Ford: OD/ OFF FORD PROBE, foot touch, torque converter

Question
Hello,

I bought a ford probe 93 model, V6 and 24 valve. Before buying i checked it completely...

After 2 days i found out that the OD/Off button is not functioning. I click it and nothing happens. Even if i click it 100 times, nothing happens!

So, my question to you is..
1)How can we get to know if the OD is on or off?
2)Whats the difference when it's on and whats the difference when its off?
3)When the OD button will be off, will it display any sign light saying "OD OFF" ??? Or Will it display a sign light when the "OD" is ON?
4) I've an automatic transmission.. So is my car a 4 speed car or a 5 speed car??? How do i check?


As i think, my OD is on.. because it doesn't display any sign light indicating "OD OFF". So, what do you think is wrong with my OD button?
Does it make any difference in the fuel consumption if the OD is on?

Please answer my questions, i'll be waiting!

Regards,
Ali

Answer
several ways you can test o/d 1 is to remove the switch and test it with a test light it should have 12 volts at the switch and ground, 2) is to ck for codes and see if you have torque converter lock up.or any trans codes 3) drive the car at 60 mph with 1 foot on the gas and then the other foot  touch the brake peddel lightly to were the brake lights come on and see if you can feel the trans shift down if it does the o/d is working.  Good Luck