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Cooling fan running all the time

Discussion in 'International Forum' started by njwoods, Sep 8, 2013.

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  1. Sep 8, 2013 #1
    njwoods

    njwoods Bobtail Member

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    Have an '05 Cat C13 in a 2006 Intl 9200. We've changed the entire a/c system due to multiple parts failures. Two days later, the cooling fan stays on all the time. Fan hub is 3 months old, so they changed the fan solenoid. Good for 2 hours. ANy thoughts?

    I'm thinking maybe the relay behind the fan solenoid. Other than that - insane ecm?

    13 speed eaton, avg 40k loads, 65mph @ 1425rpm, 6.2mpg avg with fan on constantly, running @ 180 degrees
     
    njwoods, Sep 8, 2013
    njwoods, Sep 8, 2013
    #1
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  3. Sep 8, 2013 #2
    baha

    baha Road Train Member

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    did it stop after the changed solenoid 4 a time
     
    baha, Sep 8, 2013
    baha, Sep 8, 2013
    #2
  4. Sep 8, 2013 #3
    Roadrealtor

    Roadrealtor Road Train Member

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    Had a Pro Star that did that. Pulled into rest area, turned off the motor to reset the computer, fixed. Happened very very randomly. By your description, doesn't sound like my fix will work.
     
    Roadrealtor, Sep 8, 2013
    Roadrealtor, Sep 8, 2013
    #3
  5. Sep 8, 2013 #4
    njwoods

    njwoods Bobtail Member

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    stopped for 2 hours, been on since (10 days)
     
    njwoods, Sep 8, 2013
    njwoods, Sep 8, 2013
    #4
  7. Sep 8, 2013 #5
    njwoods

    njwoods Bobtail Member

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    motors been off for long stretches (prefer to sleep in quiet), so i guess no reset - also, no fault codes
     
    njwoods, Sep 8, 2013
    njwoods, Sep 8, 2013
    #5
  8. Sep 8, 2013 #6
    G/MAN

    G/MAN Road Train Member

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    Have you checked to see if you fan is set to "on" or "auto?" Not trying to be smart, but I have bumped my fan switch with my knee while entering or exiting my truck and was not aware that I bumped it. If the switch is set to "on" it will run all the time.
     
    G/MAN, Sep 8, 2013
    G/MAN, Sep 8, 2013
    #6
  9. Sep 8, 2013 #7
    njwoods

    njwoods Bobtail Member

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    one of the first things i thought of checking. my fan override lives in the top row hidden by the radio & the sirius radio
     
    njwoods, Sep 8, 2013
    njwoods, Sep 8, 2013
    #7
  10. Sep 8, 2013 #8
    baha

    baha Road Train Member

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    ck. 4 bad con. at plug near firewall unplug look inside. key on should nave power
     
    baha, Sep 8, 2013
    baha, Sep 8, 2013
    #8
  11. Sep 8, 2013 #9
    Heavyd

    Heavyd Road Train Member

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    If you jump 12 volts to the fan solenoid, and/or, put shop air the fan clutch, does the fan physically disengage? If you have a faulty a/c high pressure signal going to the ECM the fan will turn on seconds after start up, but there should be a brief time period after start up the fan is disengaged before this.
     
    Heavyd, Sep 8, 2013
    Heavyd, Sep 8, 2013
    #9
  12. Sep 8, 2013 #10
    njwoods

    njwoods Bobtail Member

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    connections around solenoid clean and live
     
    njwoods, Sep 8, 2013
    njwoods, Sep 8, 2013
    #10
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