When the engine is cold in the morning and before it reaches 80 Ce degrees temperature everything is fine. After warming up, the car starts to tremble even when stopped. The problem is big from the fourth gear and up when the engine speed is from 2,500 rpm and below. It starts to flicker and tremble (not the car but the engine). As soon as I give it more revs (3,000 and up), everything is fine, this happens in forth, fifth and sixth gear. But if I am in fourth or fifth or sixth gear with 2,500 rpm, and I change to third gear, the car goes perfectly up to the maximum speed. With over 3,000 rpm everything goes well, but if I fall to 2,000 it starts to stagnate again. All coils work just fine and the engine light does not come on. I have no signs of damage to the dashboard.
Your advice is invaluable.

 

you have a misfire. don’t rely on DTCs

 

#1 suspects are the coils!! Seriously.

Also check the fuel trims (parked - see the many threads).