When crossing a speed hump or any oher obstacle, the engine stalls.

There is no current reaching the distributor. I've already changed the module, rotor, spark plugs, wires, distributor cap and the coil. The only way to make it start is by connecting a wire directly to the coil. Occasionally, it also happens that, when driving at high speeds, the current is suddenly cut, causing the vehicle to stall. I've even replaced the contactor in the steering column and the ignition switch contact drum. I would appreciate your help.