I need to recharge the AC can you help me please?

Yep recharging the AC is not too bad check out this guide and video to show you how.

https://youtu.be/uZrQCGwXfek

and

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

Please run down these guides and report back.

Hi budjak,

This is an environmental concern as freon gas should be handled with care and by trained personnels.

If there is insufficient freon in the system, there should be a leakage somewhere and any leaks should be diagnosed and rectified before charging the system. Failure to do so would only provide a temporary reprieve and when pressure drops again, releasing freon into the atmosphere at the same time, the system is going to fail again.

If there are no more freon in the system, it has to be vacumned before freon can be charged, otherwise you are going to damage the system components. Moisture would be inside the system and this cause damage and inefficient cooling.

Charging the freon is via the low pressure port.

Hi hvyhauler,

Adding oil to the system is very subjective.

The whole AC system has many components and each of them has a certain amount. Unless you are changing 1 component, then you need to top up with the amount required for that component.

Apart from that, even if you know the compressor has a certain capacity, but you would not know how much is needed to top up unless you take the compressor out and measure the oil in it.

I don't believe anybody can recommend you the amount of oil to add.

Hi ajones240,

To charge AC gas, you would need specialized equipment's to ensure the system is not over or under charged. Pressure gauges would be required. If the system is empty, it has to be vacuumed before new gas is charged.

If the system is low on freon, there ought to be a leak somewhere and this has to be rectified, failing which the freon is going to run low in no time.

Parts store sells recharge cans which you can plug into the system to charge but it is not going to be accurate and might cause harm to the system if overcharged.

Yes, this is how it acts when the refrigerant is low. Here is a guide to help you recharge the system:

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

Please run down this guide and report back.

Cheers, Ken

Yes put the oil in one of the lines as you connect prior to connecting it high side is better. Also turn compressor over by hand about 10-15 times to get the oil through it then evacuate system and then recharge it.

What are the pressure readings, are you using a 2 gauge manifold set?

You can't do this with out knowing what the system pressures are, you will have to get them read by an A/C tech.

Sounds like you are doing fine, let me ask a few things;

Are you trying to repair a situation where the A/C is blowing air, just not cold air?

I forget the cutoff year for R-134 and R12 (Freon). Freon is more expensive to deal with but is much colder than a R134 system.
It will cost more to fill and the sytem must be free of leaks in either case.

I will keep an eye on this post for your reply.