How many cans of 134a did you put in it? If you put more than 2 cans, that is why it doesn't cool well. My 87 was filled using the inline gauge that comes with 134a. It just didn't cool well. I took the advise of a PFF member, drained it and refilled with 2 cans. It cools great, even in the 95* weather. If you do, you might want to use one can with the stop leak. Dollar General has it for about $13 a can.