The 1991 Ford Probe, being a fuel-injected vehicle, doesn't have a readily accessible fuel shutoff switch like some older carbureted cars. Instead, the fuel system is controlled electronically. In the event of a crash, the fuel pump will typically shut off as part of the vehicle's safety systems. There is no manual override switch for this purpose.
To stop the fuel flow, you would need to disconnect the battery's negative terminal. This will cut power to the fuel pump. This is generally only recommended in emergency situations involving a fire or fuel leak.
