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98 pete fan clutch issues

Discussion in 'Peterbilt Forum' started by flaco, Mar 1, 2015.

Page 3 of 3
  1. Mar 1, 2015 #21
    clausland

    clausland Road Train Member

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    North Woods
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    Disconnect the wire coming from the sensor and see if the solenoid is still being powered up...I'm assuming that you have checked the coolant level and have ensured there's no air pockets in the system right?....That sensor shouldn't be supplying power to the solenoid when not needed.....If you're sure it's the right one, perhaps it's defective.....
     
    clausland, Mar 1, 2015
    clausland, Mar 1, 2015
    #21
    flaco Thanks this.
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  3. Mar 1, 2015 #22
    flaco

    flaco Bobtail Member

    11
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    Mar 1, 2015
    laredo, texas
    0
    I did disconnect the low coolant sensor and left it off a few minutes. Nothing happened, fan continued spinning.
    Coolant is topped off, loosened the radiator cap to release a bit of pressure...even disconnected the batteries for a while.
     
    flaco, Mar 1, 2015
    flaco, Mar 1, 2015
    #22
  4. Mar 1, 2015 #23
    beemergary

    beemergary Light Load Member

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    Apr 11, 2014
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    Fan should be tied into AC and when you run defrost it runs AC. My old Pete's AC is that way.
     
    beemergary, Mar 1, 2015
    beemergary, Mar 1, 2015
    #23
    flaco Thanks this.
  5. Mar 1, 2015 #24
    flaco

    flaco Bobtail Member

    11
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    Mar 1, 2015
    laredo, texas
    0
    Hadnt thought of that since i wasnt using the ac...but i didrun defrost just to make sure it was working because the company i'm leased on to requires that your defrost works when they inspect your truck
     
    flaco, Mar 1, 2015
    flaco, Mar 1, 2015
    #24
  7. Mar 2, 2015 #25
    bad-luck

    bad-luck Road Train Member

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    Baltimore, Maryland
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    I didn't know the fan spun freely when the truck is off. Not an air leak or fan clutch issue. The ecm tells all these the components what to do. So at this point could be a sensor wiring problem or an ecm problem. Highly unlikely its the ecm. You may want to have it plugged in to a computer it may help you pinpoint the problem
     
    bad-luck, Mar 2, 2015
    bad-luck, Mar 2, 2015
    #25
    flaco Thanks this.
  8. Mar 2, 2015 #26
    flaco

    flaco Bobtail Member

    11
    0
    Mar 1, 2015
    laredo, texas
    0
    Bad-luck, i'm just fixin to leave the peterbilt house here in laredo. Plugged it up and canceled out my Low Coolant Level Sensor.
    The sensor is new but the harness and plug look like somebody did some alterations, so now its working as it should. Really apreciate everybody's help and if someone else has the same issue, now we have a little more knowledge.
    By the way, guys here at Rush Truck Center didnt even bill me. Thats what really made my day.
     
    flaco, Mar 2, 2015
    flaco, Mar 2, 2015
    #26
  9. Mar 2, 2015 #27
    bad-luck

    bad-luck Road Train Member

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    Nov 16, 2013
    Baltimore, Maryland
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    I'm glad to hear that you got squared away and they didn't charge you and you're very welcome
     
    bad-luck, Mar 2, 2015
    bad-luck, Mar 2, 2015
    #27
    flaco Thanks this.
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