The factory pre-programmed data contained in the memory chip cannot be changed. If you are referring to the computers "learned" set points, as determined by your driving habits (shift points, etc) - you can "re-program" that function by removing the battery cables for a few minutes, and then replacing them. It may take several dozens of miles for the on-board computer to re-learn your driving habits.
The evaporative system needs to reset. How?
The computer (brain) should reset itself to factory defaults. Leave it unhooked for an hour or two.
Most full-service auto parts stores will read and reset your computer for FREE.
Unplug battery for 30 minutes then plug back on that will reset the ecm
The check engine light on a 2002 Ford Focus can be reset by disconnecting the battery for 1 to 2 minutes. This resets the vehicle's computer and clears the light.
disconect the accu battery for 10 minutes.
It's in the rear of the car, usually on the left, behind the upholstery. Red button = reset.
Some times. Go to Auto Zone they will check codes and reset your computer for free...
The 2001 Ford Focus has 16 valves.
how do i change the alternator in my 2001 ford focus?
Disconnect the negative battery wire for about 15 minutes, then re-connect it. If your ABS is in working condition, it will reset.
Where is the coolant temperature sensor on a 2001 ford focus?" Where is the coolant temperature sensor on a 2001 ford focus Where is the coolant temperature sensor on a 2002 ford focus