LE Jetronics: need help what to do next????
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  • 1 Post By Frozen Tundra GT
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Thread: LE Jetronics: need help what to do next????

  1. #1

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    LE Jetronics: need help what to do next????

    I think this is the right section if not sorry mods. Any ways I have a 73 gt and am in the process of installing the le jetronics. I ran into a wall I cannot get the car to start.
    1. checked fuel pressure ok
    2. checked spark ok
    3. made sure hot and ground are hooked up to le harness
    After that i am lost it almost seems like the injectors aint firing. I bought the complete system and followed the instructions the best i could. If there is anyone out there that could help i would be grateful.
    thanks jason
    Last edited by tekenaar; 05-31-2008 at 08:14 PM.

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  3. #2
    Detritus Maximus opelbits's Avatar
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    Where is the power for your ecu coming from? Does it have a decent ground?
    Do you have 12 volts (confirmed, not assumed) going to it?

    Can you post a pic of the engine bay and the FI installed?

    Do you have a good ground from the motor to the frame/battery?
    "No, it's not fiberglass."
    "No, the motor is not in the back."
    "No, your friend in high school did not 'peg' his speedometer."

  4. #3

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    The 12 volt supply is coming direct from the battery it is just temp while I am trouble shooting. It is attached to what appears to be a 10 gauge red wire with a pig tail located about half way on the harness. I do have confirmed power to the harness. I do have on plug that is 3 white 1 black 1 black/red this is crewed but it looks like this _-_ The instructions I have said ignore this plug but the pics dont look the same. I have been looking for better instructions on the net but havent found any yet
    I will double check the power just to eliminate that also do you know if the relay should click or anything. It does nothing at all I have power to it but makes no noise or movement( I took the cover off to see)
    Thanks jason
    pics coming soon

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  6. #4
    Kalifornia Kid DennisGardiner's Avatar
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    The 2.0L LE EFI system is easy to wire up. As simple as the 75 EFI.

    Black/Red wire - Key Start on Starter (power only while cranking)

    Green wire - Tach signal wire ( coil (-) wire & tachometer wire)
    {this is what tells the computer 'when' to fire the injectors}

    Black wire - Ignition ON (+12 volts when the key is turned ON)

    White or Blue wire - +12 volts to the EFI fuel pump (computer/relay controlled)

    Red wire - +12 volts to Battery (power all the time)

    Brown wire - Ground (bolts to the bacl of the EFI intake manifold.
    Drifting: dorifuto sōkō, a motor sport where the driver intentionally oversteers, causing loss of traction in the rear wheels through turns, while preserving vehicle control.

  7. #5

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    thanks to the dennis and opelbits I got the car to run just need to clean everthing up I have wires running everywhere


    Thanks again
    jason

  8. #6
    Opeler BlitzGT's Avatar
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    If I might ask, where did you get the kit from?

  9. #7
    Bikini Inspector Frozen Tundra GT's Avatar
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    Quote Originally Posted by DennisGardiner View Post
    The 2.0L LE EFI system is easy to wire up. As simple as the 75 EFI.

    Black/Red wire - Key Start on Starter (power only while cranking)

    Green wire - Tach signal wire ( coil (-) wire & tachometer wire)
    {this is what tells the computer 'when' to fire the injectors}

    Black wire - Ignition ON (+12 volts when the key is turned ON)

    White or Blue wire - +12 volts to the EFI fuel pump (computer/relay controlled)

    Red wire - +12 volts to Battery (power all the time)

    Brown wire - Ground (bolts to the bacl of the EFI intake manifold.
    bingo, just what I was looking for!!!thanks, all these years later!
    ken2 likes this.

  10. #8
    Certified Opelholic davegt27's Avatar
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    FI Conversion

    when I click on the link I posted it takes me to a totally different location

    it should be Kripton.org site


    kripton.org/opel/LE2%20Jetronic/LE%20Jetronic%20conversion.htm
    Last edited by davegt27; 06-08-2019 at 04:34 AM.
    norbertone.gt371 likes this.

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