Question about 1991 Mazda Navajo
When your blower motor relay (resistor) goes out, it's a good time to drop the blower motor assembly and check for any obstructions in the fan cage (looks like a hamster wheel). Some examples I've come across in the shop over the years include: leaves, twigs, huge amounts of cotton stuffing that mice have dragged in, and once the actual deceased mouse. Those things overwork/overheat the draw and can pop the resistor in a heart beat.
Also, if there are no obvious obstructions, it could be that the blower motor has too much resistance and needs to be replaced simply due to age/long-term usage.
Looking around online the blower motor resistors seem to run $25-$35 and the replacement motor assembly with fan cage is around $60. If there isn't anything stuck in the fan cage, I'd replace both items.
Please let me know how you make out.
Posted on Mar 22, 2011
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Posted on Jan 02, 2017
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