'68 de ville starter/electrical SNAFU

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Electrical Technical Information Discussion, '68 de ville starter/electrical SNAFU in Item Specific Cadillac Discussion; I replaced the bulbs in the rear reading lights 'engine temp' light came on - and has remained on ever ...
  1. #1
    donkeyparty is offline Cadillac Owners Member
    Automobile(s): 1968 Sedan de Ville
    Join Date
    Jun 2011

    '68 de ville starter/electrical SNAFU

    I replaced the bulbs in the rear reading lights

    'engine temp' light came on - and has remained on ever since

    [whether the key is in the ign or not].

    battery went completely dead after that

    I replaced it with a good used truck battery {have kept it unhooked}

    15-20 attempts at starting - none have worked

    despite testing and recharging the battery [after sitting for a few weeks at a time

    so ... I took it to a mechanic [who kept it for 2 weeks] -

    he told me it was a bad connection at the alternator.. I drove it home

    the engine temp light came on 3 days later and it's been downhill ever since so to speak...

    anything anyone's got will be more than I have,. thanks!!


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  3. #2
    Garys's Avatar
    Garys is offline Cadillac Owners Fanatic
    Automobile(s): 1968 CDV / 1970 FWB /1979 FWB / 1995 Eldo
    Join Date
    Aug 2007
    San Diego

    Re: '68 de ville starter/electrical SNAFU

    I would check the voltage regulator. One of the points inside could be sticking, causing a back feed, even with the key in the off position. Tap on it with the butt of a screwdriver and see if the light goes out. I am thinking the engine temp. is actually your alternator light. If the engine temp light is on, usually a warning buzzer comes on too (past experience). Maybe the two warning lights got crossed somewhere along the way.

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