A malfunction has been detected
brake light on dash blinking
Overdrive is the normally allowed position ( it won't shift into overdrive until the speed is fast enough )
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
Only if you want to shut off the overdrive feature , because overdrive is the normally allowed position
Anytime you don't want the transmission to shift into overdrive * if you are towing something , or if you are driving in hilly country where the transmission is constantly shifting between drive and overdrive , you can use the button on the end of the gearshift lever on your 1998 Ford Expedition to shut off the overdrive ( the word OFF will light up on the end of your gearshift lever )
overdrive shut off
If the check engine light is blinking , that means an engine cylinder misfire has been detected . You can drive it in for repair , just avoid any rapid acceleration or deceleration because you can damage the catalytic converter
you have a cylinder misfire
An ignition misfire has been detected
It means you turned it off, usually a little button on the end of the shifter.
If the check engine light is blinking , an engine cylinder misfire has been detected
Check engine light is out