What happened to Fiat Palio's belt speed going up and down?

1, unstable idle speed, commonly known as "station wagon", 99% is related to the throttle.

Please match the throttle with a professional car decoder to see if there is any problem with other sensors.

3. By the way, measure it to see if there is any problem with the cylinder pipeline and ignition coil.

Please check the carbon deposit on the intake valve with an endoscope. The disassembly-free cleaning of the intake system is basically ineffective for carbon deposition on the intake valve.

Note: Is the throttle valve removed for cleaning? If yes, please match first.