Rear end shudder....

Took the car off roading a few weeks back, and haven't driven it much since. I now have a shudder in the rear whenever the suspension does it's thing. I can feel it at low speeds and high. I've gotten under neath it a few times and while there's some dirt, there appears to be no mud or anythign of the sort that would be hindering anything or throwing off weight. All wheel weights look in place (no signs of any missing). Have also retorqued the wheels to make sure that was correct. Driveline appears clean and clear.

Any suggestions on what to look for? I did get all 4 off the ground in a few spots, maybe it threw off alignment? But this doesn't seem like an alignment issue.

 

Truck has toytec radflo and boss reads, and toytec shackle kit

 

To add more. I don’t feel it in the peddle or steering wheel

 

Drive line would be the first thing I'd consider. I don't know how much you lifted the rear but sometimes a CB drop will fix shudder if it's caused by the lift.

 

Rears up an inch. Have the cb drop. Didn’t do this before I beat on it hard

 

Check to make sure you didn’t install your tires upside down. Sorry I couldn’t resist @dcsleeper408

 

I'd guess then, that the rear axle shifted. An alignment will tell you if it moved or not. Or, if you wanna check yourself, you can clamp a piece of 1x vertically to the front wheel straight down the center line. You can use the 1x to hook your tape measure on and measure back to the center of the rear wheel. Front tires need to be straight of course and it'll work best if you clamp a 1x to both sides so you can go back and forth checking your numbers.
The intention here is only to give you a reference, just a way to check. The axle CAN move an inch or more.

 

You realize I’m giving you both noogies when we all meet in person (although it did just aoccur to me you and I have met)

 

Thanks 831, I’ve got another car that needs alignment this week so I’ll get it checked out

 

So it is noticeable with suspension movement? I would check shocks first after a hard hit if the previous applies. Do you have remote reservoirs with a valve to check nitrogen? If so start there, it is easy to check.

 

yea, only with suspension movement, and yes have remote reservoirs, will give them a check.

 

I wonder if somehow you blew out the valving in your rear shocks. Or maybe the bushings in the shackles are all gummed up. Just a thought.

 

I got under the truck yesterday and checked things from front to back. Shackles looked fine (bushings all looked fine). I did manage to crack my iphone X screen as I was rolling out from under the truck though (FUCKKK)

Here's the plan to knock things out and double check:

1. Alignment
2. Wheel Balance (I really don't think this is it)
3. Get it to a shop to check shocks, etc


In my head i've been thinking it's a blown shock, or possible axle issue (stepped out, or bent)......just hoping it's no kind of frame damage, but seems those are rare occurrences on these things

 

How about trying it caveman style. Get in the back of the truck and start jumping up and down getting the shocks to cycle. Just to see if it’s sticking or something.

 

Sucks about your phone.

 

everything bounces back fine when i get on the tailgate and go caveman on it. I'm tempted to go drive the piss out of it off road and see if it all corrects itself

 

gonna let a pro do it

 

The more I drive around, it feels like the shocks blown (or possibly lost all pressure). Have an appt with a shop that does a lot of toyotas on Friday...we'll see where that goes....

 

I think its time to upgrade. Bypass shocks!!!!

 

Ha, bypass probably not, but the 2.5" externals with reservoir from radflo have my interest

 

that would suck if they need a rebuild already.. they are brand new... Toytec..

 

No residue, but it's got that washboard feel after hitting any type of bump that i've experienced with blown shocks before. I'll ditch them if that's the case, and go with something different (these things are like 2 months old).

We'll see what happens on Friday when i take it in to have it looked at further.

 

dang.. gotta pay to play!!! Do you know what charge the BOSS should be at?