[Salvatore]

I recently installed new rear Toyota shocks on my 2002 Sienna but my van still bounces too much. Is there a way to know if the problem is the springs or something else?

 

[circus]

I doubt it's springs, bouncing is what they do. I'd look for oil leaking on the new shocks.

 

[Salvatore]

Thanks Circus. Checked them today and no leaks...they are new Toyota shocks. When I push down the rear bumper it comes back up normally, but when I go over bumps the back of the van feels bumpy. I know I need front struts (bouncy feeling as well) but I'm not sure if when I replace them that will help with the rear bouncing. I heard some people install air bags in the rear but I don't know how much that will help

 

[circus]

There are stiffer shocks out there. Don't buy FCS. Good ride but shot after 15,000 miles.
Check if the correct shocks were installed.

What is FCS?

shock absorber brand

 

[q0987]

What is FCS?

 

[Micah202]

Rather than bouncy, I call 'em 'SPONGY',, especially with larger weight on.

On my 80's toyo van, I would double the rear springs and they were perfect for stiffening the ride, turning, even acceleration nicely.

Ive done the same with my sienna, but they're clearly way too stiff until yer've got ~300lb load.

I trimmed the springs down a few inches in their length(not height),, and they're still pretty stiff when empty,, but totally boss for the loads I carry.

Baja tested!