Relay Ratcheting

[NicksGTR]

Every time I open the driver's door on my 2019 EB, I hear a ratceting sound from the engine bay. I am assuming this is a relay rapidly opening and closing but have never experienced this sound on any other vehicle? My mustang was purchased used @ 20k and this sound has persisted since purchase.

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[Bluelightning]

When you open your door, the fuel pump primes, and other stuff happens. Completely normal noises.

 

[Dadillac]

Low pressure fuel pump in the gas tank

Don

 

[Cobra Jet]

This is what you're seeking, fuel pump prime:

https://www.mustang6g.com/forums/th...ally-opening-driver-door.106779/#post-2375824

 

[NicksGTR]

This is what you're seeking, fuel pump prime:

https://www.mustang6g.com/forums/th...ally-opening-driver-door.106779/#post-2375824

Thanks Cobra Jet! This my first DI car so everything said in this thread ^ makes a lot of sense.

 

[Cobra Jet]

Thanks Cobra Jet! This my first DI car so everything said in this thread ^ makes a lot of sense.

No problem, glad it helped to explain things a little more, as a few of us had the same sounds/concerns and the linked thread enlightened us too.

 

[geep81]

Thanks Cobra Jet! This my first DI car so everything said in this thread ^ makes a lot of sense.

I’m Im pretty sure every Ford I’ve had going back to 80s models has done this fuel prime thing. I associate it with Fords.

 

[NicksGTR]

I’m Im pretty sure every Ford I’ve had going back to 80s models has done this fuel prime thing. I associate it with Fords.

No, not like this. I've installed fuel pumps from fox bodies with a return system to SN95's 2 & 4V non return and have never heard anything like this. Maybe a whine from the rear of the car when the ignition is turned on, but nothing more.

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