Question about 2002 Volkswagen Jetta TDI

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I have just replaced the radiator in my polo 95 n reg but the fan is not coming on when it is heating what is the problem

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  • Anonymous Mar 31, 2014

    radiator fan working very slow making the car to over heat

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  • 8 Answers

Fuse, fan switch or maybe air lock/

Posted on Jun 19, 2009

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This switch is the primary controller of the operation of the radiator fan(s) used for cooling. When the coolant in the system reaches a pre-determined temperature, the fan switch closes and completes a circuit. The fans will be brought on. Generally, the switch communicates with the fan relay, although the later PGM-FI cars send the signal through one of the many solid-state controllers first. Do not assume that the switch is the only component in the radiator fan circuit which controls its operation. There are many other components whose failure may prevent the radiator fan from operating. If the fans are not working when the engine is very warm, check the fuses first.
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