How do I know if the block heater is working?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by snowbird_89, Feb 28, 2016.

  1. snowbird_89

    snowbird_89 Road Train Member

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    How can I tell? Someone told me to feel the cord and see if it's warm. That doesn't seem like the right way though considering the cord will be laying on the cold ground. Is it true that the block heater will burn out over time? Don't know if it matters, but my truck is a 2010 International Transtar 8600 with Cummins ISM engine.
     
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  3. Straight Stacks

    Straight Stacks Paper Cha$er

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    Take it out for a drink. Whisper in its ear. If it get's hot and bothered, it's working.
     
    Last edited: Feb 29, 2016
  4. swaan

    swaan Road Train Member

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    Oh Geez, I don't know maybe the block will be warm to the touch.??:)
     
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  5. AModelCat

    AModelCat Road Train Member

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    Plug it in with the engine cold and leave it for 10 minutes or so. Then feel the engine block around the block heater. It should be noticeably warmer than the rest of the engine block.
     
  6. Cranky Yankee

    Cranky Yankee Cranky old ######

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    if it is -20 and starts in the morning it is ok
     
  7. Yves kanevil

    Yves kanevil Medium Load Member

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    After plugging it in I always stick my head under passenger side fender and can hear a slight hissing sound.
     
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  8. blairandgretchen

    blairandgretchen Road Train Member

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    I've got a scan guage, that reads lower than the dash guage.
    After plugging it in, on a dead cold day at 10 degrees, I came back a few hours later to find it reading 75 on EOT.

    That, and what @NorthernMechanic said.
     
  9. mnmover

    mnmover Road Train Member

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    When you plug it in, slowly put the ends together and you should hear a spark noise when the cord connect. Unplug it and should hear it again when the cords separate.
     
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  10. haycarter

    haycarter Road Train Member

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    Turn Ignition On, & read Temp Gauge .........
     
  11. sawmill

    sawmill Road Train Member

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    o_O10 degrees is dead cold? You need to come up to my neck of the woods.
     
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