Originally Posted by xDMrFluffeexD
I'm 110% checking that tomorrow. The car is a 105k miles into its life, god knows it probably needs to be cleaned just for maintenance sake. Dont 100% see how that could be the cause of the issue, BUT I'm willing to try/check anything for my pride and joys health lol. Thank you for your recommendation, I truly appreciate it.
So our cars adjust the throttle plate at idle if it needs too - and when its dirty like that, the plate can get stuck and not open/close in minor adjustments when its supposed to.
This is what i heard when my tuner/shop explained it to me. I probably butcher the explanation. Lol
I did the same thing you did, change and replaced everything. nothing worked. then i cleaned the throttle body plate last and it solved the issue for me.