Ticking at Idle/low rpms in my 3rd gen

I have a ticking in the rear end of my rig... anyone know what it could be? It happens when at a higher rpm idle (around 1k). I shook the exhaust and no sound. I wouldn’t think it would be the driveline or axle because it happens in park as well. I also pulled the trim to look at the body mounts and everything. I recently did a tundra brake swap/flushed the system and got the rear shoes adjusted. Bigger wheels/tires followed because stock ones don’t fit after swap. I’m trying to upload a video but it won’t work :/ thanks in advance for the help!

 

Doesn’t start happening until after driving for around 10 minutes

 

The catalytic converter in my third gen had started to internally fall apart. It would rattle/tick once warmed up. I cut it open got all the gunk out of it and welded it back up. No rattles since. It would never make noise if you physically shook it, but once it warmed up it rattled pretty good. Might be worth checking. Hard to tell without hearing the noise tho.

 

I just pulled my spare tire out and found out it was my charcoal canister. Thanks for the advice though!

 

No problem glad you figured it out.

 

Any pics?