diamonddean

Hello, just replaced the rear bushings in my 1995, with poly bushings, leaf spring, upper and lower control arm ,spindle rod and sway bar. Now car hops when you hit the smallest bump, even make you come off the seat,

what did I do wrong..Thankyou

Kevova

Poly is more reactive worn rubber does colapse. Is there noise? Worn shocks possibly.

diamonddean

Shocks are new, some noise like clicking.

ghoastrider1

thanks for the heads up. I am about to replace those bushing with poly units. Will keep an eye on this post.

Kevova

Did you use a torque wrench to tighten all the nuts and bolts?

drcook

If you jack up the back end of the car, does the rear suspension appear to bind ? Poly bushings can bind a Corvette rear suspension.

diamonddean

Yes bolts were torqued per GM Service Manual. I will have to jack it up tomorrow, if I stand behind it and push down it just rocks up and down .

Kevova

Did you reuse old spring bolt and tighten castle nuts just enough to install cotter pins. If so and nothing loose. It's probably the way it's going to be.

confab

Did you torque them with the suspension loaded?

Because, to my knowledge, you probably should..

confab

PS: Also, are your new shocks any good?

grandspt

I know this sounds stupid but if you completely removed the stabilizer bar like I did doing that job is it possible you reinstalled it upside down?
I did and my first drive around the block made me think what did I do wrong. Sure enough stabilizer bar was installed upside down.
Check it just in case.

diamonddean

Anything is possible, I will check it. Thank you

MatthewMiller

I was going to post this exact same thing. I bet you anything that's what's wrong with the OP's car. With the bar upside down, the bend in the arms contacts the frame of the car and you essentially end up with a solid rear suspension (i.e. no suspension movement at all). Don't ask me how I know...

grandspt

Yes, it was an interesting experience. Felt like an old car without any shocks but ten times harsher.

diamonddean

Well thanks to your help it was an upside down sway bar. Thank you for your help very much appreciated! They should mark the damn thing with an up arrow..LOL

MatthewMiller

Well thanks to you and grandspt for making me feel a little less dumb - I thought I was the only one!

grandspt

I'm glad that was the problem and that MatthewMiller and I could help!

hcbph

Glad you got it fixed. Surprising how useful white paint sticks along with pictures plus masking tape and permanent markers can be on reassembly. Any more the memory isn't as good as it once was. If I don't mark things well it's very possible either I won't remember where something goes or assemble it wrong. They've saved my a lot of embarrassment over the years.