Bouncy from side to side (urgent)

achha64

New member
Hi all,

My runner start to bounce a lot from side to side with pothole or bump. Sometime small.

The front shock is a brand new KYB and the rear is a used Stock land cruiser shock. Can the worn rear shock make the ride that bouncy? Or it's can be a bad sway bar link?

Thank you
 
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Could be weak bushings, low tire pressure, sway bars or bad shocks... If it's the shocks get a friend and try and bounce the rear end. It should settle in 1-2 bounces anything more id replace them.
 
Could be weak bushings, low tire pressure, sway bars or bad shocks... If it's the shocks get a friend and try and bounce the rear end. It should settle in 1-2 bounces anything more id replace them.

Tires pressure is fine. But the bushing is to be considered. The sway bar I'm not sure how to check this one but I know that my sway bar link is in pretty bad conditions and the rear shock was bought from a friends Land cruiser.

The front shock was replaced I think 3 week ago with a brand new KYB. but stock springs still.
 
Can the worn rear shock make the ride that bouncy?

Your question is akin to "can having no rear shocks make the truck bouncy"

When shocks wear out they stop working. I would suggest all new shocks for all 4 corners of the suspension. Since you already replaced the front then just do the rear.
 
My son's truck had a broken sway bar end link on the front. It was horrible (plus the old shocks were gone). Look just behind the front tires and you will see the swaybar. It's a bar of steel thats bent at the ends. There is a vertical piece, the end link, that attaches it to the frame. Compare both sides.

there is a photo of the broken and new end links in this thread.
http://www.toyota-4runner.org/3rd-gen-t4rs/178792-chuckles-98-manual-sr5-4runner.html

And, I'd put new shocks on the rear to match.

Good luck

Stephen
 
OP, can you give more specific info on this.

Is it bouncy in the front or back?
How many miles are on the LC shocks?
When did you install the LC shocks and did they function fine when you installed them?
What coils are you running in the back?

If the rear shocks are shot that would be a source of the bounce in the back. But I can tell you this, I had KYB gas shocks several years ago and I HATED them. They were terrible in my opinion. They did make my truck feel bouncy and just generally terrible in handling. Since you added them recently, Im guessing that they are the main ingredient in the bouncy handling. If that's the case what you are feeling is actually the opposite of bouncy. The shocks are too stiff from my experience, which leads to slow rebounding of the coil. This produces a feeling of a really rough bouncy ride. Not bouncy like your truck is bouncing up and down, but more like youre riding on a wooden roller coaster and the wheels feel like theyre going to vibrate right off the truck. when you hit bumps Is this what youre experiencing?
 

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