Polterguist or Wiring Harness

[WRS]

I've got a 94 e320.
Here is the problem:

When a person sitting in the front passenger seat pushes down on the floor about where the break pedal would be if he / she was driving in England, the throttle is cut.

That is, if the pressure is applied and I try to start from a start, the car lurches forward and the engine bounces between about 1000 and 1500 RPM.

If I am cruising when pressure is applied, it's like I let off the throttle.

Keep in mind, that in neither situation does the car stall or shut off.

Is the car's computer located under this location?

I'm scared this is a sign of worse things to come.

Thanks.