Lately, my car has been idling very high. Usually it would be at around 800rpm and now it's above 1000rpm sometimes close to 2000rpm. I checked the car today and noticed that the little metal piece never hits the bolt after I give it gas. It stays up and that's why it idles high (pic 1). I push the metal piece down and it idles normal again (pic 2), but once I give it gas, it won't go all the way down anymore and idles high. Does anyone know how I can fix the problem? Oh yeah, I also noticed that some parts seemed to be broken/cracked. Are they suppose to be like this? Any info is appreciated. Thanks.