[V8] '93 Acceleration Vibration (update)

[Nicholas Miller]

The only time I had that issue was due to broken motor mounts of the same
style.  The tops were pretty much shot.  Figure this in turn put all the
load bearing on the transmission mounts.  How many miles are on that car,
anyway?  93's are pretty uncommon.  Couldn't be anything with the center
support on the driveshaft by chance could it?


On Tue, Sep 3, 2013 at 8:17 PM, Samuel Mrowka <smrowka at gmail.com> wrote:

> Here's my original message (for reference):
>
> "There's a pretty crazy shake throughout the car when accelerating
> (steady speed
> is normal). Got the car up on 4 jack stands, got a buddy to gun the
> throttle
> several times, but the rear-end is totally fine. Put the E-brake on so only
> the front wheels were spinning, and I get the same vibration. Axles and CV
> joints look normal, engine and tranny mounts are fine...what the heck?"
>
> The car in question is a V8 originally belonging to Mr. John Jones, which
> my girlfriend has been driving.
>
> I was about to pull the engine on this car to determine the source of the
> vibration. But, when I removed the subframe, I found both transmission
> mounts were broken on top. I replaced them with some spares, but they've
> since broken again. Somehow, it seems like an otherwise functional
> transmission is perpetually breaking its mounts.
>
> Interestingly, over the Labor Day weekend I helped my girlfriend
> relocate from Syracuse to Seattle. We drove the car 3,000 miles on I-90 and
> the car performed well (despite the transmission vibration and oil
> consumption).
>
> Still a bit stumped. I'm going to take another look this winter when I
> replace the stem seals.
>
> Samuel
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