6.7 making humming noise when turned off! - Ford Truck Enthusiasts Forums



6.7L Power Stroke Diesel 2011-current Ford Powerstroke 6.7 L turbo diesel engine
Sponsored by:
Sponsored by:

6.7 making humming noise when turned off!

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 12-07-2017, 02:49 PM
longrange1971 longrange1971 is offline
Junior User
Thread Starter
 
Join Date: Jan 2015
Posts: 65
longrange1971 is starting off with a positive reputation.
6.7 making humming noise when turned off!

Hello all,
Recently (past couple months) I have noticed that the truck makes a humming noise shortly after turning off the ignition. It almost sounds to me like a pump of some sorts thatís trying to prime itself. It seems to be lasting for over a minute and lasting longer as time goes on. Does anyone know what this could be. Definitely coming from engine compartment.

Thanks
Reply With Quote
  #2  
Old 12-07-2017, 02:53 PM
Just Strokin Just Strokin is online now
Postmaster
 
Join Date: Nov 2001
Location: Tallassee, ALabama
Posts: 3,164
Just Strokin is a splendid one to beholdJust Strokin is a splendid one to beholdJust Strokin is a splendid one to beholdJust Strokin is a splendid one to beholdJust Strokin is a splendid one to beholdJust Strokin is a splendid one to beholdJust Strokin is a splendid one to beholdJust Strokin is a splendid one to behold
It might be the DEF pump sucking the DEF out of the line. This is one of the sounds heard when you shut off the truck.

Have you searched the forum? There are some threads about various engine compartment sounds. I don't worry about the sounds now days as long as they are not coming from the truck the next time i go to drive it. lol
Reply With Quote
  #3  
Old 12-07-2017, 03:41 PM
F250_Super_4X4's Avatar
F250_Super_4X4 F250_Super_4X4 is online now
Senior User
 
Join Date: Mar 2016
Location: Tennessee
Posts: 399
F250_Super_4X4 is gaining momentum as a positive member of FTE.
You may be hearing vacuum bleeding off also
Reply With Quote
  #4  
Old 12-07-2017, 03:51 PM
camminich's Avatar
camminich camminich is offline
Senior User
 
Join Date: Aug 2016
Location: Ocean Shores, WA
Posts: 132
camminich is starting off with a positive reputation.
Is this with key out the ignition, and for a few seconds, or minutes? I know mine, and other 6.7s I have heard all have their clicks and hums on shut down. And just depending on how far I traveled and how hot the engine is seems to factor how many noises it makes. And that said, none sound out of the ordinary or mechanically bad.

I do notice the sounds are less if I allow the truck to sit in P for about 45 seconds before turning it off, usually then just the DEF pump, and something else that clicks under the hood. Never longer than 20 seconds though.
Reply With Quote
  #5  
Old 12-07-2017, 04:21 PM
F250_Super_4X4's Avatar
F250_Super_4X4 F250_Super_4X4 is online now
Senior User
 
Join Date: Mar 2016
Location: Tennessee
Posts: 399
F250_Super_4X4 is gaining momentum as a positive member of FTE.
The click under the hood is typically your EGR valve losing vacuum
Reply With Quote
  #6  
Old 12-07-2017, 04:39 PM
NDE NDE is offline
Freshman User
 
Join Date: Jan 2017
Posts: 39
NDE is starting off with a positive reputation.
Depending on your year it is most likely the wastegate at the turbo. a search will have many post on it. Dealers used to replace but now say it is nothing to be concerned about.
Reply With Quote
  #7  
Old 12-07-2017, 07:25 PM
kper05's Avatar
kper05 kper05 is offline
Post Fiend
 
Join Date: Jan 2010
Location: AL
Posts: 5,355
kper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant futurekper05 has a brilliant future
It's the waste gate control valve. It sounds like a muffled mini 12v air compressor. Mine will start buzzing 30 seconds after shutdown and while the engine is idling. It's loud enough now I can sometimes hear it at idle outside of the cab and started doing this about 14 months ago. It didn't do this for over 70,000 miles but it's now considered "normal." I'm planning to ask about it again when my truck is at the dealer next week for other issues to see if I get a different answer. The TSB was 13-10-7.
Reply With Quote
  #8  
Old 12-07-2017, 11:04 PM
DeeDubz's Avatar
DeeDubz DeeDubz is offline
Senior User
 
Join Date: Jan 2012
Posts: 374
DeeDubz is starting off with a positive reputation.
most likely waste gate control valve. Mines been doing it for over a year. You can replace the harness / solenoid to the waste gate to get rid of the noise but it doesn't not damaging your truck.
Reply With Quote
  #9  
Old 12-08-2017, 12:20 AM
UP_There's Avatar
UP_There UP_There is online now
Post Fiend
 
Join Date: May 2007
Location: Flagstaff, Arizona
Posts: 5,149
UP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud ofUP_There has much to be proud of
Mine makes a slight noise every single time after I shut it off, for about 15 seconds, then it stops.
Reply With Quote
  #10  
Old 12-08-2017, 01:09 AM
falconetti falconetti is online now
New User
 
Join Date: Dec 2006
Posts: 21
falconetti is starting off with a positive reputation.
turbo spins for a bit after its shut off.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
06 f350 weird electrical hum from transmission pan wrxin 1999 to 2016 Super Duty 0 09-02-2017 12:23 AM
6.7 hum/ buzz noise after shutdown jethrodean 6.7L Power Stroke Diesel 12 04-02-2017 07:17 AM
2005 ford expedition front humming noise ac eddieniner 1997-2006 Expedition & Navigator 2 05-14-2016 12:00 PM
6.7 noisey fuel pump.... bobsplus 6.7L Power Stroke Diesel 5 01-25-2016 04:40 PM
loud humming noise buddy316 1997-2006 Expedition & Navigator 3 12-10-2015 10:12 AM


Go Back   Ford Truck Enthusiasts Forums >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 05:40 PM.


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 Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: