Nissan Pathfinder is reving up and down in park and sputtering in drive
We recently bought a 2002 Nissan Pathfinder. It was revving up and down in
park, but ran fine in drive. We were told that we needed a new TPS sensor
so we bought that and changed it. It still revs up and down in park and now
it sputters occasionally when its in drive. We thought that it might be the idle
control valve but we just changed that. Any suggestions on what we should
do next?