Volkswagon POLO 2001 Manual Problem: thermo fan not working. Hi all, I have since ordered and replaced the fan with a another fan and the fan still does not work!! Could it be the fuse? Initial problem was my car heating up and the fan not turning on. when i hit the fan witha hammer the fan woould turn on and then stop after about 3 sec. Need help ASAP Jen

check the fan relay switch it could be defective.make sure all connectors are pluged in secure as well.hope this helps

Have the fault codes read and replace faulty sensors

is it losing water? if not is your fan kicking on? if losing water, place piece of cardboard under veh at night to help pinpoint where water is leaking. if not losing water and fan does'nt come on check fan relay. if loses water and don't see leak over night on cardboard, then water pump is leaking thru weep hole but only after heats up and pressure is on need to replace water pump.

check to ensure coolant temp sender (sometimes there are more than one and in that case one controls the gauge functions and the other works with the fuel system and turns the fans on and off) is in working order, ensure the fans are coming on. ensure the proper amount of coolant is in the system. if all that passes replace thermo stat

I'm not familiar with that model, but the problem could be the temp sensor or relay. The pcm should read the sensor and turn on the relay when the temp exceeds normal. You can proble the relay socket to see if the pcm is trying to turn the relay on. See tips at link below.
Do It Yourself Diagnosis and Repair

It should be clearly labeled in the fuse box with a standard symbol assuming it is standard fit. Keep looking or get a good mechanic involved.

Did you check the oil cooling filter...??? , that's the only thing I'd imagine , otherwise you may have a very small leak on the engine gaskets...

you need the repair manual for your car the manual will properly help you how to fix the problem and you can get the manual from the given link http://toolsnyou.com/

Hi,

To my knowledge, the thermal switch is normally located attached to the radiator. This senses the coolant's temperature inside the radiator and upon reaching a predetermined level switches on the radiator fan. Further, to my understanding, either the A/C or the heater must be engaged for the fan to activate.

As to your other concern, overheating; In my country, most overheating issues on Volkswagen models are resolved by:

• entirely removing the thermostat (not applicable in cold regions);
• wiring the fan to switch on once the engine is running (with or without the A/C or heater being turned on);
• replacing the radiator thermal switch for the fan to a lower temp.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa

so it will run for 3-4 hours till the battery is drained?