irractic idle,will not drive without irractic idle.6.5 diesel
 

1999 gmc 6.5 diesel 200,000 miles.

I replaced boost sensor and wastegate selenoid.Turbo kicks in when pedal is depressed.Could it be something with the pedal ,there is a electrical attachment.What to do next?Any ideas appreciated.Also the pedal does not accelerate evenly,to be more specific it is very sensitive and races up with the lightist touch.