Pulsing/Beating vibration over 70mph....cant figure it out??
Thread Starter
Senior Member
Joined: Jan 2002
Posts: 888
Likes: 0
From: Oswego, IL
Car: 1989 Iroc-Z
Engine: 350ci SBC
Transmission: 700R4
Pulsing/Beating vibration over 70mph....cant figure it out??
I have this vibration that pulses about1-2 times a second going over 70mph. It shakes the whole car and seems to be comming from the rear. I had the wheels and tires balanced as well as the driveshaft balance checked with no change. I then had a new drive shaft made and they reused the old yoke had new u-joints installed and the whole thing was balanced....the vibration is still there. Any help???
Member
Joined: Apr 2005
Posts: 249
Likes: 0
From: Ann Arbor MI
Car: '88 Trans Am
Engine: 305 TBI
Transmission: 700R4
Sounds like the problem I'm having... check out this post:
https://www.thirdgen.org/techbb2/sho...hreadid=305297
https://www.thirdgen.org/techbb2/sho...hreadid=305297
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