1997 Ford Probe Owner Guide 1st Printing - Page 146
1997 Ford Probe Manual
Page 146 highlights
Once the gearshift is secure in the desired position, release the brake pedal and use the accelerator as necessary. Driving When to use Overdrive (D with Overdrive activated) Overdrive is the usual driving position for an automatic overdrive transaxle. It works the same way Drive (Overdrive OFF) works, automatically upshifting or downshifting as the vehicle speeds or slows. However, Overdrive also shifts into a fourth gear -an overdrive gear - when your vehicle cruises at a consistent speed for any length of time. This fourth gear will increase your fuel economy when you travel at cruising speeds. Cancelling Overdrive Overdrive may not be appropriate for certain terrain. If the transaxle shifts back and forth between third and fourth gears while you are driving on hilly roads, select Drive (Overdrive OFF) by cancelling Overdrive as outlined below. The Overdrive Off (O/D OFF) button is located on the gearshift. The Overdrive Off (O/D OFF) light is located in the instrument cluster. The O/D OFF light is not illuminated during normal vehicle operation. This allows the transaxle to upshift and downshift from 1st through 4th gears. When the O/D OFF button is pressed, Overdrive is cancelled and the O/D OFF light in the instrument cluster illuminates. When the O/D OFF light is illuminated, the transaxle will upshift and downshift from 1st through 3rd gears. 143