4L60E automatic with overdrive.
Over drive is always to reduce engine RPM at Med to high speed cruise thus saving fuel. If this is an Automatic car just ignore the Overdrive and let it work. If this is a manual car use over Drive when maintaining a steady speed and the car will not "Labour" to do so.
It is best to use overdrive at speeds above 55 miles per hour. Overdrive maximizes your fuel mileage at high speeds.
Overdrive is the normally allowed position in a Ford Explorer automatic transmission , once the vehicle speed is fast enough ( my Ford Explorer is 50 MPH ) the automatic transmission will automatically shift into overdrive
Three. Or (with overdrive) four. Plus reverse, of course!
It could have 3 forward gears or 4. Some automatic transmissions have overdrive. Overdrive is another gear that allows for better fuel economy on the open road.
There are several red flags that can indicate overdrive is not working on an automatic vehicle. If a car is shifting in and out of gear or out of overdrive is usually the first signal of a problem. Other signals include low fluid levels and and erratic temperature sensor.
Just drive the car in overdrive at all times unless there is reason to lock it out of over drive.Good Reasons:Slippery conditionsHeavy load or towingLong steep hill where the car is shifting gears many times.
I was told that it is the temp sensor. The car needs to be at 150 degrees. I am working on the same problem.
If your vehicle has an automatic transmission with overdrive, then at speeds above 45 mph, it should be in overdrive, which reduces engine RPM's to save fuel.
The button does not switch from Overdrive to Automatic. The button just turns the overdrive off. Overdrive is not a separate drive system as your question implies. Normally you leave the car in overdrive mode. That way the transmission shifts into overdrive at highway speeds, thus saving fuel. If you are saying the transmission is stuck in overdrive and it will not disengage then seek out a A/T professional.
if it is an automatic leave it in overdrive. the transmission knows when to change into the overdrive gear. if it is a manual listen to the motor. if you have in overdrive and it bogs down while accelerating then down shift to a lower gear.