Miata Mailing List: February 1997, Message #208
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   From: (none)

Subject: Re: Blower

   Date: (none)



At 12:30 AM 2/3/97 -0500, you wrote:

>Hey all,

>   I've got a problem with the heater blower in Baby..  The three lower

>speeds have died with only full blast working...  Anyone have any clues

>or suggestions on cheap fixes to this problem...

>   Btw, baby is a 90 model..  thanks in advance...

>

>Rob & Baby

>-- 

>

>

>90 Miata B/S 96

>

>

>Check out the Southern West Virginia Region of the SCCA...

> http://access.mountain.net/~robk

>

>

>



I had a problem similar in my wife's Toyota, the first speed went out on the

blower, but the other speeds worked.  The problem was that the resistor for

the first speed went bad.  If the Miata's is like it (I've never needed to

look) then four wires will come off the blower switch on the dash.  Three of

the wires will go to a resistor assembly, the fourth directly to the blower

motor.  The resistor assembly will have three sets of coiled wires inside of

different thickness.  First position will run through all three resistors,

second through only two, etc...  It sound like the third resistor broke

causing the first three settings to stop working. The Toyota's was mounted

to the heating box under the dash to take advantage of moving air to keep it

cool.



I could be wrong on the design, but I would expect Mazda to use a similar

type setup.  



I hope this helps.





Jim Tipton



94 Laguna Blue, Tan Interior