94 Concours intermittant no start

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Northstar Engines and System Technical Discussion Discussion, 94 Concours intermittant no start in Cadillac Engine Discussion; The car is a 94 Cadillac Concours - basically it's a Sedan de Ville with the 4.6 Northstar engine. Has ...
  1. #1
    SanDiegoPaul is offline Cadillac Owners Member
    Automobile(s): 94 Concours, 2002 DTS
    Join Date
    Dec 2008
    San Diego

    94 Concours intermittant no start

    The car is a 94 Cadillac Concours - basically it's a Sedan de Ville with the 4.6 Northstar engine. Has a new battery and the alternator works well; charges at over 14V and the battery stays fully charged.

    Yet at times, the electrical system of the car goes dead & lifeless. No lights, door locks, and of course no starter either. This will NEVER HAPPEN while you drive. If it starts up you are golden, and can drive it all day. Once you shut it down however, it goes dead right away; you can't even lock the doors with the remote.

    I have found that you can get the elect system to come back to life at times by turning the key in the ON POSITION for a few seconds. Once the dash comes up and there's power, it will start right up.

    Suggestions greatly appreciated. (Battery cables clean, good, and tight)

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: 94 Concours intermittant no start

    Intermittent ignition switch maybe. Start by pulling the DTC's. You may find a clue there.

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