Date: Fri, 05 Jun 1998 20:54:43 GMT
From: brandywinenopsameme.com (Sam)
Subject: 89 900S Front-End Vibration


A few of months ago, my Saab (140K miles) started to demonstrate mild front -end vibration. A recent trip to the tire shop revealed that three tires needed balancing. Balancing helped considerably, and I was almost convinced that nothing else needed work. I say "almost", because it still seemed like things were still not quite as smooth as I thought they should be. Then, while driving up a mountain at about 60 mph, a very significant vibration took place. It was not so bad that I couldn't control the car, but it was such that I was compelled to stop to see if anything obvious was wrong. A visual inspection revealed nothing. I continued on my way, and noticed that the vibration would virtually stop if I took my foot off the gas. At this point, I'm still climbing the mountain. Once over the side and onto the straight and level, things were OK. Here's the mystery. I've been up that same grade since then, and have not been able to reproduce the vibration. I've not experience it at all, period. I've experimented with different speeds, throttle levels, etc.. Nothing. It is hard to believe that that behavior was a one time event. I have not takenthe Saab to the shop for this, as surely they will try and fail to observe the problem I've described, though I know a general front-end check is in order. I mentioned that after balancing, things were good, but perhaps not quite as smooth as they should be. This condition still exists. Ideas? Sam

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