A/C Inop?

[lozanoa11]

eather way thats to low

[SlyStoner421]

im not checking the high side, and i was just using the gauge that screws onto the can and snaps onto the low side line.

I know 5 is way to low, but at one point i just kept adding a shit ton, but when the compressor is off the low side is in the red/warning zone upwards of 60psi.. so i felt i was in danger so i released some pressure back down to the filled zone..

[Virtue]

im not checking the high side, and i was just using the gauge that screws onto the can and snaps onto the low side line.

I know 5 is way to low, but at one point i just kept adding a shit ton, but when the compressor is off the low side is in the red/warning zone upwards of 60psi.. so i felt i was in danger so i released some pressure back down to the filled zone..

you talked earlier about filling it with the compressor off, that wont happend

[MP81]

Mine just stalls my car.

[SlyStoner421]

okay. so if i continue to fill it while its running, the pressure never levels out, and then when its off it shots way up 60+.... is that safe?

[Blue_Thunder]

the system can be low on refriderant but the compressor will still cyle on then cycle right off be cause of the low pressure cutout switch
check the connector on the compressor
if the compressor isn't kicking on you wont be able to put refriderant into the system
im on my way out ill post more when i get home

Um, No, You can charge an A/C system even if the Compressor clutch doesn't work. Had a saturn in at work that I put a full charge in because it was low. Found a small leak but the compressor still was free wheeling. I ohmed out the clutch coil. The compressor clutch coil was open. So the saturn needed a new clutch and coil. Unfortunatly the compressor and cluctch are one piece on these. I also had a Ford in the other day that was 3 pounds low of refrigerant.(3.75 pound system) The compressor will not run if there is not enough freon in the system(too low of pressure) It just depends from system to system of how much pressure is needed to cycle the clutch on. The ford needed 1.5 pounds

[SlyStoner421]

I have a Mitchell1 book and it says my system uses 32oz. of refrigerant so i would need a few cans right? i think i have 2- 14ounce cans still that i can put in if its supposed to take that much.

if my pressure is supposed to read 25-40psi is that while its running or while its not running? I added just one can to an empty system while the comp. was on and the pressure never reached anything higher then 10-20psi but when i shut the comp. off it sky rocketed to like 60+

im gunna figure it out either way i just figured is someone knew...

[Virtue]

okay. so if i continue to fill it while its running, the pressure never levels out, and then when its off it shots way up 60+.... is that safe?

is suppose to be 25-35 while running

if its not above 80 your good, what is it exactly reading when its running

and while running do all of the low side lines feel cold and are the high side warm when you touch them?

and hows the temp of the vent air comeing out?

i never said i knew everything...just what ive experienced

[Blue_Thunder]

I have a Mitchell1 book and it says my system uses 32oz. of refrigerant so i would need a few cans right? i think i have 2- 14ounce cans still that i can put in if its supposed to take that much.

if my pressure is supposed to read 25-40psi is that while its running or while its not running? I added just one can to an empty system while the comp. was on and the pressure never reached anything higher then 10-20psi but when i shut the comp. off it sky rocketed to like 60+

im gunna figure it out either way i just figured is someone knew...

Never trust absolutly what mitchel says. If your car still has its underhood sticker it should say how much freon to put in it. Always go by that amount if its the oem underhood sticker.
Also just because the car is on does not mean the compressor is running. Until the compressor clutch kicks on the compressor is free wheeling. The compressor never stays on at all times unless you have selected max a/c setting. It cycles on and off to keep pressure in its normal operating range.

[Virtue]

come on now hes not gonna find the word freon under his hood since it doesnt take r12

[Blue_Thunder]

refrigerant, freon, same thing, R134a is a type of freon.The underhood sticker will say this vehicle takes R143a only. Then the amount either in oz or Ibs. But as a auto technition my opinion is unless you know how to work on a/c systems(trained by a profesional) then you really shouldn't work on it. All the techs at the shop I work at Hate those do it yourself kits. The cars being built today have systems that take less than a pound of freon in them. Those cans carry 14-16 oz. Plus if you put in to much you will damage your compressors inner seals because the pressure is to high. Not enough freon and you will wear out the compressor faster because the compressor oil (pag or ester oil) will not flow correclty. IMO it is best to take your vehicle to a shop for a/c work. While running the low side should be at least 30psi to run the compressor. He needs to see what his high side is too. He can have a clog in the system or because he never put a vacuum on the sustem to draw out all the air that got in from his leak, he will have an air buble in the system which can cause a great deal amount of damage if it gets stuck in the compresser. Not trying to be a jerk but do it yourself a/c work is really frowned upon by shops and techs. Not because its a lost job for them but because there is a very likely possibility that the person will damage there system.

[SlyStoner421]

well im no stranger to working on just about anything, i have the tools (a tech2) and the knowledge from the mitchell1 book.

seriously though the worst that could happen is my ac never work again or take it in.

on a side note i spent the last few hours doing diagnostics, and it basically came down to not enough 134a (added a full 12oz can to an empty system and thats just enough to make things work) also fixed a mis-aligned heater core cover under the passenger dash. ill keep an eye on what the tech2 says for a few hours make sure my pressure has stabilized but im sure that i need to add another 15-20oz of 134a, but tomorrow ill be taking it to a local shop where the owner is gunna just suck all the air/134a out and put in fresh... but for now i know the system is in check.

[Virtue]

no offence to you but Blue_Thunder freon is a nick name pretty much that Dupont gave to r12

i told him to feel the high and low side thats right there can give away some big signs of either the metering device is clogged or not working as it should

doing a/c work yourself isnt bad/frowned upon

its doing it ghetto with those all in one cans

[GMCYA]

When i bought my car the air only blew warm air. So i cut the belt off of it and that was that. No more air

[Blue_Thunder]

no offence to you but Blue_Thunder freon is a nick name pretty much that Dupont gave to r12

Not trying to be a jerk but Freon is what is listed on our work orders at my shop. And its called freon, there is different kinds of freon for cars, refrigerators, residential cooling and comercial cooling systems. When we buy the large propane sized containers of freon it says right on them Freon then the type either r12 or r134a. And I was just at a CTI A/C class and all the instructors called it freon. The nickname for freon used in cars is refrigerant.