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View Full Version : A/C: I don't believe it!

Trevor
13-08-04, 10:54 AM
Been having some problems lately with the air-con on my NA - like it would work for about 15 minutes after the car was started and then fade away. Thought I would have to get it re-gassed, but decided to try the solder fix on the A/C controls PCB before shelling out around £100.

Having dismantled it, I inspected the solder joints and couldn't see anything wrong but decided that as I'd made the effort to get it out, I might as well apply a soldering iron to the joints. Put everything back together and voila, nearly froze my fingers off on the journey to work.

Excellent tip whoever first posted it. :cool:
nigel w
13-08-04, 01:13 PM
That was me!!!! :)
Woo Hoo - i'm feeling useful :)
Glad it now works, trevor

Oh, and if anyone wants any spares from the AC controls send me a PM i've got a bag full
Stuart B
13-08-04, 01:16 PM
what exactly is this tip then, my ac doesn't work...the light comes on but thats it

Stu
nigel w
13-08-04, 01:22 PM
Resolder the solder joints of the big socket on the AC controls.
Stuart B
13-08-04, 02:50 PM
Resolder the solder joints of the big socket on the AC controls.

how easy is it to pull the controls out...still new to supras.

Stu :)
Karma Supra
13-08-04, 03:09 PM
Mine all works apart from fan speed setting 1.

I also have a bulb out adn toyota can;t get me another one :rant:
adi
13-08-04, 03:16 PM
those bulbs are a pain... you cant get them anywhere.

You have to buy a similar one, and solder it onto the posts which the old one sit on.. and point it into the hole.
Lofty
13-08-04, 03:58 PM
Sorry to be picky, but I am going to claim as being the first recorded case of finding and fixing the dry-joints on the back of the heater control unless anyone else case find an earlier (http://www.smartgroups.com/message/viewdiscussion.cfm?gid=108882&messageid=44770) example. :happy3:

I also managed to find some light bulbs that are a direct fit replacement for the heater control at the time. I can check again if anyone is still interested. I might even have 1 or 2 left.
Lofty
13-08-04, 05:12 PM
what exactly is this tip then, my ac doesn't work...the light comes on but thats it

Stu
Does your blower fan work? If the fan is working but still no AC then you may need to get your AC system re-gassed (there are other threads on the BBS about this). The system will not operate if the gas pressure is too low. Otherwise an electrical fault or compressor fault is likely. A dry joint is a hairline crack in the solder where the leg of a component pokes through the PCB. You may need to look very closely to see it. It's easy to get the controls out.
Lofty
13-08-04, 05:14 PM
Mine all works apart from fan speed setting 1.
Resistor pack under the glovebox on a UK car. There are other threads about this on here too.
Stuart B
13-08-04, 05:16 PM
Does your blower fan work? If the fan is working but still no AC then you may need to get your AC system re-gassed (there are other threads on the BBS about this). The system will not operate if the gas pressure is too low. Otherwise an electrical fault or compressor fault is likely. A dry joint is a hairline crack in the solder where the leg of a component pokes through the PCB. You may need to look very closely to see it. It's easy to get the controls out.

Hi bud, yeah the fan works just fine. I thought It might need gassing at first, but saw this and wondered. I am gonna get it checked afater i get back off my hols.

Stu
nigel w
13-08-04, 05:22 PM
Cheers bud, now i know how robert scott felt when he got to the south pole to find that he'd been beaten! :crybaby:

Granted, you got there first lofty, i didn't even own a supra in 2002.

Similarly, i've also got a few of those little bulbs hanging around - you can get 'em, just not in halfrauds.
Lofty
13-08-04, 05:32 PM
Cheers bud, now i know how robert scott felt when he got to the south pole to find that he'd been beaten! :crybaby:

Granted, you got there first lofty, i didn't even own a supra in 2002.

Similarly, i've also got a few of those little bulbs hanging around - you can get 'em, just not in halfrauds.
He He. Sorry to steal your thunder but I can remember how pleased I was at the time when I worked it out. If you notice from the times, I posted the problem at around 7PM, went away and spent about 2 hours pissing about taking my dash apart, found and fixed the problem at about the 3rd dis-assembly, and then posted my success at about 9.30PM. Simple things please simple minds, as they say. Those tiny green condoms are great, arn't they?
Bryank
15-08-04, 05:01 PM
Maplins do the bulbs too: part number WQ13P .. priced at about 70p (I don't have any bulbs out so not tried them myself)
Finfon
15-08-04, 05:33 PM
my air con doesnt work either the fan comes on but it doesnt go cold :no: should the engine speed drop when the air con kicks in?
black 86 supra
15-08-04, 10:12 PM
my air con doesnt work either the fan comes on but it doesnt go cold :no: should the engine speed drop when the air con kicks in?

no, funny enough it rises to approx 1200rpm
TurboChick
16-08-04, 11:47 AM
Mine all works apart from fan speed setting 1.

Ditto with ours, as I discovered yesterday!
Lofty
16-08-04, 11:53 AM
Ditto with ours, as I discovered yesterday!
check this (http://www.supras.com/04/resources/index.php?id=56&q=fan) out.
imoyes
16-08-04, 02:35 PM
check this (http://www.supras.com/04/resources/index.php?id=56&q=fan) out.

I don't like to brag, but:

http://www.forum.mkiiisupra.net/showthread.php?t=1685

:)
Lofty
16-08-04, 02:45 PM
Well found Ian. I didn't include your thread because it didn't have details of how to locate the resistors, etc, plus I mentioned that we already had threads on our BBS and I expected people to have searched for those. Yours is certainly an easier method of repair, although my solution was far simpler -

I went to Toyota and bought a new one! :duck:
imoyes
16-08-04, 02:49 PM
I went to Toyota and bought a new one! :duck:

How much was it? :banghead:
Lofty
16-08-04, 02:56 PM
How much was it?

Part Number: 87138-24030 - Resistor, heater

28th March 2002 it was £29.07 including VAT.
Finfon
16-08-04, 05:53 PM
no, funny enough it rises to approx 1200rpm
ah on my dads sierra the revs drop and the engine note deepens well it used to i knackered the compressor the other day :) my revs stay exactly the same :crybaby:
black 86 supra
16-08-04, 05:54 PM
ah on my dads sierra the revs drop and the engine note deepens well it used to i knackered the compressor the other day :) my revs stay exactly the same :crybaby:

yep thats right, many cars do drop the revs, as did my Granada's
TurboChick
17-08-04, 10:19 AM
Cheers for the links guys, looks like another job to sort out once the blasted master cylinder for the clutch is replaced!
imoyes
17-08-04, 10:36 AM
Part Number: 87138-24030 - Resistor, heater

28th March 2002 it was £29.07 including VAT.

Mine was 78p for a 2 Ohm 10W resistor, from the local electronics component shop. :) RS components do them and Maplin.

BUT, it's a fiddly job and you need to be able to solder. :)