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Old 12-15-2004, 02:53   #1 (permalink)
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xf fan switch troubles

hi everyone. I have a xf with a posessed heater fan switch. If the car is sat in the sun and heats up inside and I turn of the fan switch on on the dash, it will work on 1 2 & 3 for about a minute. Then it stutters and cuts out. If I switch it off and on again its the same, fine for a minute then kaput If I turn it to number 4 it works fine.

On cooler days the fan will work on 123 & 4 till the cows come home.

Has to be temperature related but I have no Idea where to look. I have replaced the switch with a new one, no difference. I have also replaced the relay under the dash, no difference.

Are there any other switched or relays anywhere that could cause this.

Thought of a loose wire but this doesnt explain why it only happens on hot days.

If anyone has had this trouble or has any ideas it would be great.

Many thanks
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Old 12-15-2004, 03:53   #2 (permalink)
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Re: xf fan switch troubles

I'm guessing you have a problem with the fan resistor pack. The resistor pack controls the speed of the fan except for highest speed, hence why yours runs on 4 fine.

I'm not sure where the resistors are located in an XF though.
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Old 12-15-2004, 04:22   #3 (permalink)
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Re: xf fan switch troubles

many thanks for that help. hopefully someone knows where the resistors are located.
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Old 12-16-2004, 16:37   #4 (permalink)
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Re: xf fan switch troubles

could it be a blown fuse? my xd's fan switch shat itself many times over and i've replaced the switch about 4 times (not the prob)...im guessing it might be a fault wire (the heat expands and moves wires), probably not it but worth having a look over with a ciruit tester
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