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  1. #1
    Registered Member One Ring
    Join Date
    Nov 28 2015
    AZ Member #
    365065
    Location
    Puerto RIco

    Problem with radiator fan.

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    So i was driving my car and suddenly i see the temp go up and my ac wont cool , so i pop the hood and my fans where not turn on , so i went back home to see what the problem was , wen i turn on my car the fans with the a/c on wont work , they just run like 1 or 2 times and stop so i left the car in my drive way for about a week so today i got up to fix it , wen i put my key and switch to accessories with the a/c power off the fan suddenly started working i said well that's weird so i turn off the key and the fan stayed on and they wont turn off ... i power up the car and the fans still on but suddenly they start to fail and turn back on and off by itself . so i turn off the car and still got the same problem . I chaked the relay and my ECU box and no water on it no burning marks or nothing like that . Any other suggestions?? thank you

  2. #2
    Active Member One Ring BISHILVR's Avatar
    Join Date
    Jan 22 2015
    AZ Member #
    310864
    Location
    OH

    Bad fan control module likely.

  3. #3
    Registered Member One Ring
    Join Date
    Nov 28 2015
    AZ Member #
    365065
    Location
    Puerto RIco

    ok ill be checking this one out thank you

  4. #4
    Veteran Member Four Rings diagnosticator's Avatar
    Join Date
    Aug 26 2005
    AZ Member #
    7741
    Location
    Seattle, WA

    This symtom is most often caused by water in the ECU Box at the left end of the plenum under the windshield. Remove the ECU box cover and check for water inside the ECU box.
    If there is water inside the ECU box, some of the relays will be submerged, replace any relays that have been submerged under water.

    You must also try and figure out and fix the reason water was able to get into the ECU box.
    Vorsprung durch Technik

  5. #5
    Registered Member One Ring
    Join Date
    Nov 28 2015
    AZ Member #
    365065
    Location
    Puerto RIco

    Yeah no water on the box , clean i checked the relays and everything is in great shape

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