My battery keeps dieing. whenever the car is on and off there is a sound in the motor. It sounds like a fan running but when I open the hood I don't see any of the fans going. Dont know what the problem is.....HELP.....
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That an electrical short. The fan relay or the fan switch sounds like the troublemaker. when the ignition is off, the fan shut down.The relay is an "on & off" switch for the fan.If the relay is "sticking" in the on position, the fan will continue to run until the battery dies. Same scenario if your Polo is equipped w/ a fan switch. If the switch is stuck on, the fan runs. There's the short. get someone u trust to ck that out. Good Luck, happens all the time.
Assuming the Pilot radiator fan is supposed to run with the ignition off, the relay theory sounds plausible. I'd pull the fuse to make sure and if the fan always comes on with the fuse in, I'd replace the relay.
If your battery is original and more than a couple years old, I'd just replace it also.
Sounds like a supply problem ,the connections in the fuse board or the supply from the battery are corroded causing a high resistance and when the fan is turned on this causes a power drop thats allowing the fuel shut off or stop valve from staying open causing the engine to stop as its a diesel .Us old fleet vehicle fitters never die we just answer questions on here because the back breaking hard work of keeping the drivers on the road kills us off