I just put a brand new engine in my Pontiac g8 08 and I'm trying to get it to stay idle I have a p0315 I can't get it to stay idle to relearn and I'm not sure what else to look for I replaced the new sensor that came with the engine with the old one in the other engine Wondering if I can just disable the code. In hpt my tuner put the tune that came with the blueprint engine on my ecm