Fixing my intermittent Blower

[Jehu]

So i've now noticed twice my heater A/C blower stops suddenly lately when i shut my drivers door as i am getting in.Its running>shut the door,ok slam it, > the blower cuts out. Can this tell anyone weather i need to replace the console controls, the blower motor or the black box(I don't have the sword!).

[spinnakr]

Had a similar problem,,with my 92 525i,after disassembly, it turned out to be the brushes in the blower motor,,,worn badly. Apparently sometimes making contact and sometimes not...Try disassembling and checking the motor...

[bbig119]

You won't have a sword, but it could be the resistor pack. I had intermittant blower problems which occurred when I tried to use any other blower speeds other than 4. I would get air(cold air since it was summer) for a short while then it would cut out for a couple minutes then come back again. Replacing this resistor pack fixed my problem. Sounds like your symptoms are a little different though.

[gale]

You won't have a sword, but it could be the resistor pack. I had intermittant blower problems which occurred when I tried to use any other blower speeds other than 4. I would get air(cold air since it was summer) for a short while then it would cut out for a couple minutes then come back again. Replacing this resistor pack fixed my problem. Sounds like your symptoms are a little different though.

Forgive my ignorance since mine has a sword, but do resistor packs have an analogous connector portion that could be susceptible to bad/cold solder joints like swords sometimes suffer from? If so, then it would be a simple DIY to reflow the solder -- worth a try.

[Jehu]

I am just hoping i can begin with replacing the right part and not end up replacing everything. I have an eversion to buying used parts of this nature as if mine have failed i have every reason to expect a similarly aged replacement has every bit as much of a chance of failing .

[Jehu]

Is this resistor pack the black box down near where the sword in other models is fitted,where i pulled it out to changed my microfilter or is it the Blue unit that resembles a relay under the driver's dash above the gas pedal?

[gale]

Is this resistor pack the black box down near where the sword in other models is fitted,where i pulled it out to changed my microfilter or is it the Blue unit that resembles a relay under the driver's dash above the gas pedal?

I'm guessing it's the black one. Have you checked Bruno's page?

http://www.bmwe34.net/e34main/mainte...ical/sword.htm

[Jehu]

Yah,I've checked the site.I know where that black control unit is ,i encountered it when changing the micro filter.The intermittent problem was present before i did that so i don't think i disturbed the connection there.I just thought mentioning that the blower shut off when i slammed my drivers door shut would ring a bell with someone and pinpoint the culprit.Obviously wishful thinking..