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displaying posts 1 to 3 of 3
| Author | Subject: Rallye cooling fan wiring |
 willejs
Newbie  Location: Hertford Registered: 01 Jan 1970 Posts: 23 Status: Offline |
Post #1
Can anyone explain how the rallyes cooling fan system works? I have ascertained that it has a relay and a resistor. Mine doesent work properly, and im trying to fault find it. However, i cant figure out exactly how it works to do so. An explanation of how the system works would we excellent. Cheers Will |
 Posted 11th Sep 2011 at 12:02
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bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #2
Thermo switch in the rad ? activates the fans when it gets hot ? Check the sensor switch in the top right of the rad as you look at the car  |
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Posted 11th Sep 2011 at 12:05
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willejs
Newbie Location: Hertford Registered: 01 Jan 1970 Posts: 23 Status: Offline |
Post #3
Yeah, i have already done this. I want to know how the thermo switch triggers the fan.Theres three pins on the thermo switch, which then go to a relay, and to the resistor. Im guessing that the resistor controls the speed, and the relay triggers the fans? However, when i test it, pridging ins 1 + 2 triggers the fan, and bridging 2 + 3 does nothing. Pin three goes to the resistor, and would appear to control the speed of the fan depending on the resistance of the thermo switch? I just want to make sure that the thermo switch is knackered, and understand how the whole system works. |
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Posted 11th Sep 2011 at 14:41
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