Hey guys, we've been having a problem with the van lately. It idles around 16-17:1 and it misfires about every 3 seconds. If I keep the idle up or put it in Neutral it's fine. I've replaced the AIS, TPS and throttle body altogether with no luck. It does it when it's warm and cold. The long and short term fuel trims we're normal, both very close to 0. I've even reset all the values. Driving around town it sits pretty at 14.7's, under load it's actually quite fat still at 19psi boost and roughly 61psi static. Plugs are new too.
Any ideas, guys?
-Bryan