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Thread: ECU Power Drain Stumper!

  1. #1

    Array
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    Join Date
    03-26-2015
    Posts
    29
    Location

    Hawthorne, FL
    Vehicle

    1987 Dodge Ram 50
    Engine

    G63B

    ECU Power Drain Stumper!

    1987 Might Max (Actually Dodge Ram 50) with 2.0 manual transmission. Fully charged battery drains with 6 hours. Hot circuit though ECU (mounted on front right firewall). Looked at some of the old fix it books and it suggests power should be cut off to ECU when key is off. Replaced Ignition Switch and ECU. Still drains power. Removed ignitions switch, pulled all the wire connectors and still have power drain. Red-blue wire is hot. Any ideas on where this has crossed with another power wire? Fuze block? Where is the sneaker circuit? Old wiring diagrams leave a lot to be desired. Suggestions appreciated.

    Bad ballast resistor or incorrect wiring at coil?

    Help.

    Thanks.

  2. #2


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    04-04-2011
    Posts
    684
    Location

    Columbus, OH
    Vehicle

    1992 Mitsubishi Mighty Max
    Engine

    Other
    MPI Relay

  3. #3

    Array
    Status
    Offline
    Join Date
    03-26-2015
    Posts
    29
    Location

    Hawthorne, FL
    Vehicle

    1987 Dodge Ram 50
    Engine

    G63B
    Thanks for the reply. Will give it a look.

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