Okay, that is fairly descriptive, thanks.
Definitely listen to Briank or LarryB before me; they both have fixed something on my own car before, so they know more than me.
If the car went a year before it stopped cooling, and since you indicate that there are no other symptoms of a problem, I would add refrigerant again. Here is where posting what year car you have is important: R-134a refrigerant is very inexpensive to add yourself. If your 1991 NSX (which was sold with an R-12 system) has been converted to the later R-134a refrigerant, you could use one of
these kits to top it off yourself. But if it is still R-12, you will have to take it somewhere to have this done, since consumers can no longer directly purchase R-12. Again, my suggestion would be to take it to Jiffy Lube (assuming that they stock R-12, both my cars use R-134a so I have never asked them) (hold your flames please,
I am not recommending them for fixing the AC, I am only recommending them for charging the system. Think of it as a "Freon Change" instead of an Oil Change.) They are the least expensive place around and they sell the same refrigerant and use the same machine that everybody else does.
On the other hand, if it stopped blowing cold after only one week since the recharge, you should take it somewhere to have them find the leak with a UV light or sniffer. The default location is the dealer, but there are some independent shops around who are skilled. So we need to identify exactly where you are so we can point you to a good place to take it to have it looked it. The problem is, you say you are in West Orange. West Orange where? California? New Jersey? Texas? Somewhere else? This is another example of where being specific will help move things along.
Can you tell if your compressor is engaging when you turn it on? If you open your rear hatch you can look down in the right rear side, low in the engine bay, and see the compressor. When your AC is off, you will see the belt spinning the pulley but the center of the pulley stays still. When you turn your AC on and look again, you should see the center of the pulley turning with the belt. This will show you whether or not your AC clutch is engaging on the AC compressor.
So that's where we are at. Figure out which refrigerant you use and proceed accordingly. If you are past this step, time to identify a qualified repair facility to check for leaks. Post your specific city and state and we can point you in the right direction. Or if you are serious about doing as much as possible yourself, you could obtain a
leak detector to check for leaks yourself. I would help you with where to look in the car.
On a side note, just yesterday I was charged $50 a pound for home AC refrigerant (R-22). My heat pump took 8.5 lbs. Plus another $50 service fee just for hooking up to the outside unit. So $475 just to hook up and fill with refrigerant. :frown: This in addition to the other charges for servicing my upper heat pump (There are two HVAC units in my house...twice as many things to break.) I have spent almost $2000 on AC repairs this year so far - one home system and two cars.:frown: And that is with me being involved in the troubleshooting and repairs. If I had just taken the car to the dealer or blindly called in a home repair service, the number would probably be closer to $3000. So I am trying to help you out since I think you are a young guy and don't have a ton of money to throw at repairs, especially since by being informed/involved you can usually save a lot of $$$$ in the process.