I have a V6 2005 F-150 4.2l XLT regular cab automatic that has the engine light on. It surges if i stay in one spot in drive for too long. Otherwise if it's moving, no surges and runs smoothly. I changed the plugs already. It's definately running lean, guessing a sensor is responsible. Reader is showing these trouble codes of-

PO106
PO171
PO174
P2197
P2198

Im on Oahu in Hawaii. Any suggestions would be greatly appreciated.

 

Vacuum leak. Check all your vacuum lines for cracks and tears.