You may have forgotten to replace the vac lines on the resonator flaps on the intake. Or, you have the original wiring harness and you bumped something and broke it or cracked it while you were in there. Did you torque the delivery valve nuts properly?

__________________
2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900