little advice or help

[sristeven1]

i have got a 53 plate Vectra 1.8 sri last week it had lambda sensor changed due to it loosing all power and putting up fault code I also changed plug and fuel filter but the revs are all over the place also feels juddery while driving its does not seam to have lost any power any idea what might be causing it would the coil pack cause this problem if that was on way out also its not got a egr valve so cleaning that wont help lol

[troutybrown]

Clean throttle body

[sristeven1]

Clean throttle body

done lol

[troutybrown]

Did you take it off to clean