[WOBBLE]: Rear "dances" on upshift.
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Team Owner
Joined: Mar 2000
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From: Boston, MA
[WOBBLE]: Rear "dances" on upshift.
Man, this isn't my week is it. :)
What would cause the rear end to "dance" when upshifting gears. Now I'm talking about the 4+3 tranny, so pretend I mean the A4. When auto-shifting from 4-4/OD (like an automatic) the rear end sorta feels like the back left dips, comes back up, and torque steers ever so slightly.
I'm thinking the torque beam bolts came loose? Maybe? I leave in about 45 minutes for a 4 or 5 hour drive down to NJ. :D
What would cause the rear end to "dance" when upshifting gears. Now I'm talking about the 4+3 tranny, so pretend I mean the A4. When auto-shifting from 4-4/OD (like an automatic) the rear end sorta feels like the back left dips, comes back up, and torque steers ever so slightly.
I'm thinking the torque beam bolts came loose? Maybe? I leave in about 45 minutes for a 4 or 5 hour drive down to NJ. :D
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From: SE NY
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Re: [WOBBLE]: Rear "dances" on upshift. (scorp508)
It's too obvious, but have you checked inflation and shock bolt tightness? When I got my Vette one of the front shocks was a little loose.
I would think such a problem would be more severe on the lower gear upshifts due to higher torque, especially if a torque beam problem.
Anyway maybe I'll pass you on the Garden State, I'm leaving about 4pm.:cheers:
I would think such a problem would be more severe on the lower gear upshifts due to higher torque, especially if a torque beam problem.
Anyway maybe I'll pass you on the Garden State, I'm leaving about 4pm.:cheers:
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Joined: Aug 2000
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From: San Pedro CA
Re: [WOBBLE]: Rear "dances" on upshift. (scorp508)
considering I am coming from the south... I won't be passing anyone here!!!
ok... a long time ago, someone mentioned the rear end has some kinda thingy that aligns the rear end... and they wear out... I think it is effecting mine. I am planning, upon the start of a new job, rebuilding the rear suspension...
lock, stock and barrel...
ok... a long time ago, someone mentioned the rear end has some kinda thingy that aligns the rear end... and they wear out... I think it is effecting mine. I am planning, upon the start of a new job, rebuilding the rear suspension...
lock, stock and barrel...
Thread Starter
Team Owner
Joined: Mar 2000
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From: Boston, MA
No leftovers thankfully. :) Perhaps I did not torque down one of the camber bolts enough?
It is now noticeable when I just let off and get on the gas at all. The fast I am going, the more pronounced it is. The sensation it makes is like the right tire gets the power first, kind of leaving the left end behind, then it catches up. So she sorta "squirms" momentarily.
It is now noticeable when I just let off and get on the gas at all. The fast I am going, the more pronounced it is. The sensation it makes is like the right tire gets the power first, kind of leaving the left end behind, then it catches up. So she sorta "squirms" momentarily.
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Thread Starter
Team Owner
Joined: Mar 2000
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From: Boston, MA
Re: (BrianCunningham)
you got it aligned afterwards, right?
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From: San Pedro CA
Re: (scorp508)
you got it aligned afterwards, right?
After ujoints? No. The reason for scribing the camber bolts before loosening them is so that you don't have to get it aligned after.
After ujoints? No. The reason for scribing the camber bolts before loosening them is so that you don't have to get it aligned after.
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From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Re: (scorp508)
the alignment could have been off before it was done.
worn ujoints are like having a "complient suspension"
now that everything is tight you notice.
what was the condition of the bushing when you took the bolts out?
worn ujoints are like having a "complient suspension"
now that everything is tight you notice.
what was the condition of the bushing when you took the bolts out?
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Re: (BrianCunningham)
My 92 LT1 Coupe displayed the same symptoms. The best way to check and determine the cause is listed in the procedure I have written below. Good Luck Scorp. I would bet money that this is your problem.
Checking the Rear-Toe Link on the C4 Corvette
1. Jack up the rear of the car.
2. Leave the wheel bolted in place
3. Position your hands at the 3 o’clock and 9 o’clock position
4. Throw your body weight into the wheel, alternating weight from one side to the other.
5. Observe the tire & wheel to see if it indicates the slightest movement.
6. If it does, the rear toe-link is bad.
NOTE:
If possible, try to have a friend shift the tire while you observe the rear toe-link at the point where it is attached to the rear wheel assembly. Most likely, you will see the adjustable ends on the toe-link flex while observing movement in the rear wheel assembly.
The toe-link is relatively inexpensive and easy to replace. A rear wheel alignment will be necessary once the repairs have been performed.
Purp
Checking the Rear-Toe Link on the C4 Corvette
1. Jack up the rear of the car.
2. Leave the wheel bolted in place
3. Position your hands at the 3 o’clock and 9 o’clock position
4. Throw your body weight into the wheel, alternating weight from one side to the other.
5. Observe the tire & wheel to see if it indicates the slightest movement.
6. If it does, the rear toe-link is bad.
NOTE:
If possible, try to have a friend shift the tire while you observe the rear toe-link at the point where it is attached to the rear wheel assembly. Most likely, you will see the adjustable ends on the toe-link flex while observing movement in the rear wheel assembly.
The toe-link is relatively inexpensive and easy to replace. A rear wheel alignment will be necessary once the repairs have been performed.
Purp