Well I'm not having much luck with the Peugeot 107 community, so I thought I'd post on here to see if any of the Saab gurus might have an idea about what is going on :D
I have an intermittent issue with my heater aircon blower in my 2008 107. The heater and fan works initially when I get in the car on all fan speeds - heat works, and aircon blows cold. After a while the fan sometimes seems to slow down, or the speed fluctuates, and if I turn it off, then it doesn't always come back on.
The fact that when it works it works at different fan speeds would imply the resistor is OK. The fact the fan works at all would suggest the fuses are all OK.
So could it be I have some dodgy electrical connection somewhere, and where should I look? Could the fan speed switch on the centre console be on the way out?
I have sometimes heard some faint ticking when the fan is working as if something was caught in the fan, but this is rare, and is normally followed by the fan stopping. A while later, it will work again as normal!!!
I was concerned it might be the fan blower motor, which might set me back about £120 plus having to take off the top of the dash (which I'd rather not attempt, and my mechanic is none to keen either!!). But when the fan is working, it seems OK.
We had the fan running for quite a while yesterday at different speeds. Then at one point after we turned it off, it wouldn't turn on again!! A couple of minutes later, we could turn it on again!!!!
So any suggestions gratefully received.....
Things mentioned elsewhere are:
- A faulty blower motor/fan assembly (worn brushes)
- Faulty fuses
- A faulty control resistor
- A faulty regulator (?)
- A faulty relay
- Wiring/connection issues
So doing a couple of searches, a new blower unit is around £130, a resistor may be around £20, and a new control switch could be anywhere between £100 - £180 :o
My mechanic wanted us to try the switch first, as that doesn't involve dismantling the whole upper dash! I have trawled the net, and most parts places don't seem to sell this. The only one I found was on Ebay, a supposedly genuine new part, for around £100. Or, I can get the control panel which incorporates a switch (I think) removed from a newer car for more like £20 - £25.
Mulling over what to do - tempted to get the control panel out of the later car and try that first.
Steve, since you might be looking at a good couple of hundred ££ bill eventually, I suggest trying the latter option for around £25 from the newer car - it might do the job, but if it doesn't then at least it's only a small proportion of the eventual possible cost.
A switch is a swith. A relay is a switch. In theory you could check them by removing the wires from them and bridging the contacts. If things work, it's the switch or relay.
Does the blower work on full speed? If so, there's quirk of wiring that seems common on French cars. There's a diode in the feed that only allows current one way. It's there to stop current flowing back when the fan slows down when you switch it off. If the diode fails, the current by-passes the speed control. The French mechanic who fixed it just cut the diode out! Not sure that I have the operating description correct, but the fix is what was done. It was a while ago, so make have still been current when your Peugeot was built!!
well I used the car today and ran the fan on a/c for the first part of the journey, and on heat on the way back. The fan worked as if nothing was wrong, and when I turned it off, and turned it on again, it came on again. It worked on all fan speed settings, and seemed fine!!!!
Which would suggest, the resistor is fine, the blower motor is fine........
So I really have no idea what is going on!!!!!
Loose connection or failing switch contacts?
I think it must be looking like that. I ran the fan/heater all the way to work this morning, and again on the way home. And it worked fine. So the fan/blower must be OK.
I am wondering if there was something jamming the fan itself and stopping it from spinning? Either that or there is a temperamental loose connection somewhere.
Quick update on this - ever since my last post, I have been using the car to go to and from work, and deliberately running the heater/aircon fan at different speeds for the whole journey. It has been working fine ever since!!!!!!!!!!!!!
So I am not sure if there was something caught in the fan that was preventing it from it from spinning, that has now dropped out of the way?
Sounds like it was dirt/corrosion on the switch contacts, the regular movement has cleaned the contacts ?