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A refrigerant recovery machine is required.
It compresses the refrigerant (probably r134a) and pushes it through the ac system.
Can be added with refrigerant check can contents
You cant
Based on the info you've provided (none) my expert answer as a mechanic is NO it will not. Take your car to a certified auto ac repair tech, rather than damage it or yourself. The stuff in the ac system is called refrigerant or freon, not coolant.
Well, we'd need to know what make, year, and model of car before that question can be answered. Not all automotive AC systems require the same amount of refrigerant.
There is no reset on any car or truck. You are probably low on refrigerant.
No you don't have to change the A/C Compressor.
Short answer is that you don't. If you need to do this, then you have a certified shop recover and store it.
refill the a/c, it will blow hot air with no refrigerant in the vehicle.
This normally indicates a refrigerant leak. STOP USING YOUR AC IMMEDIATELY AFTER THE ACKNOWLEDGEMENT OF THIS SMELL!! The fumes from the fluid in your AC system are highly toxic. The leak needs to be sorted out before the AC can be used again.
The first step is to figure out what's wrong with it. There isn't just one thing which could possibly go wrong with an AC system - there are several, and that's before we factor in that you haven't identified whether the issue is with the refrigerant system itself, the blend door, or the MVAC blower.