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Overdrive

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Question
The transmission sometimes doesn't want to shift into overdrive .
Hi there. There are several potential reasons why the transmission on your 2002 Town & Country does not shift into overdrive. This could be caused by low transmission fluid, a blockage in the transmission lines, or a transmission sensor. The...
Question
Will a bad wheel bearing cause a transmission not shift into overdrive
If the wheel bearing is mechanically “seized” or so hung up that it is preventing the wheel from turning reasonably smoothly, then yes of course the vehicle might not be able to accelerate enough to reach the shift points. But,...
Question
Q: Cannot shift into overdrive
On the SC300, when the shifter is in the 3-D position if the shifter is to the right, then the over shift function is enabled. Once the engine reaches a combination of speed and load the transmission will automatically shift...
Question
Transmission falling out of high gear
Hi there, thanks for writing in about your 2004 Ford F-150. Check the transmission fluid level. Changing the fluid filter may help temporarily but it sounds like the clutch packs in your transmission may be worn to the point of...
Question
Is it a 4 speed or 5 speed?
Hello. Thanks for writing in about your Mazda Protege5. Your 5th speed is known as overdrive. Manual shift does not use overdrive. This is normal operation.
Question
Is it safe to drive with overdrive on or overdrive off?
Hi, thanks for your question. This is usually dependent on your driving conditions and habits. Overdrive is an extra higher gear in your transmission designed to increase fuel economy and drivability in freeway or long steady drive conditions. This does...
Question
Won't shift out of second gear - 2000 GMC Sierra 2500
Hello. This definitely sounds like an electronic transmission control issue. It could be something as simple as a transmission range selection switch or something as serious as a transmission valve body. You may want to consult with a transmission shop...
Question
What does it mean to have the O/D OFF light on
When the O/D off light is on this means the overdrive gear is turned off and the torque converter will not lock up. This setting will help if you are towing something behind the vehicle. When the light is off...
Question
My car has had trouble down shifting. Usually starts after a few minutes of driving. Codes: P07A4 and P2701
Hi there. On your transmission there is an actuator (solenoid) for the Overdrive clutch. The code is coming as P2701 for the Overdrive clutch actuator (solenoid) not working and is your main cause of the transmission shifting issue. The code...
Question
The Traction Control Light is staying on and it won't go into overdrive
Hello. The computer will keep the vehicle from going into overdrive and turn on the traction light if it detects a problem in the system. This can be caused by a steering sensor or a wheel speed sensor. It may...
Question
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...
Question
The transmission keeps dropping out of overdrive.
Hi there. If the transmission is coming out of overdrive and back into overdrive, either the downshift solenoid has an internal leak or there is an internal issue with the transmission overdrive clutch. Check the downshift solenoid and see if...
Question
Rough transition to overdrive at 55 to 60 mph.
Hi there. There could be a problem with the torque converter clutch staying on while the transmission is shifting into overdrive. This will cause the gear to grab hard and make a sudden jerk. Try manually shifting the transmission and...
Question
why won't my overdrive work
Hi there. The overdrive clutches in the transmission could be slipping causing the transmission not to shift into overdrive. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission.
Question
No overdrive in my car.
Hi there. Check the 3-4 shift solenoid through the harness to the transmission and see if there is a resistance on it. If there is no resistance on the solenoid, then the solenoid is burned up and needs replaced. Also,...
Question
Auto transmission is not going into overdrive.
Hi there. The transmission may have burnt clutches in the overdrive clutch pack. The solenoids for this transmission would not go out without effecting more gears. Check the fluid to the transmission and see if it is dark red or...
Question
Transmission issue, Overdrive light is on 2005 F150 4.6l.
Hello. We will be happy to help you.A flashing overdrive light means that the transmission is going into limp mode. Limp mode is a safe mode where the transmission will try to protect itself by limiting RPMS and acceleration. The...
Question
There is no power and is shaking in overdrive.
The Mass Air Flow sensor (MAF) may be dirty and causing the throttle position sensor to act up. Remove the MAF and clean it with electrical cleaner and then put it back on. Check all the hose clamp connections to...
Question
O/D off sensor lit up on the dashboard.
Hi there. I recommend changing the transmission fluid first to see if there is any contanimates in the oil and filter. If the fluid is dirty then the sensors will not work very good. If the fluid is good and...
Question
Sometimes my car will not shift into overdrive and then sometimes it does, any idea what could be causing this?
This symptom is the TCC (Torque Converter Clutch) is slipping in and out while driving. To check this condition, scan the computer to see whether the TCC action is being commanded by the computer. There could be a problem with...

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