MPG Head Scratching
Laughing Gas
Joined: Feb 2009
Posts: 914
Likes: 1
From: New Braunfels, Texas
Did you have the tranny flash?
I have my truck in the shop now for the same issue
I went from 18.2 to 15.2
Ford said there is nothing wrong
But i went months at 18 then after tranny flash 2 weeks later i noticed it was going down. I reset and have been averaging 15 sense.
I have my truck in the shop now for the same issue
I went from 18.2 to 15.2
Ford said there is nothing wrong
But i went months at 18 then after tranny flash 2 weeks later i noticed it was going down. I reset and have been averaging 15 sense.
eta - here's the link, conversation starts on post 352 : https://www.ford-trucks.com/forums/1...4-21-a-24.html
Thread Starter
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Junior User
Joined: Nov 2010
Posts: 78
Likes: 0
From: Illinois
Yes, I did have the Trans Flash done a few weeks ago. I have had only one 2-3 slip in 2k mi but, happened to be at my dealer to discuss an issue with my wifes Expedition and ask them if they would do it and they said sure. I remember the 6.7 tech telling me the trans would go thru a new learn process, which I knew. He also mentioned that there would be a new "Idle Learn" which I have never heard of. The tech indicated it would idle a little rough for awhile. I have noticed it appears to be a little louder during idle, maybe it is sipping a little more fuel during brief idle times.
Just trying to observe and learn the trucks habits when it is healthy, so I am conscious when this 62K animal isn't feeling well.
Just trying to observe and learn the trucks habits when it is healthy, so I am conscious when this 62K animal isn't feeling well.
Posting Guru
Joined: Oct 2010
Posts: 1,777
Likes: 0
Yes, I did have the Trans Flash done a few weeks ago. I have had only one 2-3 slip in 2k mi but, happened to be at my dealer to discuss an issue with my wifes Expedition and ask them if they would do it and they said sure. I remember the 6.7 tech telling me the trans would go thru a new learn process, which I knew. He also mentioned that there would be a new "Idle Learn" which I have never heard of. The tech indicated it would idle a little rough for awhile. I have noticed it appears to be a little louder during idle, maybe it is sipping a little more fuel during brief idle times.
Just trying to observe and learn the trucks habits when it is healthy, so I am conscious when this 62K animal isn't feeling well.
Just trying to observe and learn the trucks habits when it is healthy, so I am conscious when this 62K animal isn't feeling well.
These trucks have so much going on electronically, at times it is hard to say what is normal. Recently, I have been hearing this chirp about a minute after shutdown. Never did it all winter, now it chirps....
Senior User
Joined: Nov 2010
Posts: 376
Likes: 1
From: Tempe, AZ
In spite of that, a couple of months ago, I was idling my way through a campground (with the driver's window rolled down), and a guy on foot who I passed did a double-take and said, "that's the quietest diesel I've ever heard."
When it gets to be one quarter as loud as my '05 and previous diesels were, or one eighth as loud as the Mopoor (sic) Cummins I heard last Saturday night, I'll start to worry.
Joe
Laughing Gas
Joined: Feb 2009
Posts: 914
Likes: 1
From: New Braunfels, Texas
I thought I heard mine chirp once while walking away from it, decided I must be crazy. Now I'm wondering if it really did and what it might mean?
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
There are several post shutdown noises well documented by EpicCowlick and others. Search for them, Epic's video's are fun to watch.
That chirp is a vacuum release of the egr valve (I think)
That chirp is a vacuum release of the egr valve (I think)
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Posting Guru
Joined: Oct 2010
Posts: 1,777
Likes: 0
I haven't seen this one in any of the Epic productions. And never heard it until the temps got over 90. Maybe we should encourage Epic to make a musical based on the sounds of the Super Duty!
Posting Guru
Joined: Oct 2010
Posts: 1,777
Likes: 0
I thought I read in another thread that the computer gets reset for mpg's and actually calculates them to truer number after the flash - that preflash it's reporting higher than what is real. I'll see if I can find it. The suggestion is to hand calculate a couple of tanks and see how those numbers compare to the computer.
eta - here's the link, conversation starts on post 352 : https://www.ford-trucks.com/forums/1...4-21-a-24.html
eta - here's the link, conversation starts on post 352 : https://www.ford-trucks.com/forums/1...4-21-a-24.html
The MPG reported on the instant MPG screen is actually a time based calculation of MPG. It is usually off quite a bit.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 83
No, none of you are crazy. There are all sorts of noises.
The transmission pan makes some sort of noise whenever it feels like it.
With the key nearby or in the house through many walls; locked or unlocked.
For the chirp, I think he does have a video somewhere or if not Epic, someone posted one showing the actuator move.
I remember several of us discussing the chirp; or a drop of water into a small pool in a cave with good acoustics is how I describe it.
Followed by three series of two clicks (on/off on/off on/off).
Something activates when you slide the key into the ignition, too. Even before turning the key.
The transmission pan makes some sort of noise whenever it feels like it.
With the key nearby or in the house through many walls; locked or unlocked.
For the chirp, I think he does have a video somewhere or if not Epic, someone posted one showing the actuator move.
I remember several of us discussing the chirp; or a drop of water into a small pool in a cave with good acoustics is how I describe it.
Followed by three series of two clicks (on/off on/off on/off).
Something activates when you slide the key into the ignition, too. Even before turning the key.
Laughing Gas
Joined: Feb 2009
Posts: 914
Likes: 1
From: New Braunfels, Texas
Something activates when you slide the key into the ignition, too. Even before turning the key.
Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
No, none of you are crazy. There are all sorts of noises.
The transmission pan makes some sort of noise whenever it feels like it.
With the key nearby or in the house through many walls; locked or unlocked.
For the chirp, I think he does have a video somewhere or if not Epic, someone posted one showing the actuator move.
I remember several of us discussing the chirp; or a drop of water into a small pool in a cave with good acoustics is how I describe it.
Followed by three series of two clicks (on/off on/off on/off).
Something activates when you slide the key into the ignition, too. Even before turning the key.
The transmission pan makes some sort of noise whenever it feels like it.
With the key nearby or in the house through many walls; locked or unlocked.
For the chirp, I think he does have a video somewhere or if not Epic, someone posted one showing the actuator move.
I remember several of us discussing the chirp; or a drop of water into a small pool in a cave with good acoustics is how I describe it.
Followed by three series of two clicks (on/off on/off on/off).
Something activates when you slide the key into the ignition, too. Even before turning the key.
YouTube - ‪2011 Ford Super Duty EGR Valve Actuating‬‏
Thread Starter
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Junior User
Joined: Nov 2010
Posts: 78
Likes: 0
From: Illinois
Completed the same RT as before, the only difference was the bed cover was on. Did have a regen halfway thru the trip. Mileage average at the end of the trip was back to 18.5 I am still confused but relieved as I was wondering why the 2mpg sudden drop.
Could it be, the documented proof of the exposed bed, air flow, bubbles and etc dont account for things such as long beds, or the fact that the rear of the bed is more elevated than the front of the bed causing a different air flow around and over the entire truck.
Could it be, the documented proof of the exposed bed, air flow, bubbles and etc dont account for things such as long beds, or the fact that the rear of the bed is more elevated than the front of the bed causing a different air flow around and over the entire truck.