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ive been having major problems with my a/c so today i took it ALL off the car, inspected it and found the system was flooded with green leak dye! the compressor had about 4-5 ounces in it. when i turned the compressor over it poured out. would this give me pressures like 50LOW and 350HIGH?

anyways, i blew it all out, found no mechanical problems and now im going to charge it back up.

my question is how much oil do i need to put in the system? and where is the best place to put it in?

Ive heard that some R134 comes with oil in it but my buddy is charging it up for me and says his R134 doesnt have oil.

 
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Ah, the wonder of google... http://garageninja.com/air-condition...993-1994-1995/

 
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ah but google doesnt answer my question...


do i just pour the oil into the high or low side port on the compressor?

 
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u are usually working on the low pressure side port of the AC, if you dont know what your doing and following the can's directions it usually doesn't work out well in the end since the gauges that come on the can aren't exactly accurate, personal experience...

the gauge said the a/c system has enough freon, but while driving the next day after 30 mins of a/c my old car's relieve pressure valve blew all the freon out and ended up costing a new compressor...shops usually vacuum and recharge for 90 bucks total, and oil is pumped in along with the refrigerant, not poured into it

 
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Not true. If you have the compressor off you can drain into something and measure, then add same amount back in before you replace the compressor. Oil isn't a compressed gas like refrigerant.

 
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using the wrong kind of oil can also seize the compressor. make sure you look up the specs for your car.

 
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sorry, i've seen the machine they use at the shop that pumps in the oil with the refrigerant...

I still feel like i'm right unless there's something new =D

Taken from http://www.ryderfleetproducts.com/cg...accompfail.jsp

"LUBRICATION FAILURE

Just as this is a common cause of engine problems, so too is lubrication failure that most common cause of compressor problems. Remember, the compressor needs to be lubricated by a special refrigerant compatible oil. The oil is "carried" through the a/c system by the refrigerant. The oil will not circulate without refrigerant. Therefore, compressor failure due to a lubrication problem is caused by:

1. Loss of refrigerant which means no carrier of the oil and no lubrication for the compressor.
2. A blockage in the system. This will keep oil from returning to the compressor and will normally show up as too low a reading on the low pressure gauge. "Too Low" a reading means 0-10 PSI or a vacuum. The blockage may be in the form of:
1. A clogged filter drier/expansion valve/orifice tube.
2. Moisture in the system. (If the driver says the air conditioner works okay for a short time then starts blowing hot air and that if he turns it off for a while and then turns it on it works again for a short time, the odds are that there is moisture in the system. (A defective thermostat or clutch cycling switch will cause the same symptoms, however a watery smell will also be present.) Follow steps 1 thru 8 of the "SERVICE PROCEDURES" and make sure the drier/accumulator is replaced, and evacuate for 45 minutes.
3. A mechanically closed expansion valve. Some types may be removed and blown through (with mouth) to check.

Although these parts can be checked and cleaned, the service industry, as a general rule, will replace them. So, compressor failure is caused by:

1. "COOLANT FAILURES"
2. "LUBRICATION FAILURES"
1. Loss of refrigerant-no earner for the oil.
2. A blockage in the system restricting the return of oil.

Only EPA Certified Technicians may service HVAC Systems!"

 
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@ tkevin07: I've actually taken the little 15 question EPA cert test. It's $15 for the cert and actually quite easy.

You are correct, most of the time, WHEN YOU EVACUATE AND RECHARGE, you fill from the low side. If your at home and can't evacuate your system properly then your gonna have oil still in the compressor when you R&R.

EDIT: I apologize, I'm used to using an A/C machine at my buddies place. I guess I just wasn't thinking right yesterday, sorry.

 
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i know how to evac...recharge a system. I have the vac. pump...r134 etc.

my situation is the system was flooded with green leak dye. I dont know what was oil and what was dye so i drained the whole system.

my previous pressures were 50 LOW and 350-400 HIGH.

im hoping all this dye in the compressor was my problem.

Only reason why i need to put oil in is because the freon that my buddy is getting me, he says it doesnt have oil in it. so thats why im trying to figure out how to properly put it in the system. I have the correct oil and everything.

I have alldata but it doesnt say how to oil system...thats why im here

 
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Ok, didn't realize you were evacuating and recharging at home. You can't fill oil at home unless it's in a container that you can attach to the pressure hoses. Either that or you need refrigerant with oil. You can't recharge the system with oil without an actual A/C machine.

*BTW: If you didn't immediately plug your receiver/dryer upon removal you may need a new one. When they're exposed to the outside air they can become totally saturated in 10-20 minutes in a humid environment.