Not hot air thru the blower!

**jimmytarnat** · 21st April 2009, 15:33

Hey, been having a problem with the heater / blower in my 54 plate Signum, 2.0 DTI,
It has stopped blowing hot air through when i turn the heat dial up to hot.
i only get cold air, or with the air con on, even colder air!
its still blowing at all 4 different speeds, just no heat coming through.
Anyone got any ideas about what this could be? or any ways to fix it?
Cheers
Jimmy

**steve1975l** · 21st April 2009, 16:08

Air mixer motor.

**glynn** · 21st April 2009, 16:13

have you got pleanty of water in the expansion bottle

if you have then it might be the mixer motor or dail

**steve1975l** · 21st April 2009, 16:15

Good point about the coolant tank level, you need that for warm air.

**jimmytarnat** · 21st April 2009, 16:59

Yeah i've checked the level in the expansion bottle, its fine, guess its the mixer motor or dial then? any ideas about cost for that kind of thing?

**wardy** · 21st April 2009, 17:04

yes, just ordered one for mine (seems to be fairly common problem) £79 not fitted

Try to srip it down & clean all the cogs. Mine was finished so no option. Looks like about £2 worth TBH, bit of a rip off if you ask me.

**jimmytarnat** · 21st April 2009, 21:30

where is the mixer motor? so i can have a look at mine and see how it is,
cheers
Jimmy

**steve1975l** · 22nd April 2009, 07:53

£45 on Ebay. I have seen some 2nd hand ones on there for £20.
http://cgi.ebay.co.uk/GO-NEW-CAR-PAR...3A1|240%3A1318

Start by taking the glovebox out, it's on the right hand side from memory.

**jimmytarnat** · 30th April 2009, 18:54

So i decided to give it a go myself, took the glovebox out, found the little beggar! its smaller than i thought.
tried operating the heater controls to see if anything moved, and nothing happened.
i managed to get the servo motor off, it helps to move the ducting out of the way by releasing the torx holding it in place too.
Took it apart, and noticed that it looked like a tooth was missing on a cog, but i ralised that its supposed to be like that, as the range of movement means that it stops before it gets to that point, and mine had slipped so that it was stuck on the gap.
Anyway, sprayed a little WD40, put it back together and plugged it back in, all working fine!
Saved myself about £ 40 - 80 by having a go myself!

Just need a code reader now to find out why i'm getting the car and spanner symbol up!