Is a common issue. Our shifter cables have springs in the housings which hold them in place on the bracket near the trans. the housing is threaded with two plastic nuts that have constant pressure pushing towards each. The springs cause this pressure. The bracket on the trans has a c style hole and.it sandwhiches between the two nuts. When the spring falls out then the nut backs out on one side. Now the shifter cable housing is moving instead of the cable inside when u shift. Look under the area where ur throttle body and mass air meter is. U should see where the linkage attaches and one should be lose. Usually can tighten it it by hand then use a zip tie to keep it from twisting back off.
2004 FOCUS SVT w/JRSC & FFRP BBK #1709 of 1978
2000 FOCUS ZX3 (project car)
1987 MUSTANG GT 5.0