Miata Mailing List: February 1997, Message #214
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From: (none) Subject: FW: Blower Date: (none)
The Miata does indeed have a resistor mounted next to the fan. I believe you could use a multitester to check if one the resistor taps are open. The resistor itself is a sealed ceramic unit. Hope this helps. Mo & Mi-T-Mo in KC, MO >---------- >From: Jim[SMTP:jmt455@pacbell.net] >Sent: Monday, February 03, 1997 3:12 PM >To: Multiple recipients of list >Subject: Re: Blower > >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 > > > >