Do we have an iac on these trucks with the 3.0? My idle likes to drop and sound like she is loping. No miss fire. The truck accelerates choppy in any gear until after 3k. The whole truck jerks back and forth. Has gradually gotten worse and I can't handle it anymore. Sometimes it will idle as high as 2k but never over. I wouldn't think it would be the tps. Maybe the ignition coil?