Here's how the overdrive system works:
* Transmission Computer: The computer monitors your driving conditions, including speed, load, and engine temperature.
* Overdrive Engagement: When conditions are suitable, the computer signals the transmission to engage overdrive, which provides a higher gear ratio for better fuel economy.
* Overdrive Disengagement: If the computer senses a need to downshift, it will disengage overdrive to provide more power, such as during acceleration or uphill driving.
You cannot manually engage or disengage overdrive on a 1998 Ford Windstar. If you're experiencing issues with your overdrive, you should consult a mechanic to diagnose and fix the problem.
