Help: Truck stalled
My truck stalled today. I just replaced plugs wires and air filter within the past 2 weeks, and it was running fine. I went and picked up a fuel filter today, and in the parking lot when I put it in park, the idle went down and almost stalled, then went back up. Then when I got home, as soon as it went into park idle went down and stalled. I haven't put the fuel filter in yet, but could that be the problem? I don't know when it was changed last. Is there anything else i should look for?
2001 4x4 offroad, 4.0L, Body lift, 285 BFG A/T