Does anyone know anything about this stuff. I bought a conversion kit but decided I would check it out here first. The kit came with the oil used with 134-a, two cans of 134-a, and the adaptors and hose used to fill it. The instructions say to get the system perged and to hook up the hose between the bottles and adaptors and open the valve. The instructions say that the old oil does not have to be removed because it does not mix with the new refrigerant and will simply find a space and stay there. It also says it will not harm the compressor. What do you guys think? I need to replace my evaporator anyway (it looks like a 20lb bird flew through my grill and hit it!) and so the system will be purged anyway and freon seems to be very expensive and hard to use/get.
Yes, the 134-a is the way to go,, I have done it many times. No problems here ever, just use some common sense and dont overcharge it.
thank you, Dan. If I simply use the two cans of 134a and the oil in the box after the system has been purged, I should be good to go, right?
I dont remember what the capacity of the freon is on your car, but it is usually 75% of what R12 calls for, like I said dont overcharge it. If 1 can and some oil gets the compressor to start, stick a thermometer in the a/c vent, if it blows above 60 degrees it still is not working properly. Best advice go back to autoparts store and get a cheap gauge for checking pressure. It will save you in the long run, and be safer. Remember you are dealing with high pressure and you can get hurt!
Also in the instructions you have with you retrofit kit it will give you guidelines on pressures, read these well.
thanks for the advice i will first try to find a replacement evaprator
Although you can succesfully retrofit an r-12 system, you should have the system vacuumed after you make repairs. This is to ensure that you dont have any moisture in the system or non-condensible gasses. it is a good idea to replace the dryer at a minimum, with one compatible with r134a, because r134a will break the r12 dessicant up and send it through the system. you will find yourself recharging often since r134a molecules are smaller than r12 and will escape through the hoses and o-rings. r-134 hoses are nylon lined barrier hoses to counteract this problem. also r134a can reach in excess of 300 psi on the high side, so make sure that your hoses are in good shape if you are going to use the old ones. if you have any hose clamp type connections they wont hold. most napa parts places can make them if any need replacement. r134a should cool to 1/2 of the outside temp with low humidity conditions. with high humidity it will be about 3/4 of the outside temp. if this is on a maverick the stock condensor should be large enough.
any way i am not trying to discourage you, it should work just a few pointers
I see what you mean. And no you are discouraging me. I need as much info as I can so it helps. The can of oil that I have says it contains a substance the helps keep the r-134a inside the system better. We'll see how it works. Any advice as to where I can get another evaporator? Like I said earlier mine is in very poor shape.
although i havent ordered any ac parts for my maverick i have had considerable luck ordering maverick parts from napa and orielly's
the salvage yards around here are jam packed full of mavericks and comets.
I personally removed my ac system last year, it was allways in the way. i will probly regret it later on, but i held on to all the parts just the same.