Replay buzzing from passenger side causing the bronco to buck and sometimes die

[Renny_D]

I recently started getting a weird problem. There is a buzzing like a relay buzzing coming from the passenger side. When this happens the car misses and bucks and has actually died on me a few times. The buzzing will continue for a few seconds after I shut the car off. Any ideas what this is. I saw on another post where someone said they had the same problem and it was a relay behind the kick panel. They stated they just pulled the relay and the problem stopped. Any ideas on what the hell this is?

 

[dirtymike]

Look behind the glove box. The door sides squeezes past open to swing out and down. A black box mounted to a steel mounting plate with wires on a connector. Mine buzzed but i never had a issue with it, just noise.

 

[Renny_D]

So I disconnected the relay and the issue stopped. Can anyone tell me what the relay is for? It does seem like the engine while running smoother is now down a bit on power.

 

[Renny_D]

This is relay, the one at the Top right?

 

[Mechrick]

The EEC power relay and fuel pump relay are up there on the older ones. Usually when a relay starts occilating like that it's a weak ground...

 

[Renny_D]

Mechrick thanks, weak ground to the relay or weak ground on the battery ground?

 

[Mechrick]

Weak ground to the PCM. The PCM grounds at the negative battery cable through a black connector.