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Heater Only Works On Full Blast!


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#1 carlos84

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Posted 12 August 2011 - 09:35 PM

anyone care to shed some light on my little problemo? the heaters on my 2003 zetec will only work on full blast (setting number 4) nothing else on 1 to 3. help.

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#2 stef123

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Posted 12 August 2011 - 09:38 PM

anyone care to shed some light on my little problemo? the heaters on my 2003 zetec will only work on full blast (setting number 4) nothing else on 1 to 3. help.


If the dial is working then i would suggest that there is a fault with the resistor for the motor.

http://www.fordparts...sistor_1299.htm

#3 johnH

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Posted 12 August 2011 - 11:11 PM

sounds like as stef123 says....resistor pack for the blowers

#4 jocojohn

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Posted 14 August 2011 - 09:19 AM

Yes, you need a new resistor pack. Setting 4 bypasses the resistor pack totally, which is why that setting works. I've had this problem on both my Focuses

#5 blueovalcraig

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Posted 14 August 2011 - 12:49 PM

One quick fix is to remove the resistor and solder a wire onto each end of the little diode.


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