So here is the deal. When I start my pathy in the morning and drive to work everything is ok. When I get to work i shut the car off and go inside the office. I come outside 20 minuets later and start the pathfinder. I put it into reverse and this is where it craps the bed. The engine starts to idle really rough and starts to sputter. If you let it go long enough it will die. So does anyone have any ideas. I have changed the cap, rotor, plugs, wires, fuel filter, air filter, cleaned the mass air flow sensor, cleaned the throttle body. What else can I do? Please help me guys I am trying to get it running again. I forgot to add that I can drive the vehicle still. When you keep the rpms up it doesnt try to stall out.