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In simple terms, overdrive is the final/cruising gear. It reduces the power output by lowering the gear ratio. The overdrive mechanism increases fuel efficiency, and saves strain on the transmission and the drive train. When the vehicle is started the overdrive is always on, but it can be turned off by a switch button, which is often located on the shifter. Turning the overdrive off will prevent the vehicle from shifting into the overdrive when traveling at the speed of around 40 MPH. It is recommended that the overdrive is constantly on under normal driving conditions. It should be turned off when, for example, hauling heavy loads or going up a long gradual incline.Overdrive

A transmission in which the highest gear ratio is less than a one-to-one ratio. This means the drive shaft turns faster than the engine crankshaft. The overdrive feature saves fuel and, because the engine runs slower, engine wear and noise are reduced.


Overdrive (on a car ) means the final drive (tailshaft) rotates faster than the engine. On 5- speed transmissions, 4th has a 1:1 ratio and 5th is in overdrive.

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โˆ™ 2014-06-05 15:23:40
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Q: What is overdrive?
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Related questions

In a 92 dodge ram 350 van does a lit overdrive mean that it is in overdrive or that it is not in overdrive?

Light being on means overdrive is inactive

Is drive in fourth gear considered overdrive?

No it is not Overdrive is the top gear that has a higher ration than 1 to 1. So if you have a 4 speed automatic with overdrive, then 4th is not overdrive. Overdrive is beyond 4th.

What does an overdrive relay do in a 1991 740 Volvo?

allows power distribution to the overdrive solenoid for overdrive engagement.

What would cause the overdrive light to flash on a ford expedition?

if you have overdrive in that car it means that your about to go into overdrive

How do you install an overdrive switch?

If the vehicle does not have an overdrive, then realistically, you can not.

2001 ford expedition overdrive light should it be on while driving or off?

Normally the overdrive is allowed , so the overdrive OFF light does not light up When the overdrive is switched off , the overdrive OFF light will light up to let you know that the overdrive has been switched off

How should the overdrive light look when its on lincoln navigator?

Overdrive is the normally allowed position so you don't see the light on If you turn OFF the overdrive , the overdrive off light will light up or if there is a problem the overdrive off light will flash

Do you supposed to leave your overdrive on while driving?

Overdrive is the normal position - if you are in hilly areas and find the transmission keeps shifting back and forth between overdrive and drive , you can use the overdrive cancel switch to shut off the overdrive feature and if you are towing something you also want to shut off the overdrive

How do you get the Ford GT on Mobsters Overdrive?

you have to get to lvl ten on overdrive

How do you get a 1991 Geo prizm into overdrive?

My 1991 Geo Prizm LSI does not have overdrive My 1991 Geo Prizm LSI does not have overdrive

Is the overdrive on when the dashlight is on or off on a 1996 ford windstar?

The overdrive is "ON" when the light is "OFF". Notice the light for the overdrive has a slash through it.

Ford Expedition 1998 overdrive on or off?

Overdrive ON is the normal position But if you are towing something or driving in hilly country where the transmission is constantly shifting from overdrive to drive , then you want to switch the overdrive off

Do you drive 2000 Jeep Cherokee with overdrive on or off?

For everyday use leave overdrive ON. When/if you tow a trailer, turn overdrive OFF.

Can you drive on overdrive any time?

Overdrive is the normally allowed position but it won't shift into overdrive until the speed is fast enough

Is overdrive always in default option?

For cars that have an automatic transmission, overdrive lockout turned 'off' (overdrive will engage), is the default option.

What would cause your overdrive switch to not work on a 1995 Mazda Protege when passing a car and the overdrive switch is off it won't automatically shift down to accelerate?

If the overdrive switch is turned off then the car will not go into overdrive. As it is not in overdrive, then it will not downshift out of overdrive as it normally would. It also will not shift to 3rd gear above a certain factory preset speed. Turn th overdrive on and see if it operates normally.

How does the overdrive button work on a Ford Windstar?

Pressing it will disable the overdrive.

Can you drive long distences with overdrive on?

Overdrive is the normally allowed position

Does a 1989 dodge van have overdrive?

I have a 1989 Dodge has overdrive

What is the duration of Maximum Overdrive?

The duration of Maximum Overdrive is 1.62 hours.

What is overdrive off?

Your vehicle has an overdrive button on the shifter maybe. When you start your vehicle, overdrive is always on. When you tow something, you want the overdrive to be off, otherwise the transmission will run hot and that will lead to bigger problems.

Should overdrive be on in ford Thunderbird?

The overdrive is designed for speeds after 50 mph so your overdrive should not be engaged until you are driving on the highway. The overdrive gear is designed for fuel efficiency and does nothing in town.

On a 1994 Mazda 626 How do get the button on the shifter to switch back over to automatic from overdrive it is stuck in overdrive and when you push the button it won't switch back?

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.

Overdrive light stays on in ford excursion?

overdrive light keeps flashing

Do you have to push the overdrive button on your 1998 Toyota Sienna?

yes i have overdrive button