|
|
 Does a 1984-86 a/c system have a high pressure switch?
#879167
04/06/08 02:11 AM
|
Joined: Apr 2008
Posts: 15
OP
Need a Spot
|
I'm adding an a/c to my 84 from a 86 donor. Do I need to add a high pressure switch or does the factory system have one. I installed the evaporator last year and don't remember.
I also can't find the wire to the compressor under the hood. Does it run off of the a/c relay behind the dash?
Any other tips to make this system a cold one?
Any help would be appreciated.
1984 X-cab 4x4, chevy one wire alternator, 22r, looking for mods
|
|
|
Re: Does a 1984-86 a/c system have a high pressure switch?
[Re: 1984NCYota]
#879168
04/09/08 01:43 AM
|
Joined: Apr 2008
Posts: 15
OP
Need a Spot
|
Come on... Nobody has knows. I need to know so I can install a a/c from a donor in my 84.
1984 X-cab 4x4, chevy one wire alternator, 22r, looking for mods
|
|
|
Re: Does a 1984-86 a/c system have a high pressure switch?
[Re: 1984NCYota]
#879169
04/09/08 02:28 AM
|
Joined: Aug 2003
Posts: 2,854
Roll Me Over
|
Ummm do you mean A/C Idle up switch? if not sorry i dont understand....
89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
|
|
|
Re: Does a 1984-86 a/c system have a high pressure switch?
[Re: 1984NCYota]
#879170
04/09/08 02:45 AM
|
Joined: Dec 2004
Posts: 143
Wheeler
|
check the FSM sticky'd at the top of the forum, it has all the schematics and info for the AC. I converted my AC last summer, and I dont remember any switches or wires under the hood except for the compressor clutch wire. inside the cooling unit under the dash may have a switch. Are you converting to R134a when you put it in? itd probably be cheaper if you dont have any access to R12. Good luck!
'94 X-Cab, EB inside and a few fabbed parts. My wife: "How about you stay on the road?" Me: "I drive a Toyota truck, the road is OPTIONAL!"
|
|
|
Re: Does a 1984-86 a/c system have a high pressure switch?
[Re: eastcoast]
#879171
04/09/08 06:13 PM
|
Joined: Apr 2008
Posts: 15
OP
Need a Spot
|
Thanks for the replys,
Yes, I'm installing an a/c system into 1984 from a donor truck. I can't find the compressor wire under the hood. my truck might not be prewired for the compressor, everything else under the dash was prewired.
I'm installing 134a into the system. I've read somewhere that a high pressure switch needed to added. Do I need a high pressure switch?
I've also read, change the expansion valve? Where is it?
I've replaced all O rings and installed a new dryer. I'm ready for vaccum and 134a, I think.
Thanks
1984 X-cab 4x4, chevy one wire alternator, 22r, looking for mods
|
|
|
Re: Does a 1984-86 a/c system have a high pressure switch?
[Re: 1984NCYota]
#879172
04/11/08 04:07 PM
|
Joined: Feb 2001
Posts: 1,681
Body Damage is Cool
|
There's a low pressure cut-off switch to protect the compressor. For high pressure there should be a relief valve somewhere in the system.
- seen in FOUR WHEELER mag July 2006 & OFF-ROAD mag Feb 2007 -
'84 4Runner ARBed 5.29s F&R,4.7 & 2.28 t-cases,hy-steer,BudBuilt skid,30spl Longs,36" TSLs,Chevys
'83 P/U, Buick 231 V6,Holley 4 bbl,Weiand intake,Downey headers,TH350 w/700R4 gearset
|
|
|
|
