if the car is in park or neautral and you step on the gas pedal nothing happens on 2004 Lincoln LS

asked around nobody can tell me what the problem is. don't want to go to the dealer to have them over charge me.when i step o the gas pedal when the car is in park or neautral nothing happen.i have a 04 lincoln ls

Asked by for the 2004 Lincoln LS
If anyone is still reading this question, I had similar problem, but even when not in park/neutral the gas pedal wasn't working - unfortunately, it was the catalytic converter and various sensors associated with it. Mine stalled out in midtraffic - be careful!