Strange knock sound from fuel tank in Badlands

[DMDS]

anyone know what is it? I was sure that RDU but now I'm sure this is sound from fuel tank on left (driver) side.

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[Dude]

Can you give it some gas and see if the sound speeds up with rear wheel spinning faster

some have reported an object gets onto or against the drive shaft which can be hard to see

 

[DMDS]

the frequency is the same when i have 5mph or 40mph

 

[Dude]

Agree with you it’s the fuel pump most likely

 

[Escape2Bronco]

anyone know what is it? I was sure that RDU but now I'm sure this is sound from fuel tank on left (driver) side.

Sounds like a relaxed heartbeat. I would guess a fuel pump based on the 50 to 60hz cadence.

 

[Brent@ANParts]

That's a weird one! But I agree it is most likely the fuel pump, as it's clearly coming from within and the steady rate confirms it's nothing mechanical on the exterior. I wonder if the pump broke loose and every time it actuates it moves around, causing the noise.

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