Hi All,

I was hoping someone could provide their expertise.

My 96 C280 was sitting for 2.5 months.
I connected jumper cables, went to start it, and it turned over but wouldn't fire up.
I checked the fuel rail in the engine compartment and it was dry.
I jacked up the car and noted that I was not getting electricity where the wires attach down at the pump (under the car), so I bought and installed a new Fuel Pump Relay.
I still am not getting any electricity where the wires connect to the Fuel Pump.
I've checked the female nodes that the Relay plugs into, and they are Hot.
Upon checking the other connection (the two-pronged plug just above and to the left of the Relay) - neither of the prongs, female or male, are getting any electricity at all.
The key was in the 'on' position at the time.

Can anyone help me diagnose this?

Thanks,
John

 

try jumping the relay, see if that works. If it does, then the relay you got was faulty. Also check the fuse and make sure that its ok. If that still doesn't work, check the wires for an open. Don't forget, that with the key in the on position, you will only get power to the fuel pump for a few seconds, try cranking the car while checking for power.