cold air blower (broken)

[davidd]

The cold air fan on the cerbera has packed up (note this is not aircon).
I press the switch on the dash, I can hear a clunk from a solenoid or something in the passenger footwell, then nothing.

The warm air system is fine.

Anyone got any ideas where I should start looking?

Thanks

David

[andy4200]

I didn't realise the cars were built with a cold air option.

sorry, i know i'm not helping

[davidd]

Now I'm getting p*ssed off, the wipers have also decided to pack up, nothing, even when I lift them off the screen they do nothing.

These things have to be related, I have checkef the fuses (no time to do anything else so far) what should I check next?

Come on people I need some help!

D

[olly]

I thought the "clunk" only happend when the AC was turned on ?

The cold fan switch is just a switch & doesn't need a relay (as far as I know)...... ?????

[davidd]

Olly

Thanks, I know the clunk you mean, this is a different clunk, more like a relay, a click if you like

D

[gazzab]

the switch controls the fan and I wouldnt describe the temp as cold that comes out if you dont have aircon. suggest it is just summer !

[davidd]

I press the switch the fan does not come on, I know the air will hardly be cold but some air would be good (yes the windows do work).

D

[gazzab]

but you said warm is fine? It is the same fan I think. They struggle to find cold air in the heat of that engine compartment and on summer months.

[davidd]

Different fans

D

[cruty]

Had a similar problem with my heater blower. when turning on, i would get a clonk from the passenger wing.After a few hours of getting to the fan (not a nice job), it was evident that the casing, which surronds the fan had become dislodged & was stopping the fan itself from moving - hence the clonking noise i got when the motor would initially kick in, only for the fan to be stopped by the casing. Once i had removed & re-fitted the casing & ensured the fan spun freely all was ok.
A word of warning, don't leave the fan on, before you have cured the problem as you will burn out the triacs on your heater controller PCB. One way of testing the fan is locating the two wires comming from the fan motor (they come from under the trim, at the top and fixed to the chassis rail running right to left (drivers side for cold fan))One wire is live & the other is earth, find the earth and make up a tempoary loom which connects the earth to the chassis - the fan should then start. If not you know you have a duff motor or if it does there's an error between the controller & motor.
In terms of the wiper motor, the only thing i can think of is that they may share the same common earth point, which may have came lose. Have you tried powering the wiper motor directly? at least that way you can tell if its the wiper motor or the loom/control.

Good Luck

Cruty

[davidd]

Ah this is getting better, where is the fan located? One problem I do have is that I have no idea if the switch is in the on position or not!

Any ideas how I find out ?

Thanks

D

[cruty]

The cold air fan is located in the drivers side wing. It is accesible through the interior trim, next to your right knee as your sitting there. You will need to remove the carpet and insulation. From there you will have a solid glass fibre pannel held in by around 8 screws. Once this is removed you will see the motor and a black plastic fan case, which are both attached to an aluminum air box. From here i would examine the casing and see if all is ok. If not remove and re-fit. If all looks ok i would then as i said before locate the earth lead comming from the motor (theres two leads going to a connector) and attach a tempoary lead from the chassis to the back of the connector (earth side) this should operate the fan if i remeber correctly.
I'm not to sure how you can tell if the fan controller is on or off, without using a multi-meter and testing the voltages going into and out of the control box. The only thing you can do is listen out for the clonk when switching on or off i.e when you here the clonk you know the fan is on and vica versa.

Hope this helps

cruty

[davidd]

Ah, all fixed. A fuse!
It seems that my fans and wipers and on the same fuse, number 18. Which is odd as that is supposed to be the heater fans and not the wipers which should be on 16!

Oh well all working now

D

[olly]

I always check all the fuses when something goes - I never trust what the handbook to be correct (even my wife's old POlo hand book was wrong for the fuses !)

Good news it's fixed though !

[davidd]

Yes I usually try te fuses, I had checked the supposedly correct one yesterday but decided to pull them all just in case. Flippin cars, you've got to love them

Just need to get round to sorting the lazy wiper motor out now.

D