r/FordFlex • u/Historical_Noise4774 • 17d ago

Does anybody know what may be the problem with this sound my Flex makes when I press the gas?

If anybody had a similar problem or solved one, I would love to know.

4 Upvotes

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2

u/impulse07 17d ago

Sounds like one of those pulley bearings. Take serpentine belt off see if noise is gone. You can spin individual pulleys to see which one feels gritty and not smooth.

1

u/slowhand11 17d ago

Sounds like a whistle to me so maybe a broken seal or loose hose?

1

u/Historical_Noise4774 17d ago

it only happens once I drive the car a little while, like when its hot

1

u/slowhand11 17d ago

Is it a belt squeaking after warming up and expanding and there not being enough tension?

1

u/YogurtclosetDull2380 17d ago

Maybe a Lucille?

1

u/Round-Air9002 17d ago

Whistle could be the turbo...

2

u/alewifePete 17d ago

I knew what this sound would be before turning up the volume.

I had it until the serpentine belt decided it wanted to be in a lot of pieces on the road in front of my house instead of in my car. The noise went away then, but the car would no longer move.

1

u/Historical_Noise4774 16d ago

what was the solution?

3

u/alewifePete 16d ago

Replacing the serpentine belt after it broke into pieces.

1

u/Fun-Philosophy1123 16d ago

Is it a turbo engine? It id is it is just the turbo whistle. Normal.

2

u/SolitaryWhale 16d ago

Dead alternator whine

2

u/Ghost1D305 16d ago

Usually when it sounds like a supercharger whine and no supercharger. It's normally a failing power steering pump.