This time I think my timing chain guides are gone

[tomloans]

Sounds like a tambourine under the hood combined with a bit of occasional engine flicker where it very minutely lowers in rev and shakes for a second.

https://youtu.be/e1-yXiArHqc
https://youtu.be/-LIoznZmZvc

Sound to me like pulley bearings are gone

[acspecialists]

I would start by pulling the belt and making sure the idle pulleys are good. From what I understand when the guides go its unmistakable.

[tomloans]

This may be redundant as I did not have time to read all the remarks. When your timing chain guides are gone or close to it, usually you will get the P0011 code along with a cold morning start that provides for a momentary scary chain rattling sound that is unmistakable.

[Xproplayer]

Digging this ancient thread up so I don't have to create a new thread. Here's a video I just took today. https://youtu.be/IP9Fquk3YMo