ford mondeo heaters only work on seting 4???? they blow hot and cold fine, but 1 2 and 3 dont work attal, any ideas?

 

I would guess new switch, or take the present one to bits.

 

Check the back of the switch isnt melted and that the heater motor resistor (situated in the passenger foot well just under the dash in the heater box...held in by 2 torx screws with a plug on it) isnt melted on the plug......if it looks ok then just replace the heater resistor.......

 

daz sounds positive, you obviously know ya cars, can you enlighten me further pls? have you done this before on a mondy?? if so how do i get to the rear of the switch etc myself?

also the resistor under passenger dash is it visable from the footwell? just unscrew it pull it down and investigate it?

[Edited by apples24 - 1/26/2003 7:15:46 PM]

 

apples, it used to be a common fault on the Mondeos....99% its going to be the resistor to be honest and the switch will be ok.

If you go under the dash in the N/S foot well and pull down the panel you will see the resistor in the heater box (which is behind the centre console). They used to melt the plug and burn out so you can get a new resistor from Ford and also a loom repair kit which comes with a plug and about 8" of loom which you just cut off the old plug and solder the new plug on. Just make sure you get the wires the right way round as they are not forced to come with the same colour wiring!

The resistors are actually in the flow of air to try and keep them cool...all it does is resists the power to the motor so at full chat you get 12.5 volts, at speed 2 you get rougly 10 volts and at 1 you get 8.5ish.

 

okee dokee ill pop to fords tomorrow, thanx.

 

Spot on, resistor pack.

http://www.fordmondeo.org/images/mhp1.jpg
http://www.fordmondeo.org/images/mhp2.jpg
http://www.fordmondeo.org/images/mhp3.jpg

 

Thats the one!

 

got the parts trade for 11 quid, fitted in under 10 minutes, works fine, mine was seriously burnt out!!!, when i pulled out the black plug it fell to pieces!!!