Mercedes w168 1.6 Gasoline: Persistent Issues Post Flowmeter Repair, Idle Speed Fluctuation

Hello everyone
The problem is that the car jerks, stops after warming up, after driving about 10 km, the circus begins, and the idle speed fluctuates and sometimes goes out.
The electrician indicated one blinking flowmeter error on the computer
It turned out that inside one of the leaves (the one on the right) is missing, on the other side, a resistor was soldered on the board as I think it would give the computer a wrong resistance.
So I ordered the Allegro leaves, I soldered the missing one and got rid of the resistor
The problem, however, has not disappeared, the car goes perfectly until it warms up, it is better than before replacing the leaf, but this is not what I want to achieve
tomorrow I am going to the electrician to erase the old error.
I read about the flow meter calibration, but a friend of the electrician said that after disconnecting the battery, the computer goes into adaptive mode and no additional settings are needed, I do not know how much is right in this
I also checked the candles and the coil, unfortunately I have not changed them yet, suggesting the computer, maybe someone has or had a similar problem
mercedes w168 1.6 petrol
I will add that it all started when a multi-roll belt shot me
after replacing the belt and rollers it started jerking and breaking

The flow meter error caught fire after the accessory belt was fired? Was he in before. It does not fit very much. It suggests checking the timing setting very possible, the remains of the old belt got under the timing belt housing and caused it to jump, unless you have a chain, but it's worth checking nevertheless. After disconnecting the flow, do you have any changes to the engine operation?

davhel wrote:

After disconnecting the flow, do you have any changes to the engine operation?

The flow meter is integrated in the engine control unit.

Exactly the flow meter in this model is together with the computer on the timing chain
Yesterday I called the company that regenerates the flows and the guy made me realize that after replacing these glass leaves, calibration is needed, as he called the cost about 200
If it turned out that the leaves had to be replaced, 400 would be required
So after Christmas, I send the flow to a specialist, let me know what happens next, maybe it will be useful to someone
And one more car on the route goes normally, circus usually takes place in the city with frequent reductions and low speeds

One thing that comes to mind is the relatively low price for repairing this flow. The subject of ending flows in W168 is known. However, the low cost of this repair worries me. However, if the repair for this money is solid and fair - I would not think about it, but I would do it quickly because the promotion will end.