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Help, No spark on my new build.

Discussion in '1st Gen. Tacomas (1995-2004)' started by ThGdThBdandThUgly, Nov 28, 2010.

  1. Nov 28, 2010 at 8:25 PM
    #1
    ThGdThBdandThUgly

    ThGdThBdandThUgly [OP] Member

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    I have been having problems with my new build and it seems like everyone I talked to said to join this site and maybe will find some help so here I am.

    Main Problem: No Spark (95.5 3RZ)

    Misc. Useful Info:
    95.5 3RZ Engine
    95.5 3RZ Engine harness (which has 2 grey plugs to plug into the ECM)
    95.5 3RZ ECM (which is ready for 3 grey plugs to go into it)
    97 cab sticker on door says 11/96 (which has a white plug under the dash to plug into ECM)

    I have the pin out for both the 95.5 and the 97 and I have made what I thought was all changes needed to the white plug but still NO SPARK.

    ANY IDEAS?
     
  2. Nov 28, 2010 at 8:30 PM
    #2
    Yoytoda

    Yoytoda The Little Truck That Could

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    Roland
    Big Bear,CA / Upstate NY(Saratoga)
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    completely stock
    someone i know that did a 3.4 swap had this issue. he found that he had accidentally miss wired the engine immobilizer circuit. he had it grounded. he just cut the wire and had spark
     
  3. Nov 28, 2010 at 8:47 PM
    #3
    ThGdThBdandThUgly

    ThGdThBdandThUgly [OP] Member

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    What is the Immobilizer Circuit? Is it in the White Plug inside the Cab?
     
  4. Nov 28, 2010 at 9:02 PM
    #4
    Yoytoda

    Yoytoda The Little Truck That Could

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    Roland
    Big Bear,CA / Upstate NY(Saratoga)
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    2010 Tacoma Regular Cab 4x4
    completely stock

    it might be...im not 100% sure. some years have a circuit that will kill ignition without the key... so you cant hotwire it. the older styles dont have the computer chip like new vehicles but still need the key in the ignition

    the other possibility is many vehicles have a fusable link between the ignition switch and the coils...
     
  5. Nov 30, 2010 at 5:20 AM
    #5
    JDBECK23

    JDBECK23 Well-Known Member

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    King George, Va
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    You're going to have to break out the multimeter and start tracing signals to find out which one has been lost, so you can find out where it's being lost at.

    Start simple. Check for 12v going into your ECU, then 12v out. Manual tranny, check the clutch switch, auto tranny, check the park switch. Then check the input to the ECU with your pin outs. Then ignition switch function, and then check the ignition input to the ECU. Then starter solenoid, starter, etc.
     
  6. Nov 30, 2010 at 6:25 AM
    #6
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    Beech Creek
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    5100's all on fours
    Got any more info?
    Why the swap?
    What was in the receiving vehicle prior?
    What trans is in the receiving and donor vehicle?
     
  7. Dec 1, 2010 at 7:53 PM
    #7
    ThGdThBdandThUgly

    ThGdThBdandThUgly [OP] Member

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    Well it is a unique build. So here it goes.

    1989 Standard cab IFS frame
    1995.5 2.7 Engine
    1994 5 Speed Tranny with duel transfer cases
    1997 Tacoma Extended Cab Body
    2004 Tacoma Front Clip
    2004 Tacoma 4 door Crew cab Bed that is Bobbed 10"
    4" suspension lift
    3" body
    39 X 18.50 X 15 Baja Claws on 14" wide wheels

    My goal was to build something similar to an Arctic Truck as that is what we mainly do.
     
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