Could be either or, but also a switch, not to exclude wiring or connections.
the Blower resistor pack is in the vent along the firewall its a white retangular door 1"X2" with one screw with a star head... your local ford dealer has replacement resistor packs and have been redesigned...It fixed the problem with mine...It only cost $14 I have a 1995 ford explorer console fan is not blowing at all (heat or cold). Checked fuse and its OK. Also checked for power to fan (no power). Could it be this blower resistor or blower relay?
must be too much load going through it and blowing it out, get the wiring checked.
Have you checked to see if your 12V dc relay under the hook is working properly?
First check that the ground and the power for the blower are both good and then scan the computer..............
probably have a sinus infection, get it checked by your doctor
check the blower motor resistor
Have you checked the fuses?
Have your injectors checked or changed, burnng to much fuel
Have your blower motor resistor or blower motor checked out
A malfunction has been detected - get it checked out
Since you're checking the resistor, I would assume you checked the fuse/relay for the blower motor. If not check that. If you have then there would be an open wire between the relay and the resistor.
have you checked the fuse if so then you will need to replace the resistor for the blower hig and low dettings have you checked the fuse do you have 12 volts to blower if so then you will need to replace the resistor for the blower replace the blower motor