scotty79

Hello ,i am new on here but have used this site for alot of things on my car. I have a 2000 lexus gs300,,this is for my daughter,,she came home the other day saying the dsc vsc off light was on,,,and car was making a vibration. I took the car to a mechanic to have it put on a computer ,he told me the spark plugs needed changing and wanted to charge 300 bucks,,,i just changed them and guess i took of more than i needed to,to get to them,,,there is a lil switch i took off now the car idles high,,i moved the switch kinda reminds me of a old distributar ,cause now the car dies moved it back the car idles around 2000,,,,i need help ,,is there somthing i need to reset or adjust,,,thanks