SOURCE: I have a 2005 Jetta 2.5 and it seems like one fan runs to fast
One fan should run when engine is running. Other fan should run when AC is on.
SOURCE: Cooling fans and AC on 2000 Jetta 2.0 litre GLS - not working!
worked on one of these last week as well done the door locks and gearchange.Cant remember but look around the rad area for a reostat pack ,also check the earth on the fans and for a feed as that will give you a clue what could be wrong ,but the fan should come on with the AC so something is amiss .My favourite is to run a feed from the battery and then try pushing it behind the positive ,and then do the same with the earth,Cant live without the AC here in alicante spain ,its still about 28 outside now and its 22.11 ,try it out then get back to me if you cant sort it because i have to go now to pick er indoors up from work
SOURCE: cooling fans in op until engine is shut down
Check out clarks-garage.com he has a complete troubleshooting guide for your cooling system along with a schematic. In short, check the low speed resistor on the firewall. Should be around one ohm.
SOURCE: Why does the fan keep running on 2005 jetta after turning off
You are talking about the thermo electric cooling fan, its operation is independent of the car's electical system. It is switched on and off by the engine temperature. When you park, the engine heat soaks upward to heat the thermostat turning the fan on. It will run until the engine cools down and the thermostat switches it off. Quite normal operation.
SOURCE: Hello to eveyone, My 2001 Vw jetta can't cool
Yes it could be a bad fan relay also it could be a bad thermostat.
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