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  1. #1
    Join Date
    Apr 2008
    Posts
    2

    Default Cooling fan stays on, in cold start

    Hello, i have this trouble with my 04 XC70, the cooling fan stays on even in a cold start, it starts at full speed about 3 or 5 secs after start the engine.

    I think this could be for:
    1.- Fan control module and ECU problem.
    2.- Faulty wiring.

    There's no error reported on the car computer, what could you advice?

    Is there a way to test the wiring? voltage readings?
    As far i know this fan has 3 speeds, how can I test if the ecu is commanding the fan to stay on at full speed?

    Thanks in advance!

  2. #2
    Join Date
    Jun 2009
    Location
    Hartford, CT
    Posts
    61

    Default

    temp fan switch, or temp sensor witch does the job of the fan switch.

  3. #3
    Join Date
    Jan 2010
    Location
    Sarasota, FL
    Posts
    447

    Default

    Are you talking about radiator fan or cabin cooling fan?
    Last edited by jda2000; 07-14-2010 at 07:59 AM.

  4. #4
    Join Date
    Apr 2008
    Posts
    2

    Default

    Does it relate with the cooling fan attached to the water radiator? This one is the big fan controlled with a bosch unit

  5. #5
    Join Date
    Aug 2010
    Location
    New Brunswick, Canada
    Posts
    62

    Default

    Hi,

    I am wondering how you solved your problem, I got the same issue since yesterday, after a few secs. the engine has been started, the fan begins to spin at full speed.

    Where to start from?

    Alex
    My XC 70

  6. #6
    Join Date
    Aug 2010
    Location
    New Brunswick, Canada
    Posts
    62

    Default

    Quote Originally Posted by Metallo View Post
    Hi,

    I am wondering how you solved your problem, I got the same issue since yesterday, after a few secs. the engine has been started, the fan begins to spin at full speed.

    Where to start from?

    Alex
    Can anybody help?

    Tks
    Alex
    My XC 70

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