3rd gen "shudder/Shiver" on cold start, & clicking noise at idle when warm?

21 TRD OR:

Noise 1- When I start the car cold(even when it's not cold out), once the rpms drop a bit I get a shudder/shiver like the car is, well, shivering. It's something I feel. The vibrations literally feel like shivering. This seems to go away once the vehicle is warm, but I've never had anything like that happen. Is this normal?


Noise 2: When it's warm and at idle, there is also a super fast clicking noise coming from the engine compartment. It isn't all the time. Any ideas?

Thanks much!


Pic for attention.

 

Mine does the same shaking when idling, particularly when in gear. Sometimes I drop into neutral if I'm waiting for a long time. Ticking sound is normal for these engines. It sounds like a valve tick, but it has to do with the injector cleaning cycle. I think you're good.

 

Thank you. Glad to hear. All this new tech ‘makes strange sounds. LOL