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Non-AC vs. A/C blower motors

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  • janice212
    replied
    Thank you for the information, mine just died a few days back and i thought it was a huge job to fix it :D

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  • Heitzke
    replied
    Well timed thread response. Got new resistor in and damn thing still didn't work. My old resistor was pretty hammered, but still functional, but i'm glad to remove that as a variable moving forward.

    After it didn't work, I spun the motor by hand back a few times and motor suddenly sprung into full-speed action (scary as fuck, basically). Maybe a brush burned itself to the stator and stopped the motor; hence my burning smell. Spinning it around by hand must have gotten things back in line.

    I also have to assume that this will happen again and/or the used motor is going to die. C'est la vie, i'll just replace it with a new schmiedmann when that day comes.

    Originally posted by Intense View Post
    Slight thread-hack:

    I just realized my blower only works on the high (4) setting. I seem to remember (from years ago) this is a relatively common issue with e30s. Can anyone shed some light on this problem?
    Usually points to a bad/dirty resistor. Are you a/c or non-a/c?

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  • Intense
    replied
    Slight thread-hack:

    I just realized my blower only works on the high (4) setting. I seem to remember (from years ago) this is a relatively common issue with e30s. Can anyone shed some light on this problem?

    Leave a comment:


  • Heitzke
    replied
    Yeah unfortunately different. Just ordered another BMW one this afternoon, should have it here in a few days now.

    Hopefully get a chance to test out the motor here tonight, otherwise I have a big 'ol Schmiedmann list put together to order. (somehow this thread is turning into a build thread)

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  • Shftr8
    replied
    I just look and no they are different.

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  • Shftr8
    replied
    do you know if the resistors are the same as an A/C car??

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  • Heitzke
    replied
    Resistor is accessible through the drivers side floor area, underneath the dash. It's really hard to see it, so I ended up just pushing it from the blower motor access panel and down into the cabin. Resistor looks pretty haggard, haven't tested the motor itself yet.

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  • Shftr8
    replied
    I will try to find out about the resistor. I run a shop and one of my techs is the one tackling the task and its been awhile since we were able to work on it. and it may be in a different location on the box which we just completely pulled out and tossed to the side somewhere. holding off on the rest of the wiring until andrew makes me a harness for the motor swap in case something might be different.

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  • Heitzke
    replied
    Originally posted by Shftr8 View Post
    The A/C box is different but will swap in just fine if you were to add it. Although I dont have everything working at the moment (middle of a motor swap) The A/C box is in place and everything lines up and the dash is back in as well. Now its just a matter of wiring and I will finally have A/C in my touring. Im in Florida and its definitely a requirement of mine

    And yes it seems like the resistor may be the problem. Cheap and pretty easy fix although you may need another blower motor
    Nice, that's good to know. Since you're torn into it a bit you may know before I try, the resistor for non-a/c is allegedly accessed from underneath the dash area on the driver side?

    Guess i'll check resistor first, and then use a fused-jumper to see if the motor burned up too
    Last edited by Heitzke; 05-11-2016, 02:55 PM.

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  • Intense
    replied
    Originally posted by Shftr8 View Post
    The A/C box is different but will swap in just fine if you were to add it. Although I dont have everything working at the moment (middle of a motor swap) The A/C box is in place and everything lines up and the dash is back in as well. Now its just a matter of wiring and I will finally have A/C in my touring. Im in Florida and its definitely a requirement of mine

    And yes it seems like the resistor may be the problem. Cheap and pretty easy fix although you may need another blower motor

    I'm in Charlotte, so I (kinda) feel your pain about lack of AC. This will be my first summer with the car, we'll see how well (or not) I survive.

    I have a feeling adding AC might be a project this winter...

    Leave a comment:


  • Shftr8
    replied
    The A/C box is different but will swap in just fine if you were to add it. Although I dont have everything working at the moment (middle of a motor swap) The A/C box is in place and everything lines up and the dash is back in as well. Now its just a matter of wiring and I will finally have A/C in my touring. Im in Florida and its definitely a requirement of mine

    And yes it seems like the resistor may be the problem. Cheap and pretty easy fix although you may need another blower motor

    Leave a comment:


  • Heitzke
    replied
    Originally posted by Intense View Post
    Interesting...are you adding AC to your Touring? Hence the blower motor swap?

    Is the swap required to add AC to our cars? Personally, I don't understand how a blower motor (and cage) would be AC (or non-AC) specific.
    It doesn't help that photobucket appears to be down right now, lol. I probably didn't explain what I was doing very clearly.

    The blower motor in my car never worked since I picked it up, so I purchased a random E30 blower motor since I assumed they were all the same, but turns out our non-a/c cars have very different components.

    Don't have any plans to add a/c to the car, but the non-a/c unit is much less sealed up than the a/c components. Not exactly sure what all the a/c pieces look like besides the blower setup, but the blower I have is very open and unsealed in comparison. I have to assume the a/c unit is more efficient at moving air through the vents

    edit: as I type this, my blower motor is no longer working haha. Motor suddenly stopped, had a quick blast of a burning smell and now no movement from anything. I have to assume the transistor torched, but that's to be seen :facepalm:

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  • Intense
    replied
    Interesting...are you adding AC to your Touring? Hence the blower motor swap?

    Is the swap required to add AC to our cars? Personally, I don't understand how a blower motor (and cage) would be AC (or non-AC) specific.

    Leave a comment:


  • Shftr8
    replied
    The mercedes r107 SL's used the same blower motor as the e21 but the fan blades were a different spacing which gave them different part numbers. Check the Bosch number stamped into the motor itself. Should start with 0130 or something

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  • Heitzke
    replied
    Originally posted by Shftr8 View Post
    it looks like a E21 blower motor from the pictures
    That's interesting, i'll have to check the part #'s today

    edit: part numbers are different, but they do look similar. FWIW, http://www.schmiedmann.com/641113737...y-as-used.aspx has them cheaper than what I paid and also shows a parts cross-reference to Z3's also using the same motor.

    Quick search on US ebay for Z3 shows a lot of blowers that look similar to the a/c E30 piece
    Last edited by Heitzke; 05-06-2016, 07:39 AM.

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