v50 1.8 petrol intermittent high revs
 

Hi im new to site and hoping someone can help, i've got a 2005 v50 1.8 petrol on 101k miles, ive had intermittent sticking high revs on start up upto 3000 and between gear changes 1-3, throttle body and sensor replaced for a used one as were told possibly the fault but now throwing up loads of codes and running worse like its not communicating, any help much appreciated.