Transmission Sound [Detailed]
 

Hello, I recently noticed a new sound coming from my engine bay, both from inside and outside of the car. I did some troubleshooting to try and isolate the issue and I will share my results. Before that, the sound is best described as chirping in my opinion, but unsure.

The sound is only apparent when the clutch is not engaged, so if I press down on the clutch the sound goes away, which leads me to believe it is an issue with the transmission/clutch.

The sound is there as soon as the car starts up and continues to be heard throughout each gear/speed/rpm with the same volume and tone.

The sound appears to be intermittent in regards to not hearing during certain start-ups and for the remaining drive.

There was no particular event that happened prior to the sound becoming first noticeable.

I have had a few instances where I tried shifting up a gear, but mistakenly went into neutral and hit the throttle as if I went into the next gear which has caused me to redline. Additionally, when this happens the stick vibrates violently and hard to switch gears.

It is also worth noting that it is sometimes very difficult to put the car into first gear and reverse, also occasionally difficult to switch to other gears when upshifting which is what causes me to accidentally go into neutral.

I will attach some audio clips of the sound from different angles and positions.
https://clyp.it/n2gz3ivn?token=521ef...7d63320ceaa46e
https://clyp.it/4v4icmv5?token=b7f12...1bd1d947205230
https://clyp.it/pr2joadd?token=72312...1eb876a3c3f9e3
https://clyp.it/cmklydz3?token=05ab8...dab3d508de34c1

If anyone can shed some light on the issue in regards to what is wrong and how to fix it, that would be greatly appreciated. I would like to gather as much information as possible before going to the dealership as I am currently under warranty.

Vehicle: 2017 Toyota 86
Miles: 25,000

What you describe may be a ToB going bad on you;however, nothing is discernible form the clips on my end so no comment there. At 25k miles on a 2017 id have to question your clutch technique on this one, if ToB is indeed case. I had a bad ToB sound on engage/disengage and a metal on metal whine on cold start-- replaced with a new ToB (moneyshift's hydro ToB in this case) and no more sounds and its just great feel to drive, highlights the fun.

But this:

"I have had a few instances where I tried shifting up a gear, but mistakenly went into neutral and hit the throttle as if I went into the next gear which has caused me to redline. Additionally, when this happens the stick vibrates violently and hard to switch gears.

It is also worth noting that it is sometimes very difficult to put the car into first gear and reverse, also occasionally difficult to switch to other gears when upshifting which is what causes me to accidentally go into neutral."

THAT I certainly dont know what it may be or if my suggestion for ToB would even be remotely related.

Truth be told it sounds like "a particular event" did indeed happen.