When to use double overdrive in a Ford truck?
When to use double overdrive in a Ford truck?
Double overdrive for when running empty with your truck (no towed load), factory overdrive for in-town 60mph runs, and a .78 overdrive ratio for when towing that will give you more torque multiplication and cooler transmission temperatures (extending the life of your transmission) without any cost to fuel mileage.
What kind of automatic transmission does a Ford truck use?
There are two basic Ford 4-Speed automatics: The light duty AOD/4R70 found mainly in half ton or lower applications, and the heavy duty E40D/4R100 in the heavy 1/2 plus all 3/4 and 1 ton trucks and motorhomes. These transmissions have a low first gear which is good for initial take off but this makes the transmission have very wide ratio changes.
How does overdrive work on an automatic transmission?
It works as an extra gear for your transmission. Overdrive can be referred to as several different features. Some older cars with a manual transmission had a button that electronically controlled the overdrive gear. Older automatic transmissions controlled this automatically but often still had a button to switch off the overdrive.
How to change the AOD transmission in a Ford?
Disconnect the driveshaft, shift, and kickdown linkages. Have a solid means of support beneath the transmission. Remove the dust cover to get at the torque converter and flexplate. Remove the torque converter fasteners with a 5/8-inch socket. Rotate the engine crankshaft to get at hard-to-reach fasteners.
What’s the overdrive ratio on a Ford truck?
Look at the Final Drive Ratios and notice that you will now have 3 different ratios of overdrive. Double overdrive for when running empty with your truck (no towed load), factory overdrive for in-town 60mph runs, and a .78 overdrive ratio for when towing that will give you more torque…
When to turn off overdrive in a Ford Focus?
Only if you are (say) climbing a long hill and the transmission starts changing frequently from overdrive to top gear and back, should you turn off overdrive (to keep it in top). But remember to turn it back on! For many years ford suggested exactly what your told you to do, so follow instructions turn off OD in town, turn in on for highway use.
When to turn off the overdrive in your car?
With a on/off button. My dad said to turn off the overdrive when I’m driving in town and on when on highway. What is it used for and should I keep it turned off? Turn it ON.
