Hi there I've had this problem on both my old MK3 and my current MK2.

Especially during cold weather there is a screeching noise when I turn the blower on.

I'm guessing this must be common as I've had it in both cars and also heared from a friend who owned one of these cars that he had the same issue.

I think you'll find you have something blocking the fan, usually a leaf or something in my experience.

I just blasted the motor on mine with duck oil (smells better than WD40) not made a squeak in 2 years.

I'm certain it's caused by the heater motor bearings. Try a cheeky dab of oil on them, worse case you can swap the entire heater motor assembly for not much money for a better one.

yeah common that they wear ..I've found a blast of gt85 oil works best on mine

cool thanks. on my old MK3 it got to the point where only speed 3 worked. really trying to avoid this as its very annoying.

that would be the resistor not the motor, but a straining motor probably wont help

Its the little bar below the plug on the fan housing, new one from VW was about £30 and made more sense than getting ones from scrap yards.

The resistor is vulnerable to rain water, so keep your rain tray in place.

I re-greased my fan a few years back, did involve removing half the surround and wasn't an easy job - you wanna use GT85 as suggested above (unlike other lube sprays it smells alright).

where is the resistor located i have same problem with only setting 3 working?

Side of the fan, has a plug on it. If its old will be a corroded copper green in colour about 3inches long.

cheers, easy to replace?

once the main block connector is unplugged. 3 screws and a wire going to the motor.

English please lol, does that mean i have to take the heater out?

The English above is perfectly understandable.

No, you won't have to take the heater out to change the speed resistor.

i had this exact fault with my mk2f, the fan worked on 3 only so i changed the resistor, within a week the resistor went again so i put another new one in to see if the old one was faulty and that one went too, according to my dads friend (who works at a vw dealership) its the entire heater that needs changing as its just worn out basically

I raided the local scrappy and found 2, both lasted a week each. Went to VW, brand new one and that was 4 years ago.

The resistor itself isn't what blows. There's a small thermal fuse located on the resistor that goes open circuit if the fan starts to put load through the wiring, for instance, if the motor starts to seize up. A new thermal fuse from Maplins is like pence to replace and just requires soldering in place which is easy when you have removed the resistor from the fan unit.

I just blasted the motor on mine with duck oil (smells better than WD40) not made a squeak in 2 years.

under the scuttle?

Yep, the motor housing is on the battery side of the blower housing, just drown it with GT85, squirt it into the motor itself and any other hole in that area.

The resistor itself isn't what blows. There's a small thermal fuse located on the resistor that goes open circuit if the fan starts to put load through the wiring, for instance, if the motor starts to seize up. A new thermal fuse from Maplins is like pence to replace and just requires soldering in place which is easy when you have removed the resistor from the fan unit.

well there's two things that can happen. The resistor wire itself can corrode to the point where it breaks, in this case replacing the resistor with a new (2nd hand ones may or may not last five minutes) one will fix it for years to come.

The other thing is that something wrong with the motor can cause too high current draw which will blow the fuse steve mentions. Even replacing the fuse wont do much good, it wont last long, you need to fix whatever is causing the problem. It could be a knackered motor, it could be a bearing so worn that it is causing too much drag on the motor or it could be a short circuit or something. In any case, replacing the motor unit with a known-to-be-working 2nd hand one (or a new one if you can even buy new ones) will be the simplest fix.

I have a reesistor in full working order for sale if anyone is interested ?

How much would a new Heater Matrix/motor be?