Yes the VCT will affect drivability. If new is too expensive for you, try a used one and see long it lasts. Could be forever, could be a day.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods