how do i add 134a refrigerant to a 1999 pontiac grand am car?

Answer 1

what does this have to do with car audio?

Answer 2

First let me say, if you buy a refrigerant refill kit, from Wal-Mart or an auto parts store, there is no way you can hook it up wrong. The fittings are different sizes. If you try to hook the fitting to the high pressure side, it will slip over it and not lock, because the fitting is smaller. If you have any mechanical ability, and a little common sense it is easy as hooking up one fitting and reading a guage. Just go look at a kit and read the directions. If you feel safe working on pressurized systems, go for it. If not, pay someone to take the risk for you.

Answer 3

Let me just say, if you had to ask this question, you are not qualified to do the work.... and I say this for a reason.

You are working with a highly pressurized system, 200lbs per square inches or more, and you are working on it while it is being operated.

You will add the refrigerant to the "low side" but if you identify this incorrectly and hook it up to the "high side" (which looks the same to untrained eyes), the can will literally explode.

The inexpensive refill kit from auto shops and Walmart are sometimes called "a suicide can" for this reason.

Please be safe and let a profesisonal handle this for you.

Answer 4

there is two fittings a high side and a low side. Low side will probably have a blue cap and high side will have a red cap. you want to have the car running and ac on high. You add your R134A to the low side. If you know where the filter drier is, there is a little sight glass on it. When you don't see any bubbles your system is full. Add it slowly so you don't over charge the system.