Originally Posted by 92olds88royale
afterwords i reconnected it with the oil cap on and it felt like the car was missing a little bit and when i pulled it off again and put my finger over it was much smoother
Okay. The FSM does say that the PCM can call for a purge when warm and idling, but I don't think that'* what happening here. I think that you should remove the purge valve from the canister, unplug the electrical connector from it, and see if the canister vacuum connection on the valve sucks when the car is idling and the vacuum hose is connected to the purge valve. If it sucks, it is bad.
I would suggest you make the same test (remove hose and plug) with the engine idling with every vacuum line that is connected to your intake manifold and throttle body (with the exception of the hose to the FPR) to see if you find any other leaks. I have a sneaky suspicion that you may be dealing with more than one leak.