Belt slipping?

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Flight-ER-Doc

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Hi, everybody!

2015 Expy EL LTD, ecoboost (of course).

On occasion (not repeatable), when I'm accelerating from maybe around 30 mph and putting the engine under a bit of a load (usually while going up a freeway on-ramp) I get a screeching sound like the belt is slipping.. I back off the throttle right away and the noise goes away, then I can accelerate normally.

It sounds like maybe it happens when the high-speed turbo starts to kick in.

Anyone else have a similar problem?

TIA
 

99WhiteC5Coupe

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I have a 2015 Expedtion Limited 4x4, purchased new, now with 31,*** miles. I have never had the sound that you describe.

How many miles on the engine? Still under the new-car warranty?
 
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