A/C refill?

[96mark8]

My AC is all out, i have heard that you cant fill a mark VIII with 134A cuz it will ruin all the O-rings in the AC system is this right or way off? can i fill my car with 134A?

 

[BAD97LSC]

134a is what came in your car from the factory, r112 hasnt been used in a long time, you can still buy it but the price is crazy. yes, you will want 134a in your car.

 

[96mark8]

Thanks!

 

[Icarus]

You need to find out why it came out (a leak) and fix it or you will be doing it again in short time.
Filling by weight is the most accurate way to fill.

 

[mespock]

If you refill it you should use the oil to help seal leaks

 

[Icarus]

A lot of shops won't touch a system known to have sealer in them, so its best to fix the leak.

http://www.autoacforum.com/messageview.cfm?catid=20&threadid=21123

http://www.autoacforum.com/macs/sealer.pdf

 

[NoLimit95]

I used nearly three cans of this almost two months ago and mine was empty. First can started getting the compressor going. The 2nd can made it stay on and it took over 1/2 of the 3rd can and it's blowing cold. Checked the pressure a couple of days ago and it's still the same as it was right after filling so apparently, it fixed the leak it had. At idle, it reads around 39 to 41 psi.

 

[96mark8]

thanks guys i will make sure to get the one with oil. i dont think i have a leak it just has never been refilled before and i pulled my engine out about 2 years ago so all the ac stuff came out with it.

 

[NoLimit95]

thanks guys i will make sure to get the one with oil. i dont think i have a leak it just has never been refilled before and i pulled my engine out about 2 years ago so all the ac stuff came out with it.

You really need to have a vacuum pulled on the system then if it's been opened. If not, the pressure is going to read high and it's not good to have that extra air in there.

 

[mikemark8]

you should vacuum the system before refilling it, it gets the moisture out of the system and it helps the charging by starting with a vacuum-you can also verify that the system has no leaks if you put a vacuum on it and it holds overnight. You can buy a single stage pump at a harbor freight for less than $100, it's a nice thing to have.

 

[CobraStar_LS8]

I made a vacuum pump out of a compressor from an old frig someone threw away...works flawlessly!