I have a 93 Mustang 5.0 with the fuel pressure set at 35 lbs. Lately I've been having a problem with it idling funny...sometimes it idles fine and other times it just quits. With it idling, I've tried disconnecting the eletrical connection to the air idling sensor, give it gas, and it still idles with it disconnected...is that supposed to happen? Everything is stock with an Accufab 65mm throttle body and a K&N filter. It started after I fixed a vacuum leak and bumped the fuel pressure up. Might it be the air idling sensor or a different problem?