Cranked the truck up this morning to let it warm up. Went back out and it sounded like it was about to blow up. Stabilitrak light was on and check engine. I cut it off and let it sit for a while, disconnected the battery and now there's no check engine or stabiltrak light. It seems to be idling right at 500 when in drive. In park, it's about 7-800. I went ahead and changed the mass air flow sensor out. It has the AFM delete chip in it so I'm assuming that's not the problem. I drove it 30 miles to work and no lights came back on, but it still seems to be idling low. Another thing, if it's in park and I rev it up, it seems to be taking longer to come back down. Could it be the throttle body?
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