What's this lovely sound?

[-Ryan-]

My truck started making this sound on acceleration from a stop.

 

[-Ryan-]

I guess this isn't a common problem. It sounds horrible. I report back what the dealer says for further reference.

 

[Fastback89]

IWE partially engaging?

 

[edouglas30]

I can’t remember the part but it is under 50.00. My 2017 did the same thing. I thought a turbo went bad.

 

[raisins]

IWE partially engaging?

My thoughts as well. Something with IWE probably.

 

[xgardx]

IWE vacuum line check valve probaby went bad. Mine just did last week as well @ 23k... sounds about the same. Should be a $10 part at dealer. Try to get the updated one that has blue on the check valve instead of white and black
Part number
FL3Z-3A788-A

If it’s not that probably something else in the IWE system

 

[SRK]

My truck started making this sound on acceleration from a stop.

My 2018 has been making this sound since I got it. It happens during acceleration (sometimes) and randomly when driving. My local dealer kept it for 2 weeks recently trying to diagnose the issue. I'll be interested to see what you find out.

 

[salts001]

I changed my IWE vacuum line check valve at around 5k miles. It started making the same noise at low speed acceleration intermittently. The dealer couldn't reproduce the sound so I picked up the $10 part and changed it myself. No more can crushing sound.

 

[bcampo]

definitely sounds like IWE check valve. just replaced mine. short term fix is to switch into 4A when you hear it.

 

[TxRap]

I had the same thing, and dealer replaced IWE hose and actuator. Get it replaced soon or you may grind your hubs to crap...