You should engage the overdrive button on a 1990 Ford F-150 when driving at steady speeds, typically above 45 mph, on highways or flat terrain. Overdrive helps improve fuel efficiency by allowing the engine to run at lower RPMs. It's best to turn off overdrive when towing heavy loads, driving uphill, or in conditions requiring more power, as this can prevent potential strain on the engine and transmission. Always refer to your owner’s manual for specific recommendations.
When u are hauling heavy lOads turn it on and put ur vehicle in2nd gear
check your fuses.there should be in the panel or under hood.
Pressing it will disable the overdrive.
14 mpg
On a 1998 Ford Taurus ; On the column shift the overdrive button is on the end of the gear shift lever On the console shift the overdrive button is on the drivers side of the gear selector lever below the button you have to press to shift out of PARK
yes
the fuse is in the dash behind the overdrive switch
The button is on the side of the shifter normally on the drivers side .
no
I need the routing for the serpentine belt for 1990 Ford 150?
My ford f150 auto. trans studder at around 50mph when in overdrive. why?
in the gas tank