82 mirada heater blend switch

Interior and Electrical

  1. mopops

    mopops Well-Known Member

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    82 mirada with AC sliding blend switch lever -controls amount of heat-not working how do we fix this problem? trouble shoot--parts. thanks and happy holidays to all
     
  2. Aspen500

    Aspen500 Well-Known Member

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    ASSUMING the Mirada HVAC is the same or very similar to an F-body, my first guess is the control cable either came off at the control lever or at the heater box, or (and this is common), got kinked between the lever and the cable housing. Could also have the cable housing come detached from either end. Once bent, the cables never really work again, even if you try to straighten it out.
     
  3. mopops

    mopops Well-Known Member

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    not cable --electric
     
  4. Aspen500

    Aspen500 Well-Known Member

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    Well, you know what they say about assumption............:oops:
    All I can give you is that on newer vehicle's (like 2000's and up), 95% of the time the temp can't be controlled (or the mode), it's the door actuator (motor). Very rarely is it a problem with the controls.

    You know which actuator motor goes bad? If there's 5 of them on the HVAC plenum, and 4 are fairly accessible, it WILL be the one you have to take the whole instrument panel out to change. I blame that darn Murphy:p
     
  5. volare 77

    volare 77 Well-Known Member

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    can you post a pic of the heater control?
     
  6. mopops

    mopops Well-Known Member

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  7. AJ/FormS

    AJ/FormS Well-Known Member

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    IDK if this will help;

    My Dad had an 84 FifthAvenue ,that had that problem, and when it started, simultaneously was heard a constant tic-tic-tic from deep inside the dash. It turns out both were related. I took out the glove box, and some otherchit and found, on top of the heater box ,was an electrically controlled gear box going tic-tic-tic-tic continuously. It had stripped it's gears trying to move the stuck door it was attached to. I think that mightabin the blend door. Anyway, I removed the gearbox, manually unstuck the door, put it where I estimated I wanted it to be for full heat(it was late fall), re-positioned the gearbox to match, screwed it back on, and left the device unplugged.That worked for the long Manitoba winter.
     
  8. mopops

    mopops Well-Known Member

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    can 't get good pic of switch wil try to get it out
     
  9. mopops

    mopops Well-Known Member

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    thanks i will try to take out glove box i don't hear the clicking but your help gets me closer to the door thanks happy holidays
     
  10. AJ/FormS

    AJ/FormS Well-Known Member

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    In Dad's car, it, was pretty tight for room above the device, to remove the fasteners. I used a special ratchet that works different from the normal ones. Instead of ratcheting the handle in the usual way, you spin the stationary handle, which turns the head. It's pretty slick and has got me out of quite a few jams. It was a gift to me from my son, a lotta years ago..
     
  11. mopops

    mopops Well-Known Member

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    got one from my son long time ago i forget i own it
     
  12. MiradaMegacab

    MiradaMegacab Well-Known Member

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    2A07AD35-58D0-4943-8406-2DAD1F8BD86E.jpeg
    That would be “ATC”
     
  13. Rustyroger

    Rustyroger Well-Known Member

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    I bought a Craftsman twist handle ratchet maybe 9 years ago. Invaluable working in tight spaces!.

    Roger.