85 W150 intermittent heater issue

Discussion in 'General Discussions' started by Brucecmc, Jan 18, 2017.

  1. crazzywolfie

    crazzywolfie Senior Member

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    hahaha ya i could understand that. i don't know much about repairing the systems but i would guess it requires replacing pretty much all the seals in the system and recharging it if that is the issue with yours.
     
  2. Brucecmc

    Brucecmc Senior Member

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    Wolfe, do I pop the fuse out and check across those terminals ??
     
  3. crazzywolfie

    crazzywolfie Senior Member

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    popping the fuse out might make it easy to get a good reading. 1 side or the other should have 12v with the key in the run position.
     
  4. Brucecmc

    Brucecmc Senior Member

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    So it doesn't skew the potential problem by removing the fuse, to check across the fuse terminals.
     
  5. Brucecmc

    Brucecmc Senior Member

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    Good voltage at the fuse panel. I checked at the blower motor resistor, seems one terminal had 5v and the other 12v. And then there was a single terminal, don't know what it was (see pic)
     

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    Last edited: Jan 21, 2017
  6. Brucecmc

    Brucecmc Senior Member

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    Well that's the resistor. I checked at the connector to this. Like dsexpress said the other day, it might be this sucker. Gonna replace it tomorrow (had to order) and see if it is so.
     
  7. crazzywolfie

    crazzywolfie Senior Member

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    do you know what color the wires were that had power? you can try pulling it out to see if there is any issues with it.
     
  8. Brucecmc

    Brucecmc Senior Member

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    I don't know. I was just excited there was power on that side of the resistor.
     
  9. Stewart

    Stewart Junior Member

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    It could be a bad fan switch. I have had many burn out (some melted some). I always grabbed a couple when junkyarding.
     
  10. Brucecmc

    Brucecmc Senior Member

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    Wolfie,

    You asked which pairs had what voltage. Hers is a pic.

    The white/blue are the ones that had 5v
    The brown/dark green had 12v

    And that single green had nothing. But possibly I did t have it grounded well enuf when I took the reading ?
     

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