ive just gone frm running 803's 2 putting light blues n a chip 2 run them in....but on first fire up and since then after putting them in when the cars cold its firing up then cutting out...once its warmed up a bit its revving between 500 n 1500 rpm.......once the cars 2 its normal running temp its running fine.....

now when the idle control valves disconnected its not surging like it does when the cars cold n its conected but the revs r that low when its diconected u couldnt run the car.
b4 putting the chip n light blues in it used 2 start up like it had a sensor off....it was over fueling but would sort itsself out....

any idea's what the problem is???? i cant c how putting a chip n differenet injectors in would cause the idle contro valve 2 pak up???

cheeRS

 

The mixture and setup are totally wrong by the sound of things. Get her setup and checked over.