Sounds like an evac of the system is needed and recharged with the proper amounts, or simply take it to a shop!.....Just my 2 cents!

 

Right, just because it's 8oz that usually means 4oz of oil and 4oz of freon. Or maybe 2 and 6 freon.

 

I think he meant 8oz. of oil. 4 or 6oz. of freon will not make that big of a difference in a low on freon system. It usually takes around 8-12oz. of freon loss that will make a difference in cooling. Whenever someone changes a compressor, they have to take into consideration that there is also left over oil in the lines, evaporators, and condenser. NEVER give a full charge of oil when changing out just the compressor!! Putting in too much oil will cause a system not to operate correctly and this is where people who do it themselves screw up.

 

^^ That's not what I referring to. I was trying to see how much oil he put in so I could see if it had too much oil.


^^ Did you read where he did a vac. Oil doesn't get vacuumed out, also most new compressors already have oil in them.

 

REFRIGERANT OIL LEVEL
When an air conditioning system is assembled at
the factory, all components except the compressor are
refrigerant oil free. After the refrigerant system has
been charged and operated, the refrigerant oil in the
compressor is dispersed throughout the refrigerant
system. The evaporator, filter-drier, condenser, and
compressor will each retain a significant amount of
the needed refrigerant oil.
It is important to have the correct amount of oil in
the refrigerant system. This ensures proper lubrication
of the compressor. Too little oil will result in
damage to the compressor. Too much oil will reduce
the cooling capacity of the air conditioning system.
It will not be necessary to check the oil level in the
compressor or to add oil, unless there has been an oil
loss. An oil loss may occur due to a rupture or leak
from a refrigerant line, a connector fitting, a component,
or a component seal. If a leak occurs, add 30
milliliters (1 fluid ounce) of refrigerant oil to the
refrigerant system after the repair has been made.
Refrigerant oil loss will be evident at the leak point
by the presence of a wet, shiny surface around the
leak.
Refrigerant oil must be added when a filter-drier,
evaporator coil, or condenser are replaced. See the
Refrigerant Oil Capacities chart. When a compressor
is replaced, the refrigerant oil must be drained from
the old compressor and measured. Drain all of the
refrigerant oil from the new compressor, then fill the
new compressor with the same amount of refrigerant
oil that was drained out of the old compressor.
Refrigerant Oil Capacities
Component...............................ml.......f l oz
A/C System 4.7 L (Front Only).....210 .....7.1
A/C System 4.7 L (Front & Rear)..300....10.1
A/C System 5.9L (Front Only) .....210 ....7.1
A/C System 5.9L (Front & Rear)...300...10.1
Filter-Drier................................30......1
Condenser................................30....... 1
Evaporator (Front).....................60.......2
Evaporator (Rear)......................30.......1
Compressor
drain and measure
the oil from the old
compressor - see
text.

 

+1 Hydra, the OP stated that he added 8oz. of PAG oil and that is what I was referring to, he added way too much! I also read that he did a vac and also that he added that quantity of oil to the system. Sorry if I mention a he if the OP is a she.

 

ok guys, its workin fine, the E-Fan went out causing the freon to not get cooled properly, that was the cause of the high pressure and the system not taking more than 12oz of freon (and 10oz of oil installed in various spots) the system is blowing 38deg f front and 40 deg f rear, like it should... everything was done to spec... even though it was my neibor who did it... he is a certified ac tech for the US Army motorpool, he just did it at his house instead of the shop on post

 

Like I said earlier in my response, the e-fan has to operate in order for the system to operate correctly. I just saw the flush post you had and you are right in adding that amount of oil. When you flush the system completely, you do have to add the correct amount of oil back into the system. A flush totally evacuates all oil in the system. Your friend did do the right procedures. Thank you for giving us an update on your post!

 

Sounds great!

 

Just to help the next time. If I have troubles getting the last few ounces of freon into the system. Take a garden hose and run a little water over the condenser that will lower the pressure in the low side system and allow it to install easier.