There is an easy fix kit called the "HeaterTreater" that is
available on eBay and at heatertreater.net. This fix is
all-inclusive, easy to install, does not require removal of the
dash, and only takes about 45 minutes. It cover Ford Rangers from
If you recently purchased this vehicle I would check to make sure
no one has by-passed the heater core. I once had a Nissian that
someone did that on because the heater core had a leak. Didn't know
that till I hooked up. As to the Fan if the Fuse is a Known
good fuse, then check the switch you will need to remove it and
have it tested to see if it is any good. You may also have to
repair the fan, if everything else is "working" I've had to replace
the brushs in a couple before.
If the fan is not running, then it is either a blown fuse,
defective blower motor speed control switch, bad blower motor
resistor pack, or a defective blower motor.