've recently replaced with new parts the following : >a) all 4 bushings on both lower control arms in the front suspension >b) all end link bushings on the sway bar >c) both lower ball joints >d) outer CV joint on the passenger side >e) wheel hub & axle nut >f) rotated tires > >This work significantly improved the car's handling, and solved some of the >issues with the car's tendancy to wander down the highway, but the vibration >from the RF wheel has persisted, and is in fact seeming to get worse. > >Could this be an inner driver issue? As I mentioned, applying power does not >cause the shimmy until the car reaches 55 mph. > >Could this be a tire issue? If so, wouldn't I be able to tell the problem >wheel had switched locations after rotating the tires? Could the wheel be bent? -- Len Moskowitz Stealth Microphones (tm), Cables, Interfaces Core Sound Teaneck, New Jersey Tel: 201-801-0812, FAX: 201-801-0912

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