When I recharge the a/c with the DIY kit

I first need to vacuum the system, will a vacuum pump rented from autozone do the trick?

Then I need to put my a/c relay back in, and turn the car to max ac.

Then connect a can to the hose with the puncturing needle on top and keep it upright and flow into the system while shaking the can occasionally.

Which port is the (suction) low side port I need to put it into? The one closest to the passenger compartment?

Then I monitor the gauge for a pressure around 25-45 with the compressor running correct?

How much 134a and oil does the system need? Will the kit at autozone have enough in it?

Also, do you really need a new drier? The a/c was not disconnected very long. a new drier is 70 bucks.

 

ttt

 

If it had a leak then the first thing you have to do is find out why.

If you have to ask such questions then it would be advisable to take it to a shop that does AC and can guarantee the work. They can then identify other problems with the system even as early as when the system is evacuated like a bad thermal X valve. There is nothing wrong with doing some of the work yourself like locating and repairing the leak and testing the system integraty (if you had a leak) and then taking it to the shop.

There are somethings that are just not worth screwing with. A bad seal in a compressor is one. A used dryer is another.

Dave