13 After changing the throttle, the engine will shake every 1500 rpm, just like stalling.

Connect the ECU with the diagnostic computer to resume initialization; Or manually initialize the idle speed, so that all data can be restored to the factory settings.

Manual idle initialization method:

Turn the key of the ignition switch and don't start the engine. After repeatedly pressing the accelerator pedal for 4-5 times every three seconds, the key will turn back to the static state. Let it stand for 5 seconds, repeat the above actions for 3-4 times, and then start the engine. At this time, the engine will shake slightly, and it will be fine after a while. Automobile is a complex product of mechatronics, and it can only work if multiple systems cooperate with each other. No system can work independently, and the interaction between them is limited. Do not change the spark plug. There's something wrong with the car. It's a spark plug. Sometimes there are uncoordinated problems in other places, and the spark plug is the victim. For example, the car is coming well. Why is there a new set of spark plugs here and the camshaft pierces the top cylinder? It seems that these are two unrelated posts. How can you blame them on you? You just don't know how to explain them, because you really only changed the spark plug and did nothing else.