I have a 2004 Monte Carlo SS supercharged I just changed my coolant plugs because they blew on me . After I changed them my card started turning off an on me or when I was driving my throttle would not respond so I changed my TBC on my car. But now when i start my car she idles to 2000 rpm on her own in P & N an when I put her in drive or reverse she goes without me giving an gas. I also change my air filter an now there is a loud noise come from the intake to the supercharger.