Not very happy with this truck - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by commtrd, this thread has received 97 replies and been viewed 21333 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 98 (permalink) Old 01-17-2011, 03:12 AM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 42
Points: 20,278
Thanks: 12
Thanked 3 Times in 3 Posts
Angry Not very happy with this truck

My mileage started out looking really good. I got 21.7 hand-calculated driving 65 on cruise control at 3000 miles. I thought this was awesome. But subsequent checks (hand calculated) kept showing the mpg dropping with more accumulated miles. Mileage had dropped to 18.4 at 65 mph on cruise at 10500 miles and using Cetane booster also. I just changed tires from 265/70/17 stock to 285/70/17 running 80 psi. These tires are 1 inch taller and 3/4 inch wider. Not a huge increase in size at all. However I lost 5.5 mpg at 65!!! Evidently it really does make a difference when the computer is not updated as to a change in tire size. I am going to get that done tomorrow. I am seriously thinking about getting rid of this truck. With diesel prices ramping up with no end in sight and my mileage falling off a cliff, I think I will lose this truck before it gets any more miles on it. I would definitely not recommend anyone buy one of these new ford trucks.
commtrd is offline  
Sponsored Links
Advertisement
 
post #2 of 98 (permalink) Old 01-17-2011, 03:31 AM
Senior Member
 
Hydro's Avatar
 
Join Date: Dec 2008
Location: Lakewood, CA
Posts: 307
Points: 26,460
Thanks: 24
Thanked 40 Times in 29 Posts
nice way to fly off the handle chances are you rarely had regens early on and resulted in great mileage. As the DPF got a little older you are probally regenerating more often.
1" taller and 3/4" wider makes a huge impact on mpg, plus you're registering less miles than actually driven with a larger diameter. To not recommend your truck solely on mpg is pretty sad, especially after reading your older post where you praised the reliability and creature comforts. Plus, name a manufacture who gets better mpg? They are all within 1-2 mpg of each other.

Last edited by Hydro; 01-17-2011 at 03:43 AM.
Hydro is offline  
The Following 3 Users Say Thank You to Hydro For this addition to TDG:
carco21 (02-13-2011), desertghosts (02-14-2011), Steel (02-15-2011)
post #3 of 98 (permalink) Old 01-17-2011, 03:48 AM
Junior Member
 
Join Date: Apr 2010
Location: Linn, MO
Posts: 147
Points: 46,911
Thanks: 30
Thanked 30 Times in 19 Posts
Quote:
Originally Posted by commtrd View Post
My mileage started out looking really good. I got 21.7 hand-calculated driving 65 on cruise control at 3000 miles. I thought this was awesome. But subsequent checks (hand calculated) kept showing the mpg dropping with more accumulated miles. Mileage had dropped to 18.4 at 65 mph on cruise at 10500 miles and using Cetane booster also. I just changed tires from 265/70/17 stock to 285/70/17 running 80 psi. These tires are 1 inch taller and 3/4 inch wider. Not a huge increase in size at all. However I lost 5.5 mpg at 65!!! Evidently it really does make a difference when the computer is not updated as to a change in tire size. I am going to get that done tomorrow. I am seriously thinking about getting rid of this truck. With diesel prices ramping up with no end in sight and my mileage falling off a cliff, I think I will lose this truck before it gets any more miles on it. I would definitely not recommend anyone buy one of these new ford trucks.
PM me some details on your truck...I may be interested in "taking it off your hands!"
fordmantpw is offline  
post #4 of 98 (permalink) Old 01-17-2011, 04:28 AM Thread Starter
Junior Member
Threadstarter
 
Join Date: Jul 2010
Posts: 42
Points: 20,278
Thanks: 12
Thanked 3 Times in 3 Posts
Angry

My truck is a crew cab / short bed XLT. Silver. Brand new bf goodrich 285/70/17 tires put on yesterday. Installed a ranch hand front bumper replacement. Extreme spray-in bedliner. 11450 miles. Truck runs great but mileage is steadily getting worse. Taking it to a Ford dealer in Houston tomorrow to try to find out what is happening. I don't think a tire size 1 inch taller and 3/4 inch wider is a huge difference but maybe it is and especially if the computer does not know the revs per mile has changed. Running 80 psi in tires. Truck is absolutely stock other than above-mentioned mods. I had a nagging feeling when I bought it that I should not have bought a first-year truck release to make sure all the bugs were worked out. Hopefully a dealer can help resolve the loss in fuel mileage. I have been running some cetane booster in an effort to stop the declining mileage but that didn't help. Weather has not been real cold in south Texas to have the diesel seasonal change so cannot attribute it to that either. Will post what the dealer tells me about what the problem could be.
commtrd is offline  
post #5 of 98 (permalink) Old 01-17-2011, 04:33 AM Thread Starter
Junior Member
Threadstarter
 
