filling the A/C

June 02, 2006, 09:14:42 PM

i bought one of them do it your self a/c kits but it doesnt tell me what port to hook the can up to red or blue??

filling the A/C

Reply #1 – June 02, 2006, 10:13:08 PM

Blue and yellow is what I've got for the fill lines but I have two. Have you had the system checked for leaks? HAve you flushed it or had it flushed? Is it a R134 kit? If it hasn't been flished it needs to be. I used Murry A/c system flush. It isn't pressurised so I took everything apart. used compessed air to push it though the condenser, evaporator and the lines. Drain the compressor oil take it off the car and drain it ports down until all the oil comes out, turn the compessor over buy had slowly to help remove as much as possible. Then might as well replace all the o-rings. Then might as well replace the orifice tube and receiver/dryer. This is what I recomend to make your system cool the best and last the longest. Before you fill it have someone vac it down or buy a cheap harbo freight $10 vac pump and do it your self. use the guages to watch during vac down and see if it holds vacume. That checks for leaks and helps remove any last little in the system. Then turn on the car and the A/c on max fan on high. Then fill the system throught the low pressure side (the smaller fitting). Did all this to my system about this time last year Still works great. Nice and cold. I do have to nice electric fans that move alot of air when moving slow.