MrTDR04

Hello people I have a 99 GT with a 1.7 Kenne Bell with about 60K on it. My car has been down for a few months and I did a full fluid change to make sure everything would be good to take her out. I noticed this just before I let it sit and figured it to be that it was time for my oil change. It had been almost 8k since I had changed my oil in the blower so it made sense. I changed everything and started it up yesterday and once again at 2200 the rattle was there, is this the "death rattle" that everyone talks about? It is quite strange because if I pass 2200 the rattle go's away. Any help is much appreciated. Thanks