Need help locating an part.

[Uncle_Ken]

I don't believe BMC's luck, that black cat is back. The aircon wont turn off.
I assume its the pic below that gone, but where is it in the fan system? Remember its a 1999 Fairmont. I had a look at the wreakers today but could find/see it.


UK

[needaXYGT]

Post edit. Read your post incorrectly.

[aussiblue]

You need a new Motorola transistor (Motorola 2N5686 - Ford used to own Motorola) for your fan speed controller. World Wide Electronics have them http://members.iinet.net.au/~worcom/. See this thread (both pages) and the associated links for how to repair it: http://www.fordforums.com.au/showthread.php?t=11319441

[superroo]

Silver box which is behind the glovebox.
Yes it is a bastard to get to, but it can be done without breaking anything.
The main A/C or HVAC fuse in the engine compartment will turn the fan off until you replace the transistor.

[Uncle_Ken]

Originally Posted by superroo

Silver box which is behind the glovebox.
Yes it is a bastard to get to, but it can be done without breaking anything.
The main A/C or HVAC fuse in the engine compartment will turn the fan off until you replace the transistor.

image

image

Thanks this is what I was looking for.
UK

[aussiblue]

Note most second hand ones will also have a rusted failed transistor so it usually best to replace that and take measures to stop that happening again. If you do buy one from a wrecker make sure there is no rust (or evidence of past rust) on that transistor case (marked 2N5685 in your pic) . If there is rust, it has shorted and will be dead. Note there are three screws holding the fan speed controller (shiny metal box) in place and the one closest to firewall can be hard to find. You have to wriggle the box and pull it gently to get it out. Also put the vacuum cleaner nozzle in the hole where the box fits to vacuum out all the leaves and debris that collects in there rusting out both the transistor casing and the heater box.

[Uncle_Ken]

Originally Posted by aussiblue

You need a new Motorola transistor (Motorola 2N5686 - Ford used to own Motorola) for your fan speed controller. World Wide Electronics have them http://members.iinet.net.au/~worcom/. See this thread (both pages) and the associated links for how to repair it: http://www.fordforums.com.au/showthread.php?t=11319441

Thanks Aussiblue, I had found the threads and read them, they will be a big help.
UK

[Uncle_Ken]

Originally Posted by aussiblue

Note most second hand ones will also have a rusted failed transistor so it usually best to replace that and take measures to stop that happening again. If you do buy one from a wrecker make sure there is no rust (or evidence of past rust) on that transistor case (marked 2N5685 in your pic) . If there is rust, it has shorted and will be dead. Note there are three screws holding the fan speed controller (shiny metal box) in place and the one closest to firewall can be hard to find. You have to wriggle the box and pull it gently to get it out. Also put the vacuum cleaner nozzle in the hole where the box fits to vacuum out all the leaves and debris that collects in there rusting out both the transistor casing and the heater box.

Was looking at the wreaker to 'practice' without damaging mine . You never know might get lucky. Are they all the same for Series I, II and III? (and BA ?)
UK

[aussiblue]

No after AU they went to an integrated HVAC system. And as indicated at the end of that thread a few have a Bosch blower module rather than the transistor based circuit.

[Uncle_Ken]

Bugger... Thanks for the info, got to love our forum
UK

[Uncle_Ken]

Update... Replaced with one from the wreakers in good nic, all good all working. If I get time will right up what I did with pics, thanks to everyone for their replies.

UK and BMC