It was doing it all the time. I just put the throttle body and IAC on it about a month ago when I put a ported intake on it. I do not have a check engine light because I took it out. No EGR hooked up. Got tired of looking at it. After I cleaned the IAC up it slowly went down after about 5 min of runtime. IT has happened before but all I had to do then was unhook the battery and it went back down. But it is fixed now. I hope. Thanks
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