86 volvo 240 dl wagon

Discussion in 'Volvo 240' started by John Cadella, Aug 5, 2003.

  1. John Cadella

    John Cadella Guest

    181k miles, very well maintained.

    We replaced alternator with 80 amp unit (twice) and replaced the battery but
    I got stuck yeseterday - died on a freeway exit ramp stop light. had to be
    towed home.

    I charged the battery at home, and it started fine - what could be caused
    this problem?
    John Cadella, Aug 5, 2003
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  2. John Cadella

    Arnold Perez Guest

    Hi John, when you say that you replaced the alternator twice, the
    alternators that you are installing, are they rebuilt?, did you measure the
    voltage out of the alternator with load on ( headlights on, rear defroster
    on, and fan blowing?)
    the voltage at the battery should be around 14.0 Volts. Check for ground
    wire from the alternator case to chassis, and from -batt to chassis. When
    the alternator failed, did you see all the warning lights except for oil
    pressure on?
    Please measure the voltage, check your wires and lights and post again.

    Arnold Perez, Aug 5, 2003
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  3. John Cadella

    John Cadella Guest

    yes, alternators were rebuit and tested before we bought.

    alt case has good ground.

    when it failed sunday, I didnt notice any lights on the dash - not even oil

    tonight before I started the motor, the only light i noticed was seatbelt
    and oil pressure.

    I think my brother broke a water temp sender wire when he put the alt in.

    charger ws on 2amps automatic charge for 2 days prior to test, then drove
    around the block.

    battery volts at rest is 12.78 appx.

    battery volts when running 12.5 appx.

    battery volts when running with lights on 12.3 appx.

    didn't get to check alt output as the rains came.
    will do friday and let you know.
    John Cadella, Aug 6, 2003
  4. Test the system to see if you are drawing current while it is off.
    Then, check the fuse block with a multimeter.

    My automatic door lock relay went south and suddenly it was drawing
    a full amp all the time(all four doors trying to engage all the time).

    Disconnected the relay(manual locks now-no big loss) and everything
    worked perfectly.
    Joseph Oberlander, Aug 6, 2003
  5. John Cadella

    John Cadella Guest

    now that I think of it, I wonder if the dash bulb is burned out for the
    battery/alternator indicator.
    I don't see it on when I turn the key to run with the engine off.
    John Cadella, Aug 6, 2003
  6. John Cadella

    Dave Shannon Guest

    You're on to something there John. The only time I've ever been stranded in
    a Volvo was because I didn't notice the alternator light was not coming on
    with the key in the run position before starting the motor. In my case it
    was a failed voltage regulator with plenty of brushes but bad internals.
    With a new alternator your issue is more likely the bulb or the small
    exciter wire to the alternator as Arnold described. How is the engine
    harness on your car, any flaking insulation as was so common on the '80-87
    Volvos? \
    Good luck tracking it down, you are on the right track.
    Dave Shannon
    (Spring Valley CA)
    1988 240 DL 18X,XXX
    1985 240 Ti 20X,XXX
    1984 245 DL 20X,XXX
    1984 245T 19X,XXX
    '01 Jeep Wrangler Sahara 10K
    Dave Shannon, Aug 6, 2003
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