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Fan Clutch won't turn off

Discussion in 'Trucks [ Eighteen Wheelers ]' started by vadim2200, Mar 11, 2011.

Page 1 of 3
  1. Mar 11, 2011 #1
    vadim2200

    vadim2200 Light Load Member

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    This morning i started my truck, waited about 10-15 min to warm up, and started to drive. I think on my 3 gear the fan turned on and it will not shut down right now.
    1. I tried shutting down the engine and restarting, didn't help
    2. While the engine is running the A/C isn't blowing cold air (the fan is still on)
    3. I checked A/C compressor and its working fine, and the lines are getting cold.
    4. Also the truck is not overheating
    Need help. Can it be defected thermostat, or is it solenoid. I have Cummins ISX 2006
     
    Last edited: Mar 11, 2011
    vadim2200, Mar 11, 2011
    vadim2200, Mar 11, 2011
    #1
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  3. Mar 11, 2011 #2
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    What truck, year, engine?
     
    Pablo-UA, Mar 11, 2011
    Pablo-UA, Mar 11, 2011
    #2
  4. Mar 11, 2011 #3
    vadim2200

    vadim2200 Light Load Member

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    2006 Kenworth T2000, Cummins isx 400st
     
    vadim2200, Mar 11, 2011
    vadim2200, Mar 11, 2011
    #3
  5. Mar 11, 2011 #4
    Pablo-UA

    Pablo-UA Road Train Member

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    what temperature reads instrumental cluster?
     
    Pablo-UA, Mar 11, 2011
    Pablo-UA, Mar 11, 2011
    #4
  7. Mar 11, 2011 #5
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    jusy hypotesa... to check I use Insite software. Sometomes becouse of bad wiring ECM "thinks" A/C is on.

    What about air pressure? Failure of four way valve causes the same, no air pressure on fan solenoid valve
     
    Pablo-UA, Mar 11, 2011
    Pablo-UA, Mar 11, 2011
    #5
  8. Mar 11, 2011 #6
    vadim2200

    vadim2200 Light Load Member

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    Nov 21, 2010
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    Temp cluster reads 150-170, the air pressure is normal, i checked fittings on air line near fan clutch to see if i am loosing air but all fine
     
    vadim2200, Mar 11, 2011
    vadim2200, Mar 11, 2011
    #6
  9. Mar 11, 2011 #7
    Hardlyevr

    Hardlyevr Road Train Member

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    defroster on?
     
    Hardlyevr, Mar 11, 2011
    Hardlyevr, Mar 11, 2011
    #7
  10. Mar 11, 2011 #8
    vadim2200

    vadim2200 Light Load Member

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    no defroster is off
     
    vadim2200, Mar 11, 2011
    vadim2200, Mar 11, 2011
    #8
  11. Mar 11, 2011 #9
    zx12guy

    zx12guy Bobtail Member

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    Jun 13, 2007
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    I have had it happen due to a broken wire goin to the ac/heat blower.
     
    zx12guy, Mar 11, 2011
    zx12guy, Mar 11, 2011
    #9
  12. Mar 11, 2011 #10
    Dna Mach

    Dna Mach Road Train Member

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    I've had this happen many times on Freightliners and Peterbilts. Your losing major HP when that thing is running and when the temperature dips to 25 or below outside you will no longer have heat. BUT the good news it's a simple quick fix.
     
    Dna Mach, Mar 11, 2011
    Dna Mach, Mar 11, 2011
    #10
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