B3 ignition relay / ignition on

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  • mk1mistry
    S2Forum Tinkerer
    • Sep 2012
    • 4
    • Country: United States

    #1

    B3 ignition relay / ignition on

    Afternoon Gents,

    I've got a B3 90 QS with an S2 engine,

    It seems to have developed an issue where the ignition stays on,
    When the vehicle is running the cooling fan turns off when the key is removed, but the engine will continue running.

    Has anyone had this issue ?
    Also where is the ignition relay so I have a starting point to check,

    Thanks
  • UrS4boy
    S2Forum Obsessed
    • Feb 2006
    • 11859
    • Country: Canada

    #2
    Broken ignition switch. Common enough.

    Have look at this C4 ignition switch replacement DIY for some B3 hints.:

    (PN is the same = 4A0905849B)

    http://12v.org/urs/ReplacingTheIgnitionSwitch.pdf

    RS2'd 93 UrS4 5 spd sedan
    94 UrS4 V8 6 spd manual avant

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