1972 Highlander -The making of a daily driver

[70monte]

I re-read your post and one thing I noticed that you did that you should never do is use a flush product in the compressor itself. It will ruin it. Also never attempt to flush any lines that has a muffler in it like the line on top of the compressor that has that can looking thing on it. To be honest, you have to be almost a 100% sure that you are getting all of the flush out of everything or you can possibly destroy things. The only thing that I will flush is hard lines with no mufflers and the evaporator. Everything else I replace.

The other important thing is to charge by weight. That is the most accurate way to get the charge right. Pressures are only a general guide and outside temps will affect what your pressures are. If you are using r134a, only charge to about 80% of the r12 amounts. I don't know on the freeze 12 stuff.

Also make sure your fan clutch is working correctly. If it is old, replace it. I usually replace them just to make sure.

Try and get some stuff called Nylog for your connections and o-rings. Great stuff and will help prevent leaks at these areas. Go to their website for place that you can get it locally.

Finally, go to www.autoacforum.com and do some reading or register and ask questions. Very imformative website on auto AC. Good luck.

Wayne