Date: Wed, 25 Feb 1998 22:56:07 -0600 From: "D. St. James" <saintJnopsamPC.COM> Subject: Re: Wheel shudder in Saab 9000
Hi Paschel, I seem to be having the same thing. I have a '90 9000CD with 77,000 miles. I think my rear tires are wearing badly, but have not checked them out. I think I see some cupping on the edges. However, it does seem to be worse sometimes after I have turned a corner - a thumping sound and feeling that gradually tapers off to a mild thumping. It's very annoying at 65 MPH. I know you said your tires are new, so I guess I will pay attention to any answers from the newsgroup. Diane Paschal McEnroe wrote: > Hi > > I wonder if anyone can help me with a problem of wheel shudder. > > I have a 1988 Saab 9000 Turbo Automatic. It has approx 127k miles on the > clock and I’ve owned it for the past two and a half years. > > The problem is as follows: > > When accelerating in a straight line (normal driving) a shudder can be > felt throughout the car. This becomes worse if I am turning right, for > instance pulling away from traffic lights and turning right at a > junction. > > When driving at normal speeds a slight vibration can be felt which seems > to be part of the same problem. > > It seems to be worst when the LHS is loaded, either in cornering or when > carrying passengers in the car. The frequency of the shudder feels to be > higher than wheel frequency. > > I suspect the LH front wheel bearing, however, I’ve jacked the car up > and checked the wheel bearing for play and roughness. I cannot detect > any play or roughness. Running the engine and wheels does not indicate > any roughness or noise from the wheel bearing. > > The tyres are relatively new and I’ve tried switching wheels to no > effect. Wheel balance is fine. The suspension bushes appear to be fine ( > I replaced the front wishbone bush some time ago as it looked well > beaten). > > Before spending money on a wheel bearing/hub kit (£150 from Mr Saab for > the kit alone) I’d like to confirm that the wheel bearing is the > problem. > > Are there any other circumstances which may give rise to this problem; > CV joint, bushes, anything else? > > Thanks in advance > > Paschal McEnroe
 |
 |
 |
 |
 |
