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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 11-04-2012, 07:27 AM
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Krumchev2 Krumchev2 is offline
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Location: Easton, Pa
 
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Mein Auto: 91' 318ic
HVAC blower motor not working

First off I'd like to say hello to everyone again because I haven't been on here in awhile, so Hello everyone. But like the title says the blower motor stopped working (at any speed). If i take out the resistor and put it back in it will work again, but after driving it and then letting it sit for more than a half hour it won't work again. Any ideas?
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  #2  
Old 11-04-2012, 06:10 PM
anstead610 anstead610 is offline
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Location: Bethlehem, PA
 
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Mein Auto: 24v e30 -88 toyota pickup
I thought you got rid of your e30! Although, I have no idea what's wrong :-P
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This e30 is now being parted out. NO body panels are for sale, bumpers/fenders/hood/mirrors/valance or front turn signals. Everything else is up for grabs. Euro grills/cluster are sold, suspension/brakes/LSD/rear tails are already spoken for.
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  #3  
Old 11-04-2012, 06:38 PM
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fcsteve fcsteve is offline
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are the connections on the bottom of the resistor corroded at all ?

havn't you replaced that resistor twice now ?
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  #4  
Old 11-06-2012, 12:10 PM
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Krumchev2 Krumchev2 is offline
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yeah i've replaced the resistor twice now but the one I have in now seems to be fine, but even if the resistor was bad wouldn't it still work on 4?
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  #5  
Old 11-09-2012, 03:40 PM
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Unless the actual fan rotary switch is not operational?

Or a possible fuse break?
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  #6  
Old 11-10-2012, 10:27 PM
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Krumchev2 Krumchev2 is offline
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Quote:
Originally Posted by First time View Post
Unless the actual fan rotary switch is not operational?

Or a possible fuse break?
I'm pretty knowledgable about cars and the fuse was the first thing I checked. And I also jumped the switch and still nothing
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  #7  
Old 11-11-2012, 02:02 AM
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_Ethrty-Andy_ _Ethrty-Andy_ is offline
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Mein Auto: E34 Touring AC Schnitzer
possibly worn out wiring, its not uncommon, its exposed to moisture from your windscreen and potentially heater core if its starting to get perished, combined with fresh air and heat = corrosion.

the switch runs via a relay, it could be this that is dead. on a RHD car you will need to drop the drivers kick panel and you will see the relay there, on a LHD it may be you need to drop the glovebox, or maybe they relocate it to your drivers side, not sure of course as we dont have LHD here.
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  #8  
Old 11-28-2012, 08:26 PM
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Krumchev2 Krumchev2 is offline
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So I tried taking the blower motor out yesterday and cleaning it out thinking it might have been just dirt inside the motor. But when I put it back in, it worked on all 4 setting for the first time it ran, but once I turned it off to go into sears to replace a socket wrench I broke (only in there for like 10 minutes) it didn't turn back on again. I just don't get how it could work for alittle bit everytime I disconnect it but then stop working after I shut the car off
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  #9  
Old 11-28-2012, 08:35 PM
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hornhospital hornhospital is offline
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Brushes are worn out. Getting intermittent in their connections.

Sent from my MB860 using Bimmer App
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  #10  
Old 11-28-2012, 08:38 PM
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Krumchev2 Krumchev2 is offline
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Quote:
Originally Posted by hornhospital View Post
Brushes are worn out. Getting intermittent in their connections.

Sent from my MB860 using Bimmer App
So you're saying its the brushes inside the motor itself not always making contact?
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  #11  
Old 11-30-2012, 11:54 AM
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Krumchev2 Krumchev2 is offline
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So do I need a whole new blower motor?
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  #12  
Old 11-30-2012, 12:04 PM
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hornhospital hornhospital is offline
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Quote:
Originally Posted by Krumchev2 View Post
So you're saying its the brushes inside the motor itself not always making contact?
Correct. They are probably worn down to nubbins and the springs can no longer push them solidly against the commutator.

Quote:
Originally Posted by Krumchev2 View Post
So do I need a whole new blower motor?
Not necessarily. You may be able to replace just the brushes, or have an electric motor shop do it for you. They could determine if it's viable to rebuild the motor for a lot less than the cost of a motor. If it's shot, you're only out a few bucks. If it's salvageable, the repair should be MUCH less than a new motor.

You can DIY some of them if you can find brushes that fit. I've replaced blower brushes in GMs before, using alternator brushes, but I have yet to do a BMW blower.
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1995 318is "Bebe"; 1993 325is "Elvira" 1985 635CSi "Katja" 1984 633CSi "Sylvia"
HAVE I HAD MY MEDS YET?

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  #13  
Old 12-01-2012, 11:02 AM
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Newman271 Newman271 is offline
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Location: Cincinnati, OH
 
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From talking with J&N Auto Electric here in Cincinnati, these motors are not rebuildable. I went to my local U-Pull and Pay and found one for 6 bucks and put it in one and half years ago, it squeeks a little sometimes but works really well.
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