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why does my fan blower ony blow air when on full?

my heater a/c works ok, but the fan only blows air when on number 4, any one help? mondeo 1.8 lx r, reg
nigel, March 2007
Find the blower motor - attached to it will be a circuit board fitting - sometimes into the same housing as the fan motor - called a fan switch resistor - these fail with moisture. Replace it.

shaunt, March 2007
Easy fix - it is the resistor pack behind the glove box. See here

http://www.mirez.co.uk/HeaterPack.htm

Ray Peate, March 2007
link Click here to see other fixes for Mondeo.