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Throwing codes wont start

Discussion in '1st Gen. Tacomas (1995-2004)' started by 97ktstacco, Dec 20, 2016.

  1. Dec 20, 2016 at 9:49 PM
    #1
    97ktstacco

    97ktstacco [OP] Member

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    Overnight my truck wont start. 97 tacoma 5 speed 4x4 3.4L. 291k
    Throwing the following codes
    -MAF/VAF circuit fault
    -Intake air temperature circuit problem
    -TPS "A" circuit problem
    Ive checked my timing, plugs and wires. Any sugestions before i dump more money into it? Also blue smoke from exhaust and raw fuel coming from exhaust right befote it died. Now it wont even hit. Just spins over. It has fire on the plugs.
     
  2. Dec 20, 2016 at 10:17 PM
    #2
    DrZ

    DrZ Well-Known Member

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    It's unusually for all of them go at once. Seems like a wiring problem. Pretty sure Toyota likes to ground all these sensors back to the computer on the same wire, so possibly a broken ground wire back to the computer.
     
  3. Dec 20, 2016 at 11:21 PM
    #3
    Caligula

    Caligula Well-Known Member

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    Ditto. Get the FSM, go to the engine electrical wiring schematics for your car. Find all these sensors and look for a common ground. Another page in the FSM will have the code given for the ground point and a corresponding picture of the engine bay.
     
  4. Dec 21, 2016 at 10:23 AM
    #4
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    Scottsdale Arizona
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    Supercharged, AEM FIC/6, Meth Inj, ION Alloy's, Radio & Phone steering Wheel controls,Fabtech AAL, Billie's wrapped with 880's , Tundra big brake conversion, bully bars and Pioneer DDin Stereo/dvd with exterrnal usb ports. 290K and going strong.
    Last edited: Dec 21, 2016

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