Help Idle Problem 90 SOHC 240sx

[Kamakaziracer89]

Ok Guys im stumped on this one. I ran a Moc Vacuflush through my car through the Hose going to the Charcoal Cansiter Purge valve. And ever since i Ran it through my cars Been Idling at around 1500RPM when its Warmed up. I replaced the ACC valve And tried to adjust the idle and nothing changed. When ever i turn the Steering wheel to Lock or the engines Could or when i have My blowers going full blast and my high beams on the idle drops to around 1300. Oh yeah and i keep getting an intermittent EgR Function code. But thats only if i use any kind of gas Besides Chevron. Any Ideals on what could be causing it?