Join Date: Jul 2010
Posts: 42
Points: 20,278
Thanks: 12
Thanked 3 Times in 3 Posts
Re-gens actually became fewer in number as truck accumulated more miles. I am thinking possibly I could have gotten some dirty diesel at some time and the fuel filter may be plugging up. Just a guess. After hearing all the horror stories about the 6.0 and the 6.4's I am gunshy about these new drivetrains but hopefully Ford has gotten these right. The truck is a dream to drive but I don't want to end up with a truck that gets 4 mpg and diesel is at 6 or 7 dollars a gallon? Don't think it can't happen.
commtrd is offline  
post #6 of 98 (permalink) Old 01-17-2011, 05:09 AM Thread Starter
Junior Member
Threadstarter
 
Join Date: Jul 2010
Posts: 42
Points: 20,278
Thanks: 12
Thanked 3 Times in 3 Posts
I am not above getting a tuner and deleting ALL of the emissions junk if that is what it takes to make this truck run right.
commtrd is offline  
post #7 of 98 (permalink) Old 01-17-2011, 12:46 PM
Senior Member
 
Hydro's Avatar
 
Join Date: Dec 2008
Location: Lakewood, CA
Posts: 307
Points: 26,460
Thanks: 24
Thanked 40 Times in 29 Posts
Quote:
Originally Posted by commtrd View Post
Re-gens actually became fewer in number as truck accumulated more miles. I am thinking possibly I could have gotten some dirty diesel at some time and the fuel filter may be plugging up. Just a guess. .

That is actually a good place to start (fuel filters). I can't remember how many post I've seen where folks say that fuel filters fixed their woe's. Plus a $100 filter change (which you're due for soon anyway) is a lot cheaper than taking a hit on selling the truck.
Hydro is offline  
post #8 of 98 (permalink) Old 01-17-2011, 02:04 PM
Member
 
surveyor13's Avatar
 
Join Date: Dec 2008
Location: Canonsburg, PA
Posts: 88
Points: 24,152
Thanks: 1
Thanked 4 Times in 4 Posts
This has to be a joke. 18.4mpg and your complaining. The best I have gotten is 18.1mpg. I think you should have bought a VW Jetta TDI instead of a 8,000 pound brick if you wanted good mpg. What would you do if you were getting 13mpg like I am in PA running winter blend fuel. That's running empty and not hauling anything.

2012 Ford F350 Tuxedo Black King Ranch, 6.7L Powerstroke, SRW, Long Bed, 20" Wheels, etc......

Traded: 2011 Ford F350 White Platinum Tri-Coat, 6.7L Powerstorke Turbo Diesel, Lariat Ultimate Package, 20" Wheels, etc.......

*SOLD* 2008 Ford F-250, Black with Pueblo Gold, 6.4L Turbo Diesel, 285 65 R20E BF Goodrich All Terrains.

2006 Triton TR20X Bassmaster Classic Edition
surveyor13 is offline  
post #9 of 98 (permalink) Old 01-17-2011, 02:23 PM Thread Starter
Junior Member
Threadstarter
 
Join Date: Jul 2010
Posts: 42
Points: 20,278
Thanks: 12
Thanked 3 Times in 3 Posts
Not getting 18.4 with the new tires. I am getting 13.5 and that is not acceptable. Just got an oil change Saturday but recommended interval for the fuel filter is at 15k. I don't know if they can look at the differential pressure across the fuel filter while hooked up to reprogram tire size and revs per mile for the new tires. I really like this truck but I will not put up with any problems like this if they persist. If necessary I will go back with original size tires. I could well expect this if I went to say 35's but I just went a tenth less than an inch taller and almost .75 inches wider. That is not a huge difference in tire size. And maybe setting the computer for new tire size will fix it completely. I don't feel any real difference at all in the way the truck runs with the slightly larger tires. It will bust 'em loose at will and accelerates just the same. I am getting much closer to purchasing a tuner and deleting all the emissions stuff. Unless I just get a pre-2000 model ford and put a cummins in it. I believe this new engine has tons of potential in it just choked with all this emissions equipment. But the truck itself is incredible; and if it got 18 mpg consistently (not towing) I am OK with that. I am not OK with 13.5 mpg not towing anything and driving very conservatively. There has to be a problem for it to be doing that.
commtrd is offline  
post #10 of 98 (permalink) Old 01-17-2011, 05:58 PM
Senior Member
 
cobrat03's Avatar
 
Join Date: Dec 2008
Posts: 163
Points: 22,741
Thanks: 9
Thanked 4 Times in 4 Posts
I know for a fact all of our odometers are off on the 2011 even in stock form as much as 3%. I went from 33's to 35" Nitto Trail Grapplers and lost at least 2-3 mpg if not more but I knew this. My odometer is also now off 7.8%. If you