I just rebuilt this 2.9.Everything in it is new.It has stock bore,new heads,valves,springs & polished ports.A mild cam & headers. The problem is,I can not get the thing to idel down much more then 1100 RPM.I've double checked everything,all the sensors are working.There are no vacum leaks,Idon't know what else to check or do.Anyone have any suggestions.

My stock 2.9 always idled around 1100 rpms.