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2008 VNL780 adding manual fan switch

Discussion in 'Volvo Forum' started by KB3MMX, Apr 16, 2015.

Page 8 of 9
  1. Jul 10, 2019 #71
    benrab

    benrab Medium Load Member

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    Quebec ,Canada
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    Are you sure Electric Fan Clutch ??
     
    benrab, Jul 10, 2019
    benrab, Jul 10, 2019
    #71
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  3. Jul 10, 2019 #72
    Smityukh123

    Smityukh123 Bobtail Member

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    Jul 10, 2019
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    I have the same
     

    Attached Files:

    Smityukh123, Jul 10, 2019
    Smityukh123, Jul 10, 2019
    #72
  4. Jul 10, 2019 #73
    benrab

    benrab Medium Load Member

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    Apr 5, 2015
    Quebec ,Canada
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    It’s a viscus fan control by the engine Ecu
     
    benrab, Jul 10, 2019
    benrab, Jul 10, 2019
    #73
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  5. Jul 10, 2019 #74
    benrab

    benrab Medium Load Member

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    Apr 5, 2015
    Quebec ,Canada
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    For now i’m not sure if we can install a manual fan switch with that kind of fan. I will check and come back to you. Do you have the last eight of your serial number ?
     
    benrab, Jul 10, 2019
    benrab, Jul 10, 2019
    #74
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  7. Jul 10, 2019 #75
    Smityukh123

    Smityukh123 Bobtail Member

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    I don’t have the serial number, I can give you the vin
     
    Smityukh123, Jul 10, 2019
    Smityukh123, Jul 10, 2019
    #75
    KB3MMX Thanks this.
  8. Jul 10, 2019 #76
    Smityukh123

    Smityukh123 Bobtail Member

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    GN954063
     
    Smityukh123, Jul 10, 2019
    Smityukh123, Jul 10, 2019
    #76
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  9. Jul 11, 2019 #77
    benrab

    benrab Medium Load Member

    326
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    Apr 5, 2015
    Quebec ,Canada
    0
    I discussed with my technician If you want to try something you will have to install terminal PN 3948725 Volvo. In the cavity PA 19 and 12 volts fused Of the Vecu (big green connector). Also it’s possible you have to turn ON some parameter in Vecu for manual fan engagement. Parked and moving. Base on my own memory with a viscus fan like yours there a delay when you turn it On and also when you turn it Off with the manual fan switch.
     
    benrab, Jul 11, 2019
    benrab, Jul 11, 2019
    #77
    NWAF, Smityukh123 and KB3MMX Thank this.
  10. Jul 11, 2019 #78
    KB3MMX

    KB3MMX Road Train Member

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    Orrstown, PA
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    I have a new truck with the turbo compound engine and this is the only fan clutch they allowed, viscous variable.

    I will also try the previous method and look in the parameters if it needs enabled similar to before.

    If you guys get it working in the meantime please let us know..


    thank you!!
     
    KB3MMX, Jul 11, 2019
    KB3MMX, Jul 11, 2019
    #78
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  11. Jul 11, 2019 #79
    Smityukh123

    Smityukh123 Bobtail Member

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    Jul 10, 2019
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    Ok thank you, I have to change the parameters at the ddealer?
     
    Smityukh123, Jul 11, 2019
    Smityukh123, Jul 11, 2019
    #79
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  12. Jul 11, 2019 #80
    KB3MMX

    KB3MMX Road Train Member

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    Orrstown, PA
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    Yes you just enable and set the default on time. Mine is set to 60 seconds if you just toggle the switch on then off.

    The viscous clutch required confirmation if it's the same method as we used before though
     
    KB3MMX, Jul 11, 2019
    KB3MMX, Jul 11, 2019
    #80
    Smityukh123 Thanks this.
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