After cleaning the throttle, the idle speed is always around 1000 rpm.

Solution to unstable idle speed: Plug and unplug idle solenoid valve and throttle sensor, and then initialize. The method is to unplug it, wait a few minutes, plug it in again, turn the key to the first gear, don't ignite it, wait 20 seconds, turn it off, wait 20 seconds, turn it to the first gear, wait 20 seconds, and then turn it off. Wait a while and then strike the fire normally, and it will be ok. Warm the car first, then install it.