vibration while accelarating from stop or speeding up?

I have a 97 caravan with 3.0 engine. The car vibrates when I accelarate hard or moderate from a standing stop or when I punch it from and on ramp or uphill. I have changed the shocks, link, cv-joint
on the left side. First it seem like the noise was on the left side but it seem to be coming from SOMEWHERE in the front. I thought it was from the left because I was in the driver seat but when I sat in the pass. seat and my wife drove it seem not to be from the left but instead it seem to come from ALL-OVER the front.
I now suspect the HUD & Bearing, or Harmonic Balancer.
What are the symptoms of a problematic harmonic balancer.
and the symptoms of a bad hud & bearing
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If you power break it with out moving the vehicle does it still do it? (eliminating misfire from drivetrain). Have you rotated tires front to back to eliminate a bad cord in one of the tires? And if it is in the drivetrain take a good look at the right inner cv joint. if that joint is badly rusted up inside the boot or has play in it. it will cause a bad shake under a load and will go away as the load is gone.
Glenn Beasley Chrysler Tech
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I will try power braking it; did not try thay yet! I took a look at the right cv joint and it seemed ok. No shaking or rust, but I will look again. I am about to change all tires on the car so I would see what happens. my wife mainly drives the car so I hardly get a chance to be around it. I do drive my own 96 GC se with a 3.3L. I will try all the above this weekend and post the results. ANYMORE FEEDBACKS ARE WELCOME

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back
joint.
will
The right inner cv joint
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