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Dt466 ipr valve or icp sensor

Discussion in 'International Forum' started by B77, Jun 30, 2020.

Page 4 of 6
  1. Jul 10, 2020 #31
    B77

    B77 Light Load Member

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    This plug is behind the compressor and there is zero voltage to it, ipr valve wiring is running from the same harness. And I have 12 volts on them 31C19B26-9AE2-49D9-8142-2EC82ECC0EF5.jpeg
     
    B77, Jul 10, 2020
    B77, Jul 10, 2020
    #31
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  3. Jul 10, 2020 #32
    B77

    B77 Light Load Member

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    After I unplugged that one. I have zero voltage again ipr valve to. Must be something in the wiring. Only where to look. Truck won’t crank anymore now.
     
    B77, Jul 10, 2020
    B77, Jul 10, 2020
    #32
  4. Jul 10, 2020 #33
    B77

    B77 Light Load Member

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    Normally when I unplug the power feed fuse. All the electrical is clicking and such. Dead also.
     
    B77, Jul 10, 2020
    B77, Jul 10, 2020
    #33
  5. Jul 11, 2020 #34
    Heavyd

    Heavyd Road Train Member

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    The three wire plug is your oil pressure sensor. One pin will have 5 volts, one is signal ground and other is signal return to the ecm. IPR will have 12 volts on one pin with key on. The relays at the firewall area are prone to bad connection. Leave the key on, everything connected and just wiggle the wiring and relays gently in that area and see you can find a bad spot.
     
    Heavyd, Jul 11, 2020
    Heavyd, Jul 11, 2020
    #34
    jamespmack and B77 Thank this.
  7. Jul 11, 2020 #35
    B77

    B77 Light Load Member

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    That’s a good idea. I already did some wiggles but after I pulled the oil sensor plug. Everything went to zero volts. Can it be the sensor it self that messes everything up?
     
    B77, Jul 11, 2020
    B77, Jul 11, 2020
    #35
  8. Jul 11, 2020 #36
    Heavyd

    Heavyd Road Train Member

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    The 5 volt supply is shared by the ICP sensor, so if it is shorting it could cause ICP sensor issues too.
     
    Heavyd, Jul 11, 2020
    Heavyd, Jul 11, 2020
    #36
    jamespmack Thanks this.
  9. Jul 11, 2020 #37
    jamespmack

    jamespmack Road Train Member

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    A 2005 with miles on it and white smokes while running or breaks up with throttle? Need injectors.
     
    jamespmack, Jul 11, 2020
    jamespmack, Jul 11, 2020
    #37
  10. Jul 11, 2020 #38
    B77

    B77 Light Load Member

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    Basically the story of this week: got truck running after cleaning fuel housing drove 80km problem less next morning zero oil/fuel pressure. Engine still cranked. Fixed the fuel pressure (stays pressured). After I pulled the oil pressure sensor connector. Zero cranking and lost all voltage. At the ipr valve to.

    I am thinking of pulling the whole wiring harness of and ripp it apart and hopefully I find it in there(I use the truck private but I am 9 weeks down now) I really appreciate every feedback you guys give me.
     
    B77, Jul 11, 2020
    B77, Jul 11, 2020
    #38
  11. Jul 14, 2020 #39
    B77

    B77 Light Load Member

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    Can it be something at the starter. Looks like there are 2 solenoids or a ground wire somewhere?
     
    B77, Jul 14, 2020
    B77, Jul 14, 2020
    #39
  12. Jul 15, 2020 #40
    Inderjit

    Inderjit Medium Load Member

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    There is a clean power harness that runs from the batteries to the engine harness. It connects with a Metripak connector near the starter. That harness is bad for rubbing through and corroding. Make sure you have good power there. I use a headlight and make it power both high and low beam.
     
    Inderjit, Jul 15, 2020
    Inderjit, Jul 15, 2020
    #40
    B77 and QUALITYTRUCK Thank this.
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