New York Lemon Law applying to private sale cars...?

This may have been asked an answered, but I couldn't find it. A week ago yesterday my fiance bought me a 93 Jeep Grand Cherokee Laredo. I looked at it quick and just told him that it looked like an okay enough car to me, he looked at it 3 times before handing over the money to the previous owner, but he apparently missed some key things. He had me take it to a mechanic today to have an oil change and to have the front lug studs looked at because a few of the lug nuts were missing and he wanted to make sure the studs were okay before new lug nuts were put on it... anyway... according to the mechanic the cat has been taken off, which is needed to p inspection next year, the front breaks are at less than 25%, it needs new rear drum breaks, the tires are dry and cracking on the inside, and its supposed to be all time 4 wheel drive, but there is no 4x4 drive shaft. The guy we bought it from told my fiance that the breaks were new, and so were the tires, that the A/C works, which it doesn't, not really a big deal though, and that the 4 wheel works, which it obviously doesn't. I tried to tell my fiance the first time I got behind the wheel that it didn't, but he told me that it had to because the guy told him that it did... and yes, my fiance is one of those overly trusting people. The mechanic told me I should have my fiance return it. I told him that I didn't think I could because it was a private sale. He told me that it doesn't matter, that the lemon law applies to a private sale car that cost more than $1000, and that he's had to fight it for customers before in court and won. We spent $1400. I've looked high and low on the internet, but everything I find tells me something different. Does anyone know of a clause in the Lemon Law that allows for private party sales, or of a good website where I can find real info? Even the DMV website confused me. Thanks in advance for the help.