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07 780 volvo over heating shutting engine down

Discussion in 'Volvo Forum' started by melinda824, Mar 30, 2014.

  1. Mar 30, 2014 #1
    melinda824

    melinda824 Bobtail Member

    16
    0
    Mar 11, 2014
    0
    Just replaced fuel pump, boost sensor, position sensor, and fuel pressure sensor now half the time the fan won't cut on engine over heats and shuts engine down, suspect temperature sensor, but where do I find it. Truck has drained us money wise and can't go to a shop right now. Have a loss of power to. Any suggestions.
     
    melinda824, Mar 30, 2014
    melinda824, Mar 30, 2014
    #1
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  3. Mar 30, 2014 #2
    marek4792

    marek4792 Light Load Member

    62
    31
    Mar 21, 2011
    Chicago, IL
    0
    What engine do you have? Does the fan engage on and off when a/c is on? On cummins isx water temp sensor should be on top of the thermostat housing where your top coolant hose runs to from radiator. Also would look at the thermostat and waterpump as well.
     
    marek4792, Mar 30, 2014
    marek4792, Mar 30, 2014
    #2
  4. Mar 30, 2014 #3
    masoquality

    masoquality Bobtail Member

    6
    1
    Aug 26, 2013
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    my oil sensor was run my truck hot and will shut the engine down. pay about $100 to fix
     
    masoquality, Mar 30, 2014
    masoquality, Mar 30, 2014
    #3
  5. Mar 30, 2014 #4
    melinda824

    melinda824 Bobtail Member

    16
    0
    Mar 11, 2014
    0
    Its a d12 , the fan cuts on every now and then we replaced the oil sending unit a couple months ago. When we really need the fan to kick on it don't and for what ever reason this truck has no override switch like our old columbia.
     
    melinda824, Mar 30, 2014
    melinda824, Mar 30, 2014
    #4
  7. Mar 30, 2014 #5
    passingthru69

    passingthru69 Road Train Member

    8,740
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    Jul 12, 2009
    davenport,Ia / ratchaburi, thailand
    0
    Install a manual switch. That way you can turn it on and off ahead of time. 30.00 tops for switch and wiring.
     
    passingthru69, Mar 30, 2014
    passingthru69, Mar 30, 2014
    #5
  8. Mar 30, 2014 #6
    melinda824

    melinda824 Bobtail Member

    16
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    Mar 11, 2014
    0
    Do u get it from volvo, or diy from radio Shack
     
    melinda824, Mar 30, 2014
    melinda824, Mar 30, 2014
    #6
  9. Mar 30, 2014 #7
    baha

    baha Road Train Member

    4,137
    2,834
    Jul 25, 2013
    ga
    0
    Yes any T/STOP switch will work, hook to 2 wires at ele. switch on fan control where air line lead to fan clutch,
     
    baha, Mar 30, 2014
    baha, Mar 30, 2014
    #7
  10. Mar 30, 2014 #8
    Dickeyroberts

    Dickeyroberts Light Load Member

    138
    30
    Feb 23, 2014
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    I just did what passingthru69 suggested to you today on my truck. I have a slightly different problem then you but it's works fine. My fan wouldn't shut off. Found that I wasn't getting any power to my fan clutch solenoid. Power opens solenoid on mine and let's air to fan which turns it off. No power turns fan on. Cost me 15 dollars to get it working.
     
    Dickeyroberts, Mar 30, 2014
    Dickeyroberts, Mar 30, 2014
    #8
  11. Mar 31, 2014 #9
    melinda824

    melinda824 Bobtail Member

    16
    0
    Mar 11, 2014
    0
    Tks will give it a try and update
     
    melinda824, Mar 31, 2014
    melinda824, Mar 31, 2014
    #9
  12. Apr 16, 2015 #10
    KB3MMX

    KB3MMX Road Train Member

    3,057
    2,574
    Dec 29, 2014
    Orrstown, PA
    0
    Did you try this? I was wondering why my Volvo doesn't have a manual fan override switch like most other trucks
     
    KB3MMX, Apr 16, 2015
    KB3MMX, Apr 16, 2015
    #10
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