Getting no spark or fuel 86 Supra - Page 2

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  1. #11
    CelicaSupra.com Member ddd228's Avatar
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    http://www.cygnusx1.net/Supra/Librar...Section=FI&P=8
    No one has mentioned the MAIN relay,yet.
    The ECU has to get a signal.
    Sure,if the ECU is not connected,no workee.
    Copy that TSRM. I have to use it all of the time.
    FREE.
    Dave in Seattle. I keep LATE hours.Hidden Content
    '84 type "L" ,Auto ,daily driver. Dk blue.

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  3. #12
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    Thanks to all of you for your input. Fortunately I have a Toyota service manual (85 Supra, same as my 86). Based on your inputs I checked the MAF first, it checked out fine. I then checked the coil. It passed the first 2 tests on the manual but failed the 3rd test (it has you connect a battery to test fire the coil).

    My good friend Dave Koos, Supradavis on here, let me borrow 2 (I only asked for one) coil/igniter modules. As soon as I plugged the first one it fired right up. Because he wasnít sure if both were good (hence the reason he let me borrow both) I decided to check the 2nd one so he knew if they were good, both were good. I then swapped one of his coils with mine (using my igniter) and no go. I then did the opposite, my coil with one of his igniters and that worked

    So I then asked Dave if he was willing to sell me one of his igniters and he said yes (at too low a price so I had to decline and offer him more, 4X what he was asking, which was too absurdly low).

    Again, THANKS for the tips as it did lead me towards the right place to look!
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  4. #13
    CelicaSupra.com Member SupraFiend's Avatar
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    Ah cool, glad you found it. The igniter must give some feedback to the ecu that its successfully firing, good to know.
    Black 86 mk2 Project Car
    New SDR 86 mk2 Daily User, Highway Cruiser AND Parking Lot Abuser in the works!

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  6. #14
    CelicaSupra.com Member gamble's Avatar
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    Good ole Dave, glad you got it sorted.

  7. #15
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    I have known Dave for probably 17 years or so (we have both been in the Supra community for a long time) and he has always been a great guy!

    Suprafiend, absolutely, the spark plugs were bone dry when the coil was not firing and even with one spark plug removed when cranking there was no smell of gas.

    Again, thanks all for your inputs!
    Hidden Content
    - 1998 6speed Black/Black Genuine TRD Widebody Supra 76S turbo, Titan/Crower 3.4L Stroker with a Stage 3 Titan Street/Race Head, 19X13 and 19X10 IForged Astras with 355/25/19 and 275/30/19 Pirellis, and much more.
    - 1997 Auto Red/Tan BPU Supra
    - 2001 Sapphire Blue Viper GTS
    Borla, Fidanza, 19" CCW 505A, Eibachs, Smooth Tubes, Stereo, Navigation
    - 2005 Black RAM SRT-10 Quad Cab "Viper Truck", Magnaflow exhaust

  8. #16
    CelicaSupra.com Member ddd228's Avatar
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    This forum has been a HUGE help to all that have that have asked for help and have given help!
    If you go though life without helping others,you have just wasted your time.

    I'm just 65,but this would be a good epitaph:
    "Well,that was fun for a while".

    I am so sad that Dave Andrew and his wife Barb, is gone from this community,guys.Others, as well.
    No one lives forever.

    I'll do what I can to pass along my knowledge to any one that wants to listen to my jabber.
    So will a lot of us in this forum ,that is all about sharing information.
    Please continue this information GOLD MINE.

    Yeah,there is a lot of "Dave's" on this valuable forum.
    You guys ROCK!
    Now,back to our regularly scheduled programming:
    Supra's rock!

    Dave in Seattle. I keep LATE hours.Hidden Content
    '84 type "L" ,Auto ,daily driver. Dk blue.

  9. #17
    CelicaSupra.com Member
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    Interesting. The igniter does indeed send an IGf (Ignition Fired) signal back to the ECU, which counts a maximum of 11 sent IGt (Ignition Triggered) pulses with no response before throwing a code 14. However, in my research on Dragon's ignition failures, there was still fuel going through the engine because the cold-start injector doesn't work off the ECU, there's a separate temperature switch that disables it when the coolant starts to flow. If the code 14 cuts off injection, there should still be a faint smell of fuel in the exhaust.

    Oh well, glad you got it working again! It's worth getting yourself a spare igniter and keeping it in the car, so I hear this is the most common electronic component to fail and can do so without warning (as you've found).
    Rob - 100% British
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