Why would a 1996 Mitsubishi Montero stall when you push the accelerator after changing the battery?

Clean the throttlebody and automatic idle controller, which is a black plastic thing directly under the throttle body housing held on by 2 screws, with carb cleaner and a lint free cloth. Start the vehicle and let it idle for a few minutes. When you removed the battery the computer lost its idle memory and you have to clean the throttle body to make it work. Or you can pay an out ragous price for about 15 minutes work Clean the throttlebody and automatic idle controller, which is a black plastic thing directly under the throttle body housing held on by 2 screws, with carb cleaner and a lint free cloth. Start the vehicle and let it idle for a few minutes. When you removed the battery the computer lost its idle memory and you have to clean the throttle body to make it work. Or you can pay an out ragous price for about 15 minutes work