1998LS1SS

iTrader: (8)

Why is this thing frozen?????!!!!!!!!!!!!! i just drove it for half an hour and got back, popped the hood and found snow, LOOK. what is wrong? can i just unhook the a/c since im not going to be using it anytime soon? can i somehow re-route it so it can freeze my air lid so i can suck up freezing cold air , JK...but why is this happening. Thanks

Grimes

iTrader: (3)

dosent that happen when you get really low on refrigerant?

1998LS1SS

iTrader: (8)

i dont know...

taws6m6

iTrader: (37)

My guess is that there is some kind of leak somewhere. Or perhaps low. I have seen that happen on residential systems before. Usually on homes, its cause the condenser is clogged up with dust and debri. ??

1998LS1SS

iTrader: (8)

any suggestions on how to fix it myself?

2001NBMZ28

Never seen it that bad on a car before, but I do home AC and it's most likely low on refrigerant. Don't think you can disable it with a fuse because other things might be on the same circuit, see what the owners manual says. You could also keep the compressor from coming on by removing the belt or unplugging the electrical connector. I'd bring it somewhere instead of trying to do it yourself, if it's low there's a leak somewhere - you can buy a recharge kit and try that, but if it's leaking it'll only happen again.

8a8mfh

iTrader: (3)

You say you're not using it, was the a/c or defrost on before this?
If it was on it may be low on refrigerant, the inside fan might not be running, the evaporator coil (under the dash) might be dirty or clogged, or it might just be too cold out, it's normal if you run the defrost with the heat turned up a little and it's cold out.
If it was switched off it could be the compressor clutch stuck on, or the relay stuck.

ls1_doc

iTrader: (6)

Did you have the defrost on ? THe defrost engages the ac to gve you a nice crisp dry heat. Removing the belt would hinder the performance of the heater.

1998LS1SS

iTrader: (8)

actually the defrost was on...i noticed when i got back in the car....so could it be a leak or was it a side effect of my defrost being on

ChocoTaco369

I'm gonna go with a leak somewhere.

Good ol' refrigerant 134-a, the refrigerant constant used in seemingly EVERY thermodynamics problem

LilSlo1

iTrader: (3)

I don't think low refrigerant will not cause the system to freeze up, however an over charged system will.

You're not the only one with this problem

I had a similar problem with my car last summer. Here's the thread I made.

https://ls1tech.com/forums/general-maintenance-repairs/733947-anyone-ever-have-any-problems-their-air-conditioning-freezing-up.html

01WS6/tamu

iTrader: (37)

If it cools fine on high a/c the refrigerant level is fine. On f bodies the a/c compressor is a variable displacement design and runs continuously on a demand for defrost or a/c. When the control is in the defrost position and the compressor is running if the control is set more towards heat then cool there is decreased flow across the a/c evaporator leading to a freeze up condition. As this is happening a set of valve plates in the compressor opens up to protect the compressor from slugging liquid refrigerant and damaging the valves. The line freezing up at this point is normal and then when the a/c evaporator pressure sensor determines the suction pressure is too low it will disable the compressor and allow the evaporator to defrost.

2KnbmTA

iTrader: (3)

if you still think it could be a leak, I say take it to a shop, ask for an a/c evac and recharge, and tell them to put dye in it. that way when you leak freon itll be green

ls1_doc

iTrader: (6)

Its not a leak though.

NHRAMAN

iTrader: (1)

I think the condensor is plugged. Maybe...my fridge line did that a few years ago, and the condensor was replaced..I am looking at that fridge now..no problem.

GMRL

If you unplug the pressure switch on the line it will keep the compressor from coming on when you run the defrost/heater. At least untill you get it fixed.
Just curious, whats that loose connector with the blue weatherpack hanging next to the cylinder head?

NHRAMAN

iTrader: (1)

VERY GOOD .

krayzie7th

to me it seems like low side pressure line is clogged up. Have you replaced anything on the system before?

1998LS1SS

iTrader: (8)

the wire hanging out is the old egr wire.... !egr when the race pace headers went in....smog this year is going to be fun...im going to see what happens when my defrost is not on. thanks guys.

Danny2tek

iTrader: (1)

Well his car is a 98 and he has an LS6 intake so my guess would be the EGR connector