MPG went up?? - Ford Powerstroke Diesel Forum
General 6.7 Discussion General 6.7 Discussion

User Tag List

LinkBack Thread Tools Display Modes
post #1 of 2 Old 01-14-2013, 07:02 PM Thread Starter
palmettopowerstroke's Avatar
Join Date: May 2012
Location: Greenville, SC
Posts: 50
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
MPG went up??

Usually you hear about people's MPG going down, well mine went up this week. Last week I got the "Speed limited in 50 miles. Exhaust system fault." DEF had about 500 miles left in the tank. Drove a few miles and the error message went away. When I filled up a day or so later I reset the mileage and noticed better fuel economy. Figured it would go away, but I'm almost on empty and at 14MPG. Was getting about 12.5. Same driving habits (85% city unloaded). Oddly this tank hasn't seen the highway at all. Been 100% city driving and still 14mpg. Previously I saw 16 highway and 12.5 city. I used to see about 14 city and 18-19 highway when I first got my truck, but that went away about the same time I went with off road tires. I figured the drop in MPG was the tires, but I'm not so sure now. I'm also noticing far less regens. Only 2 this tank. Before the error message it seemed like I was constantly in regen (causing the bad MPG I assume).

Anyone else experience this or can offer any wisdom? Worth taking in to see if there are any updates/re-flashes needed?
palmettopowerstroke is offline  
Sponsored Links
post #2 of 2 Old 01-14-2013, 11:53 PM
bbc109758's Avatar
Join Date: Jan 2012
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Red face

My truck always had freqent regens 75-125 and always said somthing wrong. My selling dealer charged me 128 to hook up ids and said its fine even when i said no. Months later i asked a different dealer about a different part that went bad so i could fix it myself so no surprise its normal and will cost you now pay up, but this one said let us fix your other part and check out regen problem NO Charge. Ok but there shop very busy and had for 3 long days but result was ids so good till test drive and then the readings all over the place and they found lose ground on wiring now get close to 200 miles between regen and longest 350 miles and have 30000 on ticker with half all regens in notebook. Hope that might help
bbc109758 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome