Question about 2002 Volkswagen Golf

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Hi the thermostat in my vw polo 2002 is not working properly and i need to change it but dont know where it is located can u tell me

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Hi.
the thermostat housing is normally found where the top radiator hose connects to the engine. it is normally held on with 3 bolts and the thermostat is inside. do not forget to use a new gasket as well when replacing the thermostat and to top up the coolant with a water and antifreeze mix rather than just water.

Posted on Mar 30, 2011

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Hi i have changed the head gasket on my vw polo and now it is overheating on every journey the fan doesnt seem to come on any ideas what it could be as i have put new temperature sensors and thermostat and...


Hi Marie.

Test if there is voltage to fan motor with engine hot (use a test light or a Voltmeter). If there is 12VDC to fan motor and motor does not turn, then the fan must be replaced. An alternative way to test the fan would be energizing the motor by connecting it to 12VDC. If fan does not run when motor is energized, then the fan is defective.

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Check the fan fuse first. Most VW use a 30 Amp fuse located in the fuse plate. Refer to the car owners manual for fuse location. Depending on the year of your Polo there is a Coolant Fan Control Relay on the main relay panel. If the relay is good it must power the fan when the engine is hot. Before going for the relay check that two of the relay's contacts are getting power. If there is no power to the relay and fuse is good it means that there is a wiring problem.

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Is there a knock sensor on the vw polo 02 plate if so can u tell me where ?


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Vw polo 2002 heat gauge goes rite up and sometimes down to 0


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Location of temp.control sensor on vw polo 2002 1.2


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Aug 30, 2009 | 2002 Volkswagen Jetta TDI

1 Answer

Vw polo keeps overheating and the fan dont come on what could it be


Volkswagen 2002 Polo

I take it you have the radiator full and the drive belts properly tensioned.
Here is the ordered check list;
1) Get the error codes read-out. Many chain auto part stores will loan a meter to get this for free. Call. They may be mis-leading because of other problems, but may still be useful.
2) Check the fuses
3) If the radiator fan is not running while the car is hot you may need to check the thermal switch. This switch will turn on the radiator fan. If the connection to the switch was good, you may need to replace the switch. I believe the switch is in the lower section of the radiator with wires connected to it.
4) Check the thermostat and its housing for damage. Water has to flow through it.

I believe the temperature sensor that you see displayed on the dash is located on the engine near the heater hose. if everything else checks ok you may check this for false readings.

The problem should be corrected for the temperature sensor. The engine can be in hot/cold start mode and Lambda probe would get the wrong info.

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Try moving the fan blades by hand to see if the fan spins freely to see if the problem is frozen bearings in the fan motor. Replace the fan motor if it doesn't turn. If it spins freely disconnect the wires and hook the fan directly to the battery using a jumper. If it runs the problem is most likely the thermostatic switch. If it doesn't the fan motor is bad.

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