Question about 1984 Nissan 300ZX

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Heater suddenly stopped working

My switches are good,my thermastat is 2 years old(it is a low temp)is there a heater bypass that im missing

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  • ericpearce Dec 30, 2008

    the blower is fine (i would mention something like that),i replaced the themastat today,the only question is, do you know if there is a heater bypass valve?

  • leprechaun4u May 11, 2010

    Does the fam blower work??? Or is the air just not hot??

  • M M Nov 13, 2016

    What may have happened is the mechanichal switch for the heater core may have died.. this can be bypassed, which would mean your heater core will always be on. Which is great if you live in a colder climate range like me. :-D

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I don't know if there is a bypass valve but the heater core could be all clogged up not letting water flow through it.

Posted on Dec 31, 2008

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