Question about 2004 Hyundai Santa Fe

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Radiator& condenser fan motors still not working i replaced temp, sensor ,relays, fuse, ecm, hyundai santa fe 2004

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  • ehinpettrane Jan 02, 2011

    both fans work jumped to battery

  • ehinpettrane Jan 02, 2011

    t stat & water pump are working fine , replaced 2years ago it is a an electrical problem ,repet i have replaced 3 fan relays,40 amp fuseable link & 10 amp fuse good ,ecm just replaced, new temp sensor.

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  • Master
  • 4,044 Answers

If you have power at the fan unit the problem is the fan itself. If you don't have power at the fan unit, that will be a different story and much more difficult problem to diagnose. If that is the case then you have an ungrounded circuit causing it to fail and the problem is in the wiring. The only real way to test it is to disconnect the wires from the fan, start the vehicle and turn the AC on, that will put the fan in a constant on situation, then check the wires for voltage. If there is voltage warm the vehicle up and turn the AC off and retest the wires. If you have voltage in both situations then the fan unit itself is faulty. If you don't in either situation you have a short in the wiring harness. There is a slim possibility the problem could be the ignition switch itself but you need to test this fan power circuits first.

Posted on Jan 03, 2011

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  • Master
  • 1,098 Answers

Hi

Have you tested the fans with a live wire staight to them? as the fans may have burnt out. I have seen this before on other Hyundai's although not yet on a santa fe.

Test the fans first to ensure that they are good.

Get back to me if you have already done this.
Regards
Dan

Posted on Jan 02, 2011

  • 1 more comment 
  • Dan Doherty
    Dan Doherty Jan 02, 2011

    Hi

    There should be some main fuses under the hood / bonnet not small ones these are larger fuses have you checked these?

    Regards

    Dan

  • Dan Doherty
    Dan Doherty Jan 02, 2011

    Also they will be covered with a cap or trim, has the car overheated recently or does it? is the thermostat good?

  • Dan Doherty
    Dan Doherty Jan 02, 2011

    Few more suggestions If the thermostat has been changed then check the rubber seal is in correctly, on these cars it can fit 2 ways and the wrong way will stop it from working at all. very silly but it does happen. lastly they have water pump issues internal fault intermitent pumping. Try these guys they are very helpful > Hyundai Forum they have ahd lots of these issues so might help. Regards Dan

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