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La Golf MK5 venne introdotta in Europa nell'autunno del 2003, raggiungendo il mercato inglese all'inizio del 2004. In Nord America, la Volkswagen ripropose il nome Rabbit quando introdusse il veicolo nel 2006.

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radiator fan doesnt comes on till I turn ac on

radiator fan doesnt comes on till i turn ac on.

Is there any diffrent sensor for the radiator other then the cooling engine sensor? and where is located

Risposto! View the answer Anch'io ho questo problema

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@fusebox. sounds like a bad thermoswitch. Here is the explanation why it comes on with the AC:"

The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. At higher coolant temperatures, the switch closes to start the cooling fans. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. On vehicles with air conditioning, rising refrigerant pressures will also activate the cooling fans.

Attached documents will show you how to test the switch etc. Fan-and-Thermoswitch.pdf

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so do i need to replace the thermostat or thermostat switch OR they both are one part ?


Out of all that I have read on internet about the problem I am having with this car and the days I have spent working on it I just found this information on my tablet. I wish I could have found it days ago . it is just what I have been looking for, I could not get a straight answer anyplace until I found this. Thank you so much.


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You might have an initial temperature sensor which causes the fan to come on when the temperature begins to rise; that sensor might be defective.

Then when you turn the A/C on, the temperature goes up even higher, which triggers the next sensor.

I would look for an initial, "low temp" sensor that is defective.

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for my peugeot 206, fan comes on only if i turn on A/C otherwise wont, (regardless of what is car temperature )


I have the same problem did you fix it


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herzlich yossi sarà eternamente grato.
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