Hi all, tried rebuilding my roschester on my 1984 z28 h.o , now when the vehicle starts it’ll idle normal til it warms up then it’ll idle at 2-3 k , rarely I can get it to idle down but most of the time it just revs higher , I have already checked to make sure there’s nothing interfering with the throttle blades , and also I have tried checking for vacuum leaks , also I got 2 different codes after I rebuilt the carb, 23 (Mat or iat sensor which I can’t seem to find a replacement ). And 32 (egr , which has been removed for awhile although it’s just now showing the code) could the code 32 have anything to do with it? And also does anyone know where to get that sensor , I can’t seem to find it

sorry for the double post,I didn’t realize my first post was actually posted