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Location:
brisbane
Registered:
September 2005
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air con not engaging
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Wed, 02 November 2005 10:10
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ok wellll, im pissed off
the parents got my air con regassed
and i knew the compressor clutch wasnt engaging, so b4 they regassed it i asked them just to power it up make sure it does work, thinkin it would be the pressure switch hiding somewhere stopping the magnetic clutch engaging.
they sed it worked
sooooo......
i took it home
tried to find any issues
everythin seems alright
the only thing i think it may be is the air con amplifier
would it be that? this is in an 82 ke70 btw
any suggestions would be great
thanx guys
~andrew~
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Location:
Seated
Registered:
November 2005
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Re: air con not engaging
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Wed, 02 November 2005 10:23
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Does it engage at all? Like does it engage then disengage quickly?
This is often the case if you have no/low gass - ive had it happen a week after a re-gas from smoeone i will never go back to.
Currently ive got a blockage in my TX valve, and my gas is most likely too low to kick it over.
Just take it to someone who knows what their doing. Or even cheaper, take it back.
If i've read the post wrong and the aircon works, what's the problem lol. 
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Wed, 02 November 2005 10:28
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it doesnt engage at all when u press the button
it engaged when they put power straight to it, but using the button which then like feeds off the coil and into the loom into the amplifier thingy and back again it dont work proper like. they sed there are no leaks, ive dealt with these fellas b4 so i trust them, they sed they dont know the issue as they thinkin it must be electrics
god i hate electrics 
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Wed, 02 November 2005 10:35
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p.s. they got it done as a bday pressie and now the moefoe still dont work
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Location:
Adelaide
Registered:
November 2004
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Re: air con not engaging
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Wed, 02 November 2005 11:38
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Hey
How did they test to see if it was engaging?? Did they just put power to the switching wiring on the compresser?? If they did that it bypasses the low pressure switch and engages. For there to be no leaks there would still be gas in the system 5yrs later but to check for leaks you have to have the system running atleast once for the die to show up. If they did put the gas in and its still not engaging it will most probably be the pressure switch, its not very offten its the amplier. I'd check that when you push the a/c button with the fan on that you have power through the pressure switch. If you don't then take it back and get them to fit it.
Cheers
Craig
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Wed, 02 November 2005 11:46
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yes im pretty sure they just put power straight onto it
they sed it did run
and no leakies
now my dilemma is me and dad spent ages and found the amplifier using the diagrams, but still couldnt find the pressure switch, the air con guys sed it didnt have one. but they fitted one above the gas bottle thingy (sorry bout the wonderful terminoligy  ) next to the a/c radiator and thats wired onto the switching wires...
i havnt checked to see if i have power through the switch but its brand new, and im sure it didnt use to have one so they just added it for safety, but the diagram it says it shouild have one
where would i find it in stock position?
sorry but all da dum questions but im fresh outta ideas with this
all help is truly appreciated
~andrew~
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Location:
Adelaide
Registered:
November 2004
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Re: air con not engaging
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Wed, 02 November 2005 11:51
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The pressure switch will be behind the a/c unit under the dash. I couldn't find it in my sprinter when it was stock untill i did some weight reductions. Maybe try disconnecting the switch they put in and bridge it with a bit of wire and switch the a/c on. That may still not work because if there is gas in the system it should still work.
Cheers
Craig
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Wed, 02 November 2005 12:04
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behind the a/c unit 
the amplifier was on the side
hiding very cleverly lol
i may go have a look 2 moz
coz even if they put a new one on
if the old one still there and is farked...
but why would it be farked, dont make sense to me 
thanx for the help tho
i may check it out 2 moz
c if i can find it
any more ideas? anyone?
thanx
~andrew~
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Location:
Adelaide
Registered:
November 2004
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Re: air con not engaging
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Wed, 02 November 2005 12:21
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If you do pull the unit out be carefull as you have to undo the the a/c pipes. You really should take it back to the wokshop because your not aloud to let the gas out into the air and the gov has just bought new laws in about it and you could get fined.
Cheers
Craig
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I Supported Toymods
Location:
Sydney
Registered:
December 2002
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Re: air con not engaging
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Wed, 02 November 2005 12:25
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If its R134 (the newer gas) you can dump as much of it into the atmosphere as you want... in fact R134 is whats in those air duster and freezing spray cans you get.
Dumping R12 (freon) into the atmosphere is bad though.
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Wed, 02 November 2005 12:32
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yeah i wondered if i would have to. im not gonna dump it coz its just been put in, but it is the stuff u can dump
i may call the workshop and ask them, but i dont see why or how the pressure switch would be faulty....
do u have any ideas toobs on the actual problem?
or anyone else?
thanx everyone for the help
keep it rollin'
cant ever have too many suggested solutions to a problem
~andrew~
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Location:
brisbane
Registered:
September 2005
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Location:
Adelaide
Registered:
October 2002
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Re: air con not engaging
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Thu, 03 November 2005 03:00
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On the filter (cylinder lookin thing) theres a clear hole to see gas flowing thru, and probably a solenoid connected somewhere near this. just disconnect the solenoid and connect the two wires straight together. the solemoid is a pressure switch so that if there is a loss (or not enough) gas pressure, it doesnt allow the clutch to engage and burnout the pump thingy. Did this to my Datsun and all is fine. just dont remove the solenoid or you'll need regas
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Thu, 03 November 2005 04:06
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yeah ive seen that window thingy. i dont remember seeing anythin attached to it tho.
they put in a new pressure switch, im not sure if its in place of the window thingy or just above it
at school atm, so will have a squiz when i get home.
im thinking at the moment is it possible to simply take a fused live from the battery and connect this into the pressure switch rather than relying on all the bullshit that goes from the coil into the interior loom and to the amplifier and to all the other bullshit before making its merry way back to the compressor. im thinkin i coukld just wire in a seperate switch, would there be anything wrong with doin this??
thanx fellas
~andrew~
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Location:
Campbelltown
Registered:
November 2003
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Re: air con not engaging
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Thu, 03 November 2005 04:15
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Out of interest do the fans on the car work or not. Just wondering because the aircon and fans on my car stoppeed working and the problem was that water had leaked into the fusebox in my passenger front kick panel and blown the relay for it.
Not to sure on the wiring setup of the Ke70's but being the same vintage does the aircon have its own seperate fuse box to the other electrics on the car.
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Thu, 03 November 2005 05:46
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no the fans work
theres 3 fuse boxes
one under dash
one in engine bay
and one in the driver side kick panel
cant find anythin to do with aircon and every fuse seems to be in one piece
~andrew~
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Location:
Campbelltown
Registered:
November 2003
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Thu, 03 November 2005 06:01
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hey mate
me and dad were thinkin relay, but dont know which one it is
where is it located, and a photo if u want, but im pretty sure on the relay bit
if u can tell me where it is
ill go flog a similar relay off thespare parts mobile (non-aircon model)
this could be really handy if u could tell me for definite where it is
thanx
~andrew~
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Location:
Campbelltown
Registered:
November 2003
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Re: air con not engaging
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Thu, 03 November 2005 06:13
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I'll get the pic up for you tonight as atm I am about an hour away from my car. I'll also get the part number which will still be visible on it as they were the same across the other models. The cressidas had in in the fuse box under the bonnet that holds the ecu fuses etc. Whereas the corona had it under the passenger front side kick panel.
If you have a manual for the car it should show you the location and what should be in it. Anyway i'll see what I can do for you. 
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Thu, 03 November 2005 06:16
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are they labeled or like is it written on what it inserts into what each one is for, or do u just guess?
the fusebox in the engine bay doesnt mention it
thanx mate
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Location:
Campbelltown
Registered:
November 2003
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Re: air con not engaging
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Thu, 03 November 2005 08:43
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OK on the side it says Blower Relay
859913 - 30020
ND 056700 - 5061
12 V 20A
It has a plain clack top so if they're close together you'll have to pull them and just read the side.
Hope this helps.
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Location:
brisbane
Registered:
September 2005
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Re: air con not engaging
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Thu, 03 November 2005 09:15
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if the blower works, as in it blows air out the fan its not gonna be that is it?
thanx for that tho mate 
~andrew~
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Location:
Sydney
Registered:
May 2004
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Re: air con not engaging
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Fri, 04 November 2005 02:17
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in my st162 celica the a/c fuse was at the front passengers feet on the left inside the car.
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