If you are SURE there is no issue with the cables or shift lever...1)remove the cables from the levers on the trans 2)unplug the reverse light switch 3)Take out ONLY the 10mm wrench size bolts that hold the 'tower;' onto the trans and lift it out...DONT DROP ANYTHING INSIDE THE TRANS!!!4)This will let you see the selector mech and the 3 brass shifter forks, you can then check for operation by moving the forks into each gear...if 5th/rev don engage with the tower off its a 'trans out' job...

V6 MTX
'Don't p**s up my back then tell me it's raining!!!"
'Its only nuts & bolts!'
'If I build it,fix it,upgrade it or modify it...MAYBE they will come....!
Haines Motor Sports Inc,
Dealer for 'Quaife America' & 'Autotech Sport Tuning'
SOLE USA Dealer for the American Axle 'AUSSIE BAR'...
Get a Turbo for you Zetec from HMS Inc...by 'The Demon' ...www.DemonDynamics.co.uk
..don't talk about it DO IT !!!