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1999 2.7 not starting

Discussion in '1st Gen. Tacomas (1995-2004)' started by 2001convertable, Oct 25, 2020.

  1. Oct 25, 2020 at 11:52 AM
    #1
    2001convertable

    2001convertable [OP] Well-Known Member

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    Hi, I just installed a new used engine in my 1999 tacoma 2.7. I'm not getting spark. Can anyone give me any ideas? Plus can anyone give me the firing order in retrospect to the two coil packs.
     
  2. Oct 26, 2020 at 3:19 PM
    #2
    2001convertable

    2001convertable [OP] Well-Known Member

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  3. Oct 26, 2020 at 3:21 PM
    #3
    2001convertable

    2001convertable [OP] Well-Known Member

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    I have the firing order now. Im still not getting spark. I checked all the fuses and plug at eco and various connectors. I have no power at the cold pack plugs
     
  4. Oct 26, 2020 at 4:01 PM
    #4
    Glamisman

    Glamisman Well-Known Member

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    attached is the overall schematic for a MY 2000. Is it different for a 1999?... I dont have a 99 schematic to compare.
     

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  5. Oct 26, 2020 at 4:03 PM
    #5
    CoWj

    CoWj Lost and Found at the same time.

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    Double check all the ground straps on the engine, that is usually what the cause is. See if there is an empty ground near by the coil packs.
     
  6. Oct 26, 2020 at 8:27 PM
    #6
    TnShooter

    TnShooter The TacomaWorld Stray

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    Thanks for the help. Going off that

    I’d start by looking to see if I have power to the Black and Red wire on the connector for the ignition coils with the key in the ON position.
     
  7. Oct 27, 2020 at 3:42 AM
    #7
    2001convertable

    2001convertable [OP] Well-Known Member

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    I checked for power at the two plugs to the coil packs with the key on. I checked across the red and black. I also checked from red to ground as well. Nothing.
     
  8. Oct 27, 2020 at 11:31 AM
    #8
    TnShooter

    TnShooter The TacomaWorld Stray

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    The Black with Red stripe wire is a single wire.
    It should have power to it when the key is in the on position.
    According to the diagram @Glamisman provided, the power comes from the 30A AM2 fuse.
    I honestly don’t suspect the fuse to bad, but it’s worth checking.
    There are 2 connection between the the ignition and coil packs.
    They are if1 and ik2, I don’t have wiring diagrams for those, maybe some one can help you out on their locations. You need to make sure they are plugged in.
     
  9. Oct 28, 2020 at 2:59 AM
    #9
    2001convertable

    2001convertable [OP] Well-Known Member

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    Thank you. I checked for voltage last night at the plugs and again no good.Tonight I will check the sensors. Does anyone know the reading I should get off the crankshaft and camshaft sensors?
     
  10. Oct 28, 2020 at 6:51 AM
    #10
    Glamisman

    Glamisman Well-Known Member

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    I would double check the PCM grounds on the motor. Usually a group of 5 or more brown wires on a ring connector near the engine data link connector/throttle body.
     

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  11. Oct 28, 2020 at 8:07 AM
    #11
    2001convertable

    2001convertable [OP] Well-Known Member

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    I will look at that and get back. At this point I need all the help. It kind of stinks that all the work with the swap and detailing the compartment and engine this would happen.
     
  12. Oct 28, 2020 at 8:09 AM
    #12
    2001convertable

    2001convertable [OP] Well-Known Member

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    Come to think about it. I hooked up my fluke to the block and to the negative on the battery and the chassis as well. It read good at almost zero. It also rang out on tone.
     
  13. Oct 30, 2020 at 3:08 AM
    #13
    2001convertable

    2001convertable [OP] Well-Known Member

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    Hi, does anyone know the reading I should get for the crankshaft sensor? I check most of the ground last night but the rain here has been crazy the last few days. The camshaft sensor is in good range. I cleaned most of the grounds last night. I including the intake bunch of grounds. I will dive in deep tomorrow as the weather is looking good.
     
  14. Oct 30, 2020 at 4:33 AM
    #14
    2001convertable

    2001convertable [OP] Well-Known Member

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    Just curious, can the mass air flow sensor prevent starting?
     
  15. Oct 30, 2020 at 4:37 AM
    #15
    tortoise_taco

    tortoise_taco Well-Known Member

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    It'll start with the MAF disconnected but throw a code, I left mine unplugged after cleaning it once
     
  16. Oct 30, 2020 at 12:03 PM
    #16
    DrZ

    DrZ Well-Known Member

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    If you're not getting voltage to the coils with key ON, then why are you moving on to checking sensors? The sensors won't prevent voltage to the coils. The circuit that provides voltage to the coils is pretty simple. Figure that problem out first.
     

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