Throttle position sensor problem
 

So I first had absolutely no throttle then I replaced my brake light switch and now when I start it up it goes full throttle. I hold the brake to stop this and after about 2-3 mins I can release the brake and it idles fine but still no throttle response I’ve replaced the the rear O2 sensor the TPs and a few other things it possibly could have been and still no luck. Also this is on a 1.8t Any help or ideas would be greatly appreciated.