S14 A/C problem

[97SerevoSX]

Hey all in short, I have a redtop Sr in my kouki. Wiring Specialties wiring harness. The A/C compressor will kick on just fine, R134a canister gauge shows good pressure when it's running, but the air never gets cold... I can swap an engine, take it apart and put it back together but I'm clueless to air conditioning..

[KiLLeR2001]

Try moving the slider to cold. If it's on cold, the lever could actually be broken off from the adjuster. Happened with my car.

edit: Hmm just read that you have an S14, not sure if there is a manual lever for the hot/cool door mixer. If not, the mechanism itself might not be switching.

[97SerevoSX]

I think that is electric in the s14 or vacuum controlled. Either way, I hear it switch over and it isn't "heat" coming out of the vents. It's much cooler than that and when I slide it to hot it gets a lot hotter (like my heat does) so I don't think it's that..

[Butcher240sx]

How long if ever was the system exposed to outside air? Was the drier replaced and suction put on the system when charged?

[97SerevoSX]

How long if ever was the system exposed to outside air? Was the drier replaced and suction put on the system when charged?

Not for very long, maybe overnight while I had the compressor off to put the CodyAce bracket on. What's a drier? Also no..

[Butcher240sx]

the drier is a cannister conected to your ac lines near the condensor. it removes moisture from the refrigeriant.i replace mine if i open the system at all. open overnight is long enough to ruin it. Mine was $8 new. open it and install it right away and go get a proper ac charge so they can pull vacume on the system. that sounds like your problem.

[97SerevoSX]

Ahh right next to the battery (or where the battery used to be at least)? I will definitely try that. Is that something I can get at autozone?

[Butcher240sx]

Yes sir. Make sure to get the o rings on straight, on the S13 the pressure switch is attached and I had to move it to the new one. It's a very important part of the system.

[97SerevoSX]

Hmm what about on an S14. Mine's a 97 with all the original A/C stuff

[Butcher240sx]

Not sure, find the drier and if there is a switch and harness on it thas the same.

[Butcher240sx]

Nissan 240sx A/c Receiver-drier at Auto Parts Warehouse (http://m.autopartswarehouse.com/mmp/nissan~240sx~a-fs-c_receiver-drier~parts.html)
This is the drier. Mine has 4ports and an inspection eye on the top. One port for press. switch, one line in, one line out, and one plugged.

[ka4life87]

Did u draw a vaccum on ac system prior to filling freon? Will never get cold if air in system

[Butcher240sx]

It will get a little cold, but suction will assure a full fill and a drier will remove all the moisture making the system much more efficient.

[S14DB]

Did u draw a vacuum on ac system prior to filling freon? Will never get cold if air in system
This is what I am thinking.