Nissan automobiles

Heat Blower Only On High…

Got a 87 Sentra and the heating blower only works on the highest setting!  Just
 adjusted my alternator belt previously, must’ve knocked something loose?!  But
 it DOES work on high.. hmmm

Thanks in advance
jon

Comments (4)




4 Responses to “Heat Blower Only On High…”

  1. admin says:

    I would be highly interested in the response.  I’ve got an 89 Maxima, 181K
     miles, that has the same problem.  The blower will only work on the maximum
     setting.  Whence does the problem lie?  Is it an electrical one with the
     switch or, is the fan unit/heater unit nearing the end of its life?

            Thanks,
            Kridthp…@aol.com
    * Deja Moo: the feeling that you’ve heard this
      Bovine Scatology before.  

  2. admin says:

    Kridthplad wrote:
    > I would be highly interested in the response.  I’ve got an 89 Maxima, 181K
    >  miles, that has the same problem.  The blower will only work on the maximum
    >  setting.  Whence does the problem lie?  Is it an electrical one with the
    >  switch or, is the fan unit/heater unit nearing the end of its life?

    neither, on the max its the blower amplifier mounted to the bottom of the blower
    housing. sometimes though a old blower will start drawing too many amps and burn
    them up so just replacing the amp may not last too long and they are expencive.
    I would get whole blower unit used with amp to keep this from happening. on
    sentra either is amp also ,of it may have resistors. is just a coincidence that
    it quit working after you tightened belt. glad I didn’t tighten your belt  :-)

    >         Thanks,
    >         Kridthp…@aol.com
    > * Deja Moo: the feeling that you’ve heard this
    >   Bovine Scatology before.


    "186,000 miles per second isn’t just a good idea, it’s the law!"Einstein

  3. admin says:

    In article <19971022042000.AAA26…@ladder02.news.aol.com>, kridthp…@aol.com
    says…

    >I would be highly interested in the response.  I’ve got an 89 Maxima, 181K
    > miles, that has the same problem.  The blower will only work on the maximum
    > setting.  Whence does the problem lie?  Is it an electrical one with the
    > switch or, is the fan unit/heater unit nearing the end of its life?

    >        Thanks,
    >        Kridthp…@aol.com
    >* Deja Moo: the feeling that you’ve heard this
    >  Bovine Scatology before.  

    I have a 1987 Pulsar.  Same thing happened.  Had the repair
    people look at it and found something became disconnected
    around the switch.  Resoldered the connections and it worked
    fine again.  It seems to be a safety mechanism so you don’t
    lose complete use of the heater.  Hope this helps.

    Ed Smith

  4. admin says:

    There is probably a burnt out resistor pack that provides for the lower
    blower speeds.  Sorry, I’m not sure where it is on the Maxima.  Common
    locations are near the blower motor (sometimes there is a connector on the
    side of the air duct near the motor–the resistors themselves are inside
    the duct so they are cooled by the air stream) or else on the back side of
    the fan speed switch itself.

    In either case, replacing the resistor module should restore opperation of
    all blower speeds.  Shouldn’t be *too* expensive at the dealer, cheaper yet
    at the junk yard.

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