Assuming you mean fuel PUMP relay, it is the remote switch that turns the fuel pump on and off. If it fails, your engine will not run.
A fuel pump relay switch can cause your car to stall after starting. A malfunctioning fuel pump relay switch can cause your car to not start at all.
can a fuel relay fuse make car not start? If the fuse or the relay is bad, yes.
If the fuel system is still holding pressure the car will start and run until the fuel runs out, The relay turns on the fuel pump.
Take out the fuel pump relay
If the relay is not supplying power to the fuel pump, then no fuel to the motor. No fuel - no power.
What car, what model
Fuel pump or fuel relay is going
Yes; if your fuel pump relay fails you will not get fuel to your motor and your vehicle will not start.
On a 1998 Lincoln Town Car : In the Power Distribution Box ( which is " live " ) located in the engine compartment ( relay # 1 is the fuel pump relay )
fuel relayIn my 1992 Lincoln town car the fuel relay is under the hood on the driver side next to the windshield wiper fuild container.
the fuel pump relay on the Mercedes E320 in underneth the car itself.
on the car