After cleaning, the throttle will not reset.

Because you cleaned the throttle, the closing angle of the throttle has changed (because there was dirt before, the computer automatically modified the closing angle to match the driving state of the car). When you clean up dirt (sludge mixture), the air intake of the throttle valve at the same angle as the throttle chamber increases (because there is no sludge, the air intake at the same angle increases relatively), so the computer must match it and find the most suitable opening angle!

If you don't need computer matching, you can also remove the throttle intake pipe after parking the car (don't unplug the control line on the throttle at last), clean it with cleaning agent and install it again! Then turn the key to ACC, wait for more than 20 seconds, then throttle to the end, keep it for about 20 seconds, turn off the engine, and wait for 20-30 seconds to get on the bus. Repeat the above twice, the more times, the more reliable! Just!

I hope I can help you! Please confirm my answer if you find it useful! Yours is definitely the biggest motivation for my reply! thank you