tabularasa

how can i tell what kind of compressor i have? 91 FC3C ?

I went to a A/C place that said mine was dead and wanted $350 for a new one. I'd like to get my own and have them recharge it.

SidewaysFC

don't you need a place to evacuate these different chems like freeze 12?...talked to a friend at an a/c shop and he said that we wouldnt be able to evacuate my system legally cause there is no place to store it?...since most places work on r12 and r134 and what not

also, lemme see if i can get a good answer...my system is a part, save a few lines that were left in the engine bay.

so far it seems like i need to clean the parts already out of the car like the condenser and steel lines

...flush the compressor since its out

buy a new dryer and seals/o-rings

then put it all together and evacuate the system?

then leak test it, then recharge the system and itll be ok?

i dont know how the leak testing is done...seems like the system has to be charged and therefore i need to evacuate the system more than once and use 2 times the refrigerant


...maybe someone has a simple solution

calio64

were can the reciever/dryer be purchased?

thanx

SidewaysFC

napa, usually any well-to-do auto shop

duehuynh

sideway:

you hit on the nail..that's the problem with fr12 , autofrost, and such products: you can fill your system with this stuff the first time, but if you have to take your car to get the AC fix at a shop, they won't take it because most shop deals with r12 and r134, and they don't want to contaminate their system with the other stuffs.

Damn the EPA!

SidewaysFC

well thats not good...now im forced to get r134 cause i have no chance of having the tools to evacuate the system or storing it somewhere...and r134 apparently doesnt cool for crap and blows things up

J-Rat

iTrader: (2)

Yep, thats a problem..Thats why you evacuate the system your self.

SidewaysFC

by chance do you know the tools and procedure?...maybe a procedure on my previous question at the top?

J-Rat

iTrader: (2)

I am going to defer this question to either SBI or Maxtheman... I dont evacuate them, I just charge them!

SBi_Owner

You need a gauge set that will read the range of the chemical, a vaccume pump that can pull 30in Hg, a small nitrogen bottle and leak detector bubbles or soap and water in a spray bottle.

You DO NOT run the A/C with just a nitrogen charge as there will not be any oil in the system and will trash it.

You draw the system into a vaccume of at least 15-20in Hg using the pump and the gauges. You then turn off the pump, and close the gauges and see if it holds the vaccume for at least 30 minutes. If it doesn't move, then you are safe to recharge. You can also use a hair dryer to heat up the condencer coil and lines to get all moisture out. If you find that the vaccume doesn't hold, then you need to put about 10psi of nitrogen in the system and start spraying the soap and water all over the system and start looking for bubbles.

Thats the short version for now, I can give a more detailed version later if needed.

Remember, you need to draw the system back into a vaccume before charging the unit. You also need to make sure that the recomended amount of oil is put back into the system as per the manual.

mwpayne

I'm sure the above is the correct/proper procedure, but I just bought some freeze 12 on ebay along with a can of stop leak stuff, added both and system blows cold.

SidewaysFC

thanks SBi...in short, im putting all the components back together clean, then create a vacuum for a leak test, locate and fix any possible leaks, create the vacuum again, then charge the system with the proper amount of oil and refrigerant?...in my case, freeze12 seems to be the safest and best working alternative

if i do all the those procedures you listed correctly...is there a chance that i will have to evacuate the freeze 12? and is creating a vacuum the same as evacuating the system?

Aaron Cake

iTrader: (1)

Good thread. I put a copy in the archives...