EcoBoost whistle and hoot sound - Ford F150 Forum - Community of Ford Truck Fans

Topic Sponsor
Engine / Drivetrain Talk 6 or 8 Cylinders? Come talk about it.

EcoBoost whistle and hoot sound

Old 07-05-2012, 01:36 AM
Thread Starter
AwfAxis's Avatar
Join Date: Jul 2012
Location: Truckee, CA
Posts: 33
Thanked 1 Time in 1 Post
Default EcoBoost whistle and hoot sound

New to this forum. Took delivery of an MY12 F150 FX4 EB S-CREW 3 weeks ago, and put on the obligatory 1000 miles before putting it into towing service.

Have a travel trailer which is about 5k loaded, and took it to Yosemite last week. On the uphill grades, whenever letting OFF of the accelerator, I would hear a owl hoot sound. Don't notice this so much when there is no load, but I am attributing this to the turbo releasing pressure.

This is just a guess however. I can hear it if the radio is off, but otherwise, it is not overly loud.

Is this normal, or is there some issue that requires a dealer visit?

Thanks for any info.

EcoBoost whistle and hoot sound-newrig.jpg
AwfAxis is offline  
Old 07-05-2012, 03:23 AM
Senior Member
zitterich246's Avatar
Join Date: Jun 2008
Location: NW Iowa
Posts: 915
Thanked 38 Times in 33 Posts

blow off valve
zitterich246 is offline  
The Following User Says Thank You to zitterich246 For This Useful Post:
AwfAxis (07-05-2012)
Old 07-07-2012, 01:43 PM
Senior Member
Join Date: Jun 2012
Location: MD
Posts: 184
Thanked 13 Times in 10 Posts

totally normal. it is the the bypass valve venting excess pressure.
FoX2012 is offline  

Thread Tools
Search this Thread
Quick Reply: EcoBoost whistle and hoot sound

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: