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A/c gurus help
https://auszookers.com/forum/viewtopic.php?f=5&t=17581		 Page 1 of 1
Author:  inbits [ Fri Dec 17, 2010 8:57 am ]
Post subject:  A/c gurus help
Hey guys my vitaras a/c is playing up.
It is intermittent it works probably 30% of the time and it's nice and cold and the other 70% percent it's cool but does stuff all
When it's raining and fogging up.

Any clues on what is wrong?

Cheers
Author:  89_tintop [ Fri Dec 17, 2010 9:21 am ]
Post subject:  Re: A/c gurus help
when it is playing up, is the a/c clutch on the compressor kicking in?
Author:  BJPK [ Fri Dec 17, 2010 9:21 am ]
Post subject:  Re: A/c gurus help
is the compressor kicking in and out? when its not cooling?
is it under or over gassed?
Author:  inbits [ Fri Dec 17, 2010 9:37 am ]
Post subject:  Re: A/c gurus help
May be under gassed I haven't checked the clutch will do that

Will a loose belt cause this it has squealed a couple of times when wet but that's it
Author:  steak_knife [ Fri Dec 17, 2010 10:29 am ]
Post subject:  Re: A/c gurus help
inbits wrote:
May be under gassed I haven't checked the clutch will do that

Will a loose belt cause this it has squealed a couple of times when wet but that's it

Belt's have to be tight, but don't think that's the problem, may have a slight leak, get it re-gasses with dye in it & see how it goes, it may last another 2 yr's before it need's topping up again..
Author:  MacDaddy [ Fri Dec 17, 2010 4:58 pm ]
Post subject:  Re: A/c gurus help
steak_knife wrote:
inbits wrote:
May be under gassed I haven't checked the clutch will do that

Will a loose belt cause this it has squealed a couple of times when wet but that's it

Belt's have to be tight, but don't think that's the problem, may have a slight leak, get it re-gasses with dye in it & see how it goes, it may last another 2 yr's before it need's topping up again..


X 2
I would say its low on gas... if you have been using it fairly regularly, and it has taken a while to get this way, its a slow leak, if its suddenly done this, possibility is high its a bigger leak... if you have just started using it, its probably a slow leak... its a good idea, if you havnt used your a/c for a while, like in Autumn or winter, to run it for a little while every few weeks, to keep the seals oiled, that way they dont shrink, and let gas out, older a/c's have more of this kind of problem... :D
Author:  ajsr [ Fri Dec 17, 2010 9:12 pm ]
Post subject:  Re: A/c gurus help
you can test to see if its the high low gas switch cutting it out by jumping a + power supply to the compressor clutch,causing it to run allthe time.

here are many things that will cause it to drop in and out.
low gas
high gas pressure (getting too hot)
fans not kicking in
belts loose (most likely)
condensor blocked by shit
thermostat needs adjusting.
check the belt is tight and the condensor is clean and the fan if fitted works first
Author:  inbits [ Sat Dec 18, 2010 7:11 am ]
Post subject:  Re: A/c gurus help
I had a look at it today the compressor cuts in and out fine but the condensor fan isn't cutting in and out now I'm
No a/c expert but the fan is triggered by a sensor that's ontop of the coke can looking thing right? If it's low on gas would this cause the fan not to work?
I hard wired the fan and it works fine and ran it with a/c on and it didn't get any colder

Cheers
Author:  ajsr [ Sat Dec 18, 2010 7:18 am ]
Post subject:  Re: A/c gurus help
inbits wrote:
I had a look at it today the compressor cuts in and out fine but the condensor fan isn't cutting in and out now I'm
No a/c expert but the fan is triggered by a sensor that's ontop of the coke can looking thing right? If it's low on gas would this cause the fan not to work?
I hard wired the fan and it works fine and ran it with a/c on and it didn't get any colder

Cheers

sounds to me like your low on gas, but not qute low enough that it stops working.
is the hot cold slide pushing the heater tap closed properly
Author:  royce [ Sat Dec 18, 2010 7:24 am ]
Post subject:  Re: A/c gurus help
where the switch is on the coke can thingy (receiver drier its called) is there a sight glass? can you see bubbles when the engine in running?

the fan likely has its own fuse and relay and is triggered by the compressor power line, AC dude will jump up and down without it running cause it ups the pressure and makes shit die, apparently
Author:  inbits [ Sat Dec 18, 2010 7:35 am ]
Post subject:  Re: A/c gurus help
Heater slide definitely works the sight glass didn't seem to have much going on but it did have gas passing through it what does the sensor on the receiver drier do if it doesn't trigger the fan ?
Author:  royce [ Sat Dec 18, 2010 7:37 am ]
Post subject:  Re: A/c gurus help
it tells the thingo that runs the show if the pressure is within specs, low it cuts in to pump it up, once it gets high it cuts it out

if you see bubbles you likely have a leak
Author:  ajsr [ Sat Dec 18, 2010 7:39 am ]
Post subject:  Re: A/c gurus help
inbits wrote:
Heater slide definitely works the sight glass didn't seem to have much going on but it did have gas passing through it what does the sensor on the receiver drier do if it doesn't trigger the fan ?

jump across the wires on the reciver dryer and see if the fan and compressor kicks in if so the pressure switch is fucked
Author:  royce [ Sat Dec 18, 2010 7:39 am ]
Post subject:  Re: A/c gurus help
ajsr wrote:
inbits wrote:
Heater slide definitely works the sight glass didn't seem to have much going on but it did have gas passing through it what does the sensor on the receiver drier do if it doesn't trigger the fan ?

jump across the wires on the reciver dryer and see if the fan kicks in if so the pressure switch is fucked


compressor runs, switch is fine
Author:  ajsr [ Sat Dec 18, 2010 7:41 am ]
Post subject:  Re: A/c gurus help
yeah your right
Author:  royce [ Sat Dec 18, 2010 7:42 am ]
Post subject:  Re: A/c gurus help
ajsr wrote:
inbits wrote:
Heater slide definitely works the sight glass didn't seem to have much going on but it did have gas passing through it what does the sensor on the receiver drier do if it doesn't trigger the fan ?

jump across the wires on the reciver dryer and see if the fan and compressor kicks in if so the pressure switch is fucked



with your new edit :) it can also mean its low on gas, wont cut in to save itself then
Author:  inbits [ Sat Dec 18, 2010 7:43 am ]
Post subject:  Re: A/c gurus help
Ok well I'll try and test the fan circuit and I'll get it looked at by an a/c place thanks for the help fellas
Cheers
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