I have a ford focus and fan speed 1 2 and 3 dnt work. Only number 4. Very noisy. Wonderin wots up. Warmer whether cumin up and wanna use ma air con but that doesnt work on fan speed 4. Help plz.

hi your resistor for the heater has blown £15 from ford its screwed into the heater housing behind the glove box 3 screws.you must either change your heater motor or lubricate it with wd40 this worked for me before you change it otherwise it will keep blowing the resistor i take it only no4 works.

Yes mate. Its a bastard. No 4s 2 much blowin. Cheers 4 ya help.