as far as your kit that you bought..you get what you pay for. If your compressor seized, you would need replace your condenser, accumulator and flush your evaporator...or replace it if it never has been before..probably bad.

I suggest if you replace the parts and you have never serviced ac that you put it together and take it to someone who knows what they are doing..or you will be back were you are in a another year.

 

I know this is a bit outdated but my comment may help those who are reading this now.
You don't just unbolt the old compressor and slap a new one on and charge up the system..........A/C systems are much more sophisticated than that! If you follow that proceedure you'll probably have very poor A/C and be replacing the compressor again before long!
I saw one other author mention "oil" but that was the extent of the comment.
An A/C system is a very specific ratio of OIL to FREON and any variation from that calculation is going to effect the system! It is important to have the correct amounts of both oil and freon.
When you change out the compressor you have to drain the oil from the old one so you know exactly how much should be in the replacement........and then that's only a calculated guess and not an accurate guess! Some compressors come with oil and some come without and you have to add upon installation............either way, it is paramount that it be the right amount!! Too much or too little oil will effect the A/C system to the tune of poor cooling, compressor failure, and a host of other issues!!
You also need to find out why the old compressor failed! Was it a lack of oil and lubrication or was there some other cause??? Over charge of freon will create high head pressures which also take out a compressor! Moisture in the system and a whole host of other reasons!!
The best method is to flush the system so you are starting with zero.........then adding the manufacturers recommended quantity as stated on the sticker under the hood or the vehicles shop service manual, that way you have an exact science! The same applies with the freon, starting from zero and adding the manufacturers recommended quantity as stated in the same location ensures exact science and your system should operate at its best efficiency!
Now that you have the compressor replaced you also need to replace the condensor, orfice tube, and the drier as well due to the contamination from compressor failure! Not doing so is guaranteed future failure and flushing the system is not a guarantee of getting all that contamination out........especially with the condensor or orfice tube!!!