Rear still bouncing hard on big bumps after replacing shocks, whats wrong ?
 

My car is still thudding/bouncing and big bumps in the road , after replacing my rear shocks/springs today with used tokico hp shocks/eibach springs..

I am not sure what the problem is , I know the shocks are good the car feels very stiff when u push down on it, but when im driving anytime i hit a big bump the back right rear shock is bouncing alot , its very bad .. i replaced the shocks assuming it would fix the problem , but it hasnt gotten any better or worse...

Looking at the suspension down there, everything seems to look fine so what could be causing my car to drive so miserably bad over big bumps ?

I'm 99% sure the shock i put in isnt bad, so i really don't know what to think the problem is :(

Could bad bushings on one side make it do this ? If not what would ... I'm determined to fix my car and make it drive to full potential.

have to check all diff mounts and subframe mounts. the rubber goes bad after time and needs to be replaced. if this is the problem it would be making the noise.

I'm not sure about a noise, but it certainly doesnt hold the ground on the right side in the back...over big bumps the tire will bounce back up...i'll have to drive especially slow over big bumps, or a series of big bumps...it rides horrible and loses all control when it hits the bump(s)

Bad DTSS bushing could be the most likely cause if it is at one wheel only. Or bad subframe bushing.

I already have dtss eliminators, so it can't be that.

It is only the back right though, what else could be the cause...one side of bushings being bad ? I have no clue

Loose bolts... Extremely bad wheel bearing....

The rear springs look very similar when one is held right side up while the other one is held upside down. Are you sure that one spring wasn't installed upside down?

Check the DTSS and other bolts on the hub carrier and subframe - could give similar clunky sounds and undamped movement you describe.

I'll look over everything tommorow, i wasnt the one who installed the springs but the car was doing the same thing on the stock suspension so i'm pretty sure the spring/shock isnt at fault, it has to be something else since passenger side rear just was all over the place on big bumps before and after replacing the shock/spring, it's just strange how it's only one side and not both.

What size are your tires. If your running beefier tires a stiffer suspension can make shit bouncy as hell from the tires sidewalls flexing.

my back tires are actually two different sizes because i had to use another spare rim/tire , so its riding on 15" on the side riding bad , and 16" on the other side.

My original rim actually has a flat tire with a hole in the side.

Was this happening with the original wheels and tires? Because really, unless your overall diameter for that 15" wheel/tire matches that of the 16", you will have problems regardless.

oh it was doing it before too. It started awhile ago, I've had the car for about 21k miles it's up to 167k on the body, so i'm sure it could use some new bushings, it's just strange how one side is going and not both..my left side takes bumps great, the right side is just not absorbing bumps, i have to drive carefully slow on very bumpy roads.

I need your help please!
 

Dear wthdidusay82,


Concerning your post tilted: "Rear still bouncing hard on big bumps after replacing shocks, whats wrong ?"

Am having a very similar problem with my car (passat). Please i like to know how solved your own problem. Thanks[/B]

I don't wanna be perceived as a jerk here, so please take this at face value.

You have 2 different size tires. You have used shocks. You have used springs installed by someone else, so you can't verify quality of the work, or even if they are installed upside down.

You have some aftermarket bushings, dtss installed.

You are pretty sure the shocks are good, you are pretty sure the tire size isn't causing it.

With that information, you want us to suggest things sight unseen that *might* cause your car suspension to react inconsistently to bumps in the road.:scratch:


Ok, now that I have that dealt with here you go!


My suggestion is to clean up the known issues; this might solve everything. So FIRST fix the tires. Verify personally the shock/spring install. It could very well be a bad rear shock. Or a bad shock mount. It could be a sway bar bushing missing.

Check for loose bolts. Kick/shake wiggle a lot of different things ( like the top of the rear tires) to see if they move around. Lay on the ground with the car on a level surface, visually check to see if everything is symmetrical. Put it on a lift. Kick/wiggle shake a lot of things again.

Have it put on an alignment machine. Most franchise shops will give a free alignment check, so they can find something to fix. Let them, then fix it yourself! BTW, they won't waste their time to put it on the machine if your car has different size tires.

Good Luck!

-Jack

you also have a 7 year thread revival for someone asking about a problem with a Volkswagon on a Mazda forum, 2 opposite ends of the world

*giggles and eats popcorn*

Your Ass is too fat...and you dress funny???...

I guess I bit on it too. lol