2nd May 2013, 10:23
I'm afraid you are wrong. The 4 speed auto is an overdrive transmission (i.e. 4th is overdrive, so it's really a 3 speed with overdrive). With regard to the ECON > POWER switch, all that does is change the shift patterns so that ECON is not as eager to change down and it will stay in 4th longer. POWER merely changes the shift patterns for more aggressive or frequent changes.
27th May 2011, 00:13
The 4-speed in Falcons/Fairlanes IS an overdrive! 3rd gear has a ratio of 1.00:1, 4th gear (overdrive) has a ratio of 0.68:1. All the power/economy switch does is change the speed (road) at which the auto changes up or down.
Having just recently purchased a '97 NL Fairlane Ghia, so far I am very happy with it. The SLS (Self Leveling Suspension) has already been disconnected. It has a minor weep from the coolant bottle as well, but this can be bought from the local FORD wreckers for $45 s/h or $85 new (sensor not included).
My only 'problem' ATM is a drive-line knock on coast or light throttle, which I am trying to track down.