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Thread: 14cux ECU 1995 disco 1 (3.9 engine)

  1. #1
    Join Date
    Feb 2009
    Posts
    27

    Default 14cux ECU 1995 disco 1 (3.9 engine)

    how do you know if a 14cux ECU is bad. I have replaced fuel pump and injectors only to find truck has fire at number 1 spark plug and fuel at fuel pump but will not start. The injectors are not fireing. I have put test light on 39 wire at ECU and when the engine is turned over the test light blinks. This tells me that ECU is Bad. Any other test would greatly be appreciated!! Patrick

  2. #2
    Join Date
    May 2006
    Posts
    2,020

    Default

    Do you have a check engine light on?
    Check the LED display for the code :-

    http://www.roversnorth.com/web/downl...R_EFIfault.pdf

    The 3.9 Discovery I has the same EFI fault code system as the Classic Range Rover.
    Les Parker
    Tech. Support and Parts Specialist
    Rovers North Inc.

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