High pitch noise when heaters are on.

[kitch]

When I use the heater in my car on number 1 or 2 it makes a really annoying high pitch noise. Not a squeal, almost similar to a rattle. I had a quick look in the wiki but couldn't find anything like this. Could it just be that the motor needs lubricating?

Cheers

[capnmchl]

Mine does the same thing, until I hit a bump or go round a corner. Then the pitch will change, or go away. I put it down to the bushing in the motor being a bit worn and making slop in the system, which makes the squeaking. So I think the motor just need lubricating.

[billgatese30]

Mine is the same, but only on setting 1 when the temperature outside drops into the minus figures. Its ok otherwise. I am going to take a look when the whether gets a bit warmer. Its not causing enough of a problem at the moment and nuts to working on the car in the cold for a non emergency.

[BATTS91]

Mine does the same , itll be coming out and greasing up and bearings checked me thinks

[jonny323i]

Mine does the same its usually the mrs moaning its too hot or something else minor iv done wrong

[polsta]

Mine does the same , itll be coming out and greasing up and bearings checked me thinks

is there a guide how do do this ? be a good idea to do mine while dash is out

[capnmchl]

Mine is the same, but only on setting 1 when the temperature outside drops into the minus figures. Its ok otherwise. I am going to take a look when the whether gets a bit warmer. Its not causing enough of a problem at the moment and nuts to working on the car in the cold for a non emergency.

If mine does it on one setting, usually changing it makes it go away for a bit.

It also does something weird were it won't work at all, until you turn it up to four and leave it on that for a few seconds. Then it'll work on all the settings.

[Brianmoooore]

Mine does the same , itll be coming out and greasing up and bearings checked me thinks

is there a guide how do do this ? be a good idea to do mine while dash is out

Having the dash out is not relevant - the fan motor is under the bonnet. I've posted lots of times on here how to lubricate the fan motor, and I think it's in the wiki as well.

[Brianmoooore]

Could it just be that the motor needs lubricating?

Yes; about ten years ago.

[peeweemad]

http://www.e30zone.net/e30zonewiki/inde ... nly_on_Max

There's the link to the wiki, the info on how to get to and remove the fan is down the page. I've used it and its spot on.

HTH