04 1.8 the excelle hot car is unstable at idle speed, and the throttle is not easy to add.

According to the problem you described, you can do several tests.

First, dirty throttle leads to unstable idle speed or low idle speed. It is recommended to clean the throttle and then re-match the throttle.

Second, the spark plug ignition head has a large gap or too much carbon deposit, which leads to bad electric jump. It is recommended to replace it.

Third, the nozzle is slightly blocked, and the fuel injection quantity of the four cylinders is uneven. It is recommended to clean the nozzle.

Fourthly, the ignition coil (high voltage package) does not work normally when converting high voltage electricity, so it is recommended to replace it.

I hope my answer can help you. I wish you a happy life. If in doubt, please consult a car master. 4S shop professional technician, 10 minutes to solve.