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a/c system question

983 Views 7 Replies 5 Participants Last post by  jmann
My a/c id not working properly - hot air comes out at times. I looked under hood and see we take the new type of coolant that you can recharge yourself. As I happen to have some with the qage on it, I figured I would check/refill it. I looked under hood and there appears to be two valves: one on the left side (looking at enging from the front) near the firewall and one on right side near the radiator. Both valves seem to look the same and neither is labled. They both are part of cooling system. The one on left side into black box and the one on right goes to a line into compressor. which one to I hook the charging unit up to? Also any ideas what else besides coolant could be the problem? I see no leaks in system and it worked fine last summer. Thanks
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If you are going to replace your compressor, you may be better off to let someone do it. There are a lot of requirements you need to meet for the warranty to be honored, and it is almost impossible to prove everything was done right if you have compressor trouble later on, unless you have a shop invoice with all the work written on it. They will require you to change the accumulator, and the system will have to be flushed and re-oiled. You probably will want to clean the orifice tube while you're at it. You will have to evacuate the system before you remove the compressor, and it will need to have a vacuum pulled on it before you reinstall the R-134. It also seems that rebuilt compressors are hit or miss any more, so there is a pretty good chance you will need your warranty.
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