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3406B coolant temp sensor location

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Jan 1, 2022.

Page 5 of 9
  1. Jan 6, 2022 #41
    mile marker 27

    mile marker 27 Road Train Member

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    I’ve got a new coolant temp sending unit kit coming from Pete.
     
    mile marker 27, Jan 6, 2022
    mile marker 27, Jan 6, 2022
    #41
    wore out and Oxbow Thank this.
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  3. Jan 6, 2022 #42
    mile marker 27

    mile marker 27 Road Train Member

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    Got all the outside lights working, but still no dash lights or voltage meter working. Jake brakes are also not working.
     
    mile marker 27, Jan 6, 2022
    mile marker 27, Jan 6, 2022
    #42
    wore out and Oxbow Thank this.
  4. Jan 6, 2022 #43
    Oxbow

    Oxbow Road Train Member

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    Wouldn't affect the voltage meter, but you might check the dimmer switch for dash light problems. I ended up just taking it out of one of ours.
     
    Oxbow, Jan 6, 2022
    Oxbow, Jan 6, 2022
    #43
    Pamela1990 and mile marker 27 Thank this.
  5. Jan 6, 2022 #44
    mile marker 27

    mile marker 27 Road Train Member

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    My dimmer switch is built into my turning signal. Don’t know if they replaced this or if they were originally located there or in the floor?
     
    mile marker 27, Jan 6, 2022
    mile marker 27, Jan 6, 2022
    #44
    Pamela1990 Thanks this.
  7. Jan 6, 2022 #45
    062

    062 Road Train Member

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    Your dash light dimmer. Probably beside the wiper switch.
     
    062, Jan 6, 2022
    062, Jan 6, 2022
    #45
    Big John Classic HQ, mile marker 27, Pamela1990 and 1 other person Thank this.
  8. Jan 6, 2022 #46
    Oxbow

    Oxbow Road Train Member

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    Thanks, that's what I meant.
     
    Oxbow, Jan 6, 2022
    Oxbow, Jan 6, 2022
    #46
    wore out, mile marker 27, Pamela1990 and 1 other person Thank this.
  9. Jan 6, 2022 #47
    mile marker 27

    mile marker 27 Road Train Member

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    I’ve turned it with no results from the beginning. I’ll get in behind it tomorrow. Thanks.
     
    mile marker 27, Jan 6, 2022
    mile marker 27, Jan 6, 2022
    #47
  10. Jan 8, 2022 #48
    mile marker 27

    mile marker 27 Road Train Member

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    Connection at the fuse was weak. Lights are good now.
     
    mile marker 27, Jan 8, 2022
    mile marker 27, Jan 8, 2022
    #48
    Oxbow Thanks this.
  11. Jan 8, 2022 #49
    mile marker 27

    mile marker 27 Road Train Member

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    Now I’m on to the jake brake. There’s a small black plastic box screwed onto the rear of the pump, with two spade terminals. Neither wire is hot, with key on or off.
     
    mile marker 27, Jan 8, 2022
    mile marker 27, Jan 8, 2022
    #49
    Oxbow Thanks this.
  12. Jan 8, 2022 #50
    wore out

    wore out Numbered Classic

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    Power goes into on off switch at dash, out of it to clutch switch out of it into the back of pump then out of the back of pump to the Jake terminals.




    I still think on volt gauge problem you have a ignition accessory circuit issue. Since the gauge and Jake are both on the blink. Mine are on same circuit.

    in the fuse box on the right side row toward the top like maybe 2nd or 3rd. Make sure you have power in and out

    power comes from back of key switch
     
    wore out, Jan 8, 2022
    wore out, Jan 8, 2022
    #50
    Last Call, Oxbow and mile marker 27 Thank this.
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