Help me analyze it! My Pu Sang is in 2008! Rookie! Usually the vehicles are excellent! I changed a battery last week. Why is the idle speed unstable! 50 points!

08 Pu Sang adopts electronic throttle control technology, and the reason of engine idling instability is that the throttle intake is small. Because when you replace the battery, after the whole car is cut off, the memory power supply of the engine computer will be gone, and the "self-learning memory content" in the computer will be cleared. After reconnecting the battery, the engine computer has no memory of self-learning and correction. When idling, the throttle opening is controlled according to the standards of new cars, which can not reach the throttle opening, and the small intake air leads to unstable engine idling.

The solution is: 1 Clean the throttle with cleaning agent. 2. After cleaning, re-match the throttle with a diagnostic instrument. You can get back to normal. If the idle speed is high after matching, it can return to normal after a period of road test. I hope I can help you!