Skip the auto shop - Our mechanics make house calls

Q: Advice on using the overdrive switch on a 2001 Ford Mustang

asked by on

I have an O1 Ford Mustang. When I was looking around inside, I found a little bottom on my gearshift. When I pressed it, I saw OD off and a dash. I later learnt that means overdrive. What is the point of this?

A: Your transmission has an automatic overdriv...

Your transmission has an automatic overdrive. When you are going fast on a highway, it shifts into overdrive, which lowers the engine’s RPM so you get better gas mileage. However, if you are towing a lot of weight you don’t need to use the overdrive, so you’ll want to use the switch to turn it off. For example, let’s say you are towing a boat and you are pulling it in and out of the water, you wouldn’t need to use overdrive.

Leave it on for normal drive, but if you are doing any hefty driving, or get stuck in the sand, turn the overdrive off. The switch was made for these types of scenarios.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Starting problems - Cranks but don't start.

Hi there. The fuel pump is working, but the computer is fighting the resistance that the pump is putting out. I recommend replacing the fuel pump with the correct year of the vehicle to ensure that the resistance is the...

Q: Car won't start.

The problem will need to be checked to see if you are loosing ignition or fuel to your engine, since the most common problems are the fuel pump, engine module and distributor going bad on these engines.

Q: Intermittent overdrive

Hey there. This is most likely related to the transmission control module or one of the many different components that feed information to the module which controls many different functions of the transmission. A faulty transmission control module may...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.