Hi people i have a vauxhall vectra 2.2 sri 52 plate with the z22se engine i have put a coil pack on it the the engine management light came on saying egr vavle stuck open 5% so changed that now its stalling on me sometimes and the revs go up and down when stopping for lights or round abouts and stuff like that its also stuttering a bit untill you go over about 2000 rpms and holds back a bit when putting your foot down witch i like to do lol can anyone help me please.....

ALSO IN THE REV COUNTER THERE IS A LITTLE DISPLAY WHERE THERE IS AN OIL CAN COMING UP OVER WOT LOOKS LIKE A RIVER BEEN TOLD ITS THE OIL LEVEL INDECATOR ALL THOW THE OIL LEVEL IS FINE ALSO MY COURSE CONTROL IS NOT WORKING