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Heater blower only works on No4?

Posted: Thu Aug 21, 2008 10:43 pm
by Porky
I've owned a good few Golfs in the past (im a VW nut with my E30 as a daily) and this is usually caused by the resistor inside the blower motor. Quick and simple fix.

Is this the case with E30s or is it something more complicated?

Thanks :D

Re: Heater blower only works on No4?

Posted: Thu Aug 21, 2008 11:32 pm
by Omi
Same, but resistor is behind the dash, seperate to the blower motor. - Chris-W keeps a stock of these, IIRC.

Re: Heater blower only works on No4?

Posted: Fri Aug 22, 2008 12:05 am
by SPADGE
I also have heater fan resistors if required

Re: Heater blower only works on No4?

Posted: Fri Aug 22, 2008 12:08 am
by Porky
Where abouts is it located?

Re: Heater blower only works on No4?

Posted: Fri Aug 22, 2008 8:20 am
by Chris-W
Most commonly accessible inside the glovebox, right hand side, by the heater valve.

Image

Re: Heater blower only works on No4?

Posted: Sat Aug 23, 2008 8:00 pm
by Porky
Thanks people :) How much is a new one?

Re: Heater blower only works on No4?

Posted: Sun Aug 24, 2008 12:21 am
by Brianmoooore
Porky wrote:Thanks people :) How much is a new one?
zimmerbimmer1 will help you out there, but there's plenty of second hand ones about.
Check the fan motor isn't partly seized before you replace it.

Re: Heater blower only works on No4?

Posted: Mon Aug 25, 2008 6:38 am
by paris
Brianmoooore wrote:
Porky wrote:Thanks people :) How much is a new one?
zimmerbimmer1 will help you out there, but there's plenty of second hand ones about.
Check the fan motor isn't partly seized before you replace it.
Mine doesn't work at stage 1 and 2. If I put it to stage 3 or 4 it works. If I go from stage 3 or 4 to the slow 1 or 2, then they all work. Seized motor I guess?

Re: Heater blower only works on No4?

Posted: Mon Aug 25, 2008 9:49 am
by Brianmoooore
paris wrote:Seized motor I guess?
you have it in one!
If it's not too far gone, it can respond to an oiling session.
To do this effectively, you have to remove the motor completely, and have an external power supply available that you can hook it up to.
Get some light oil onto the bearings, and work it in by moving the motor shaft sideways as far as it will move several times, then run the motor with the shaft vertical, to encourage the oil right into the bearings.
Repeat several times, and you may get another fifeteen years out of it!

Re: Heater blower only works on No4?

Posted: Mon Aug 25, 2008 10:05 pm
by ProToZyKo
Mine only works at 3 and 4 :S But i think my problem is the resistor, but sometimes it makes a loud sound :S it shakes the car a bit, can this be fixed?

Re: Heater blower only works on No4?

Posted: Tue Aug 26, 2008 7:28 am
by paris
Brianmoooore wrote:
paris wrote:Seized motor I guess?
you have it in one!
If it's not too far gone, it can respond to an oiling session.
To do this effectively, you have to remove the motor completely, and have an external power supply available that you can hook it up to.
Get some light oil onto the bearings, and work it in by moving the motor shaft sideways as far as it will move several times, then run the motor with the shaft vertical, to encourage the oil right into the bearings.
Repeat several times, and you may get another fifeteen years out of it!
Thanks! I'll do that. I also have a spare blower motor from my E46, the only thing different is the blade design from what I see. Are the blades removable from the E30 fan or are they balanced and pressed on the motor shaft?

Re: Heater blower only works on No4?

Posted: Tue Aug 26, 2008 9:27 am
by Brianmoooore
The motor and fans are only supplied by BMW as a complete assembly, so they're not intended to come apart.
I can't say that I've ever tried to seperate them, TBH.

Re: Heater blower only works on No4?

Posted: Tue Aug 26, 2008 1:33 pm
by tom_johnston
any1 got a guide to remove the blower as think mines siezed too.

Re: Heater blower only works on No4?

Posted: Tue Aug 26, 2008 1:52 pm
by Brianmoooore
Remove large steel panel at the back of the engine bay (four self tappers). Depending on model, you may have to unclip some wiring and wiring covers, etc, first.
Remove the top halve of the plastic 'snail shell' fan covers, remove the two wires from the motor, then unhook the large spring clip that holds the motor. This last bit takes a bit longer to do, than say!

Re: Heater blower only works on No4?

Posted: Tue Aug 26, 2008 5:41 pm
by Omi
Any tips on putting these back together so the fan runs without fouling on the impeller covers? - Getting sick of mine! :D

Re: Heater blower only works on No4?

Posted: Sun Aug 31, 2008 6:01 pm
by Porky
Arse went to do this today and the pic has gone :( Anyone got a pic of the resistor so i know what im looking for?