Could I do this on my own? my A/C was drained during the motor swap and I was wondering if there were any instructions, etc as to how to do this? Thanks

Brian

 

Ok dude. Hopefully this will help you out as I just did it after my motor was droped. First off, it is real easy. You will more than likely have to take a jumper wire and run it on the relay to make the compressor run due to low pressure. To do this, take out the ac relay in the fuse/relay box under the hood, and then simply take a small piece of wire and strip the ends back about a 1/4 inch on both ends. Then plug the wire in the slots on the b1 and b4 slots, and the compressor will run while you put the refridgerant in the system on the low port side of the ac system. The car must be running to put the stuff in. Takes about 1 to 1.5 or so cans. After this is done, take the wire out, and plug in the relay. Make sure you disconect the battery and reset the computer, or the ac wont work because the low pressure code from the ac will keep it off until that code is reset by unplugging the battery.

 

Doesn't sound too bad. I'll give it a shot.

 

Aren't you also supposed to get the lines vacuumed out, to remove all the air and moisture?

 

Yes if the system was opn/empty, it should be evacuated..
Also the system holds 2 lbs of R134..[about 2.66 of the 12 ounce cans] if empty..

 

Always evacuate an empty system. If it's been empty for a while, you should replace the accumulator as well. If you don't evacuate before filling, it will affect the efficiency and longevity of the system. You want to pull a strong vacuum for about 30 mins if you can. That will get the moisture out. After you've evacuated the system, you can add a can of refrigerant (with oil) with the compressor off. The system will probably take most of it without starting the car. Then start the car and turn on the AC and fill it the rest of the way with straight R134A.

You could probably find someone to evacuate and refill your system for $40-$50 if that's all you wanted done.