Re: Incomplete R134A conversion - What to do?
Here is what you need and how to do it. I did mine about a year ago it it runs great I live in Florida and it keeps my truck pretty cool with no tinted windows. I got all my parts at Discount Auto, you need to get a new dryer/accumaltor, orifice tube, all new o-rings, a cleaner for the system, some 134a a/c oil 2-3 ounces at most, about 4 or 5 can of 134a and one can of 134a oil charge. I found it eaiser to remove all of the a/c componets flush them with the cleaner, clean the fittings with some real fine steelwool. I took the compressor out and set it upside down for a day or so, so it could drain fully then I flushed it with the cleaner. I reassembled everything being sure to put a little a/c oil on all of the o-rings. After everything was back together I put a vaccum pump(got this from a rental store I had my own gauges if you don't check with the rental store be sure you tell them its for 134a) on the system to check for leaks then I let it stay on for about 4 hours to get all the moisture out of the system. After this you need to start the truck turn on the a/c and add 2 cans of 134a(don't worry about the knocking it will knock until you add the oil charge) after you add the 2 cans add the can of oil charge then top off the system by checking your gauges check with a local a/c shop for the right pressures on the day you do this because current temp has a lot to do with the pressures. Be sur you tell whoever you get the parts from that you are upgraded to 134a so you get the right parts. I left out so step by step directions to make this as brief as possible if you have any question feel free to ask. This was not that hard of a job and it saved me about 1,000.00 doing it myself. One place that I found leaks all the time is the tube that connects to the condensor it looks like the condensor is all one piece but, it is not there is about a 4 inch piece of tube that connects to the condensor with an o-ring I have had 4 Ford trucks that all have leaked here I guess nobody ever replaces this o-ring cause it is kinda hidden. Hope this helps and Good Luck,