I want to sort this once and for all.

[Goran]

If it was my car I would spend more time diagnosing what could be causing it, rather than taking things apart randomly. You have a throttle actuator fault code, any others?
Starting point would be to examine throttle actuator and try to see the fault, and perhaps try to fix it first. The other faults may be cascading from that single fault and may disappear once its fixed?