I have done a lot of searching around for information on this subject. I have a good idea on what needs to be done. I am curious if anyone has gotten this kit from Autozone 4Seasons Kit It looks to have everything needed to convert to R134.

My current system is no good and needs to be replaced.

To begin with I am not an AC expert, but do have some experience with what you are attempting. I bought one of those AutoZone kits for my 1986, but it has a 3800SC conversion. Other than the difference in compressors the set up is the same. You are getting an accumulator, orifice tube, oil and compressor with the kit so that's about all that you will need.
Not sure what's been done to your system, but I'd have it vacuum checked to determine if there are any current leaks prior to beginning your installation. When I did mine I pulled all the AC lines ... and I mean all of them. You will definitely want to flush out whatever oil and debris that is currently in the system. Leaving any of the old crap can cause the new parts to fail. AutoZone has a flush kit that you can rent from them ... all you need to pay for is the flush solution. I flushed each line about three times as my system had a ton of oil in it and it looked like molasses.
They also rent vacuum pumps. I'd get one can of 134A that contains dye. If you have a leak now, or later, it will make finding the leak much easier.
So far everything is working good and it's been a year or two since the installation.
Good luck with your work. I suspect that others, that have more knowledge about this subject, may also reply with good info.

The current system when I purchased the car was not working because the high pressure switch on the back of the compressor was just hanging there. I know the system will need to be flushed I am sure crap is in there. Can the system be flushed without anything hooked up? Motor is out of the car with no compressor.

[This message has been edited by Spadesluck (edited 03-26-2018).]

quote Originally posted by Spadesluck: The current system when I purchased the car was not working because the high pressure switch on the back of the compressor was just hanging there. I know the system will need to be flushed I am sure crap is in there. Can the system be flushed without anything hooked up? Motor is out of the car with no compressor.

Not quite certain what you mean regarding a flush without anything hooked up. I'd recommend flushing each component separately by disconnecting each line/section. The further it is necessary for the flush solution to travel the greater the likelihood that something might remain. Having the compressor out is a good start. You could disconnect the fitting coupler on the driver's side just opposite the compressor and flush those lines. Also, while that coupler is apart, disconnect the lines that travel to the front of the car and flush them out. I read that it is not a good idea to attempt flushing the condenser, but I did mine anyway. The older AC condensers are not as restrictive as newer ones so there is less chance of something remaining after a flush.

quote Originally posted by gtoformula: The link below is a step by step 134 conversion article. http://fiero34swap.eleventenths.org/r134ac/

I have seen that thread, my only question would be it says get a kit with fittings? Which in turn made me wonder what kit it referred to. I will get it all figured out eventually.

I made a parts list

https://www.fiero.nl/forum/Forum2/HTML/000652.html

After having done a few R134 conversion, I have had good luck keeping it cheap and simple. I will say though, do not use those R12 to R134 fittings that come in a blister pack like you would find at Walmart etc. They are cheap aluminum and don't work worth a crap. Get the ones from Four Seasons or Murray like RWDPLZ has listed in his link.

quote Originally posted by RWDPLZ: I made a parts list https://www.fiero.nl/forum/Forum2/HTML/000652.html

You sir are awesome. You did not come up in any search because the title doesn't mention R134. Thank you

My 87 2.8 came with the ac removed.
So the lines under the car where still there and I flushed them 4 times with this special fluid.
I took the condenser from an other 87 one and cleaned it.
I ordered all the parts from the list here, new compressor, new dryer, switches and o rings.
I try to read all of the topics here, but some things I like to know are not there.
Electric connection to the compressor, all wires are loose.
Hopefully I can still see on the connectors which one goes to the low and/or high pressure switch. No connectors, just a green/white and a black wire.
Between the 2 wires which go to the top of the compressor is a rectifier, does it need to be there.
I have the new oil, how much and where do I put that in.

[This message has been edited by jan de man (edited 05-25-2023).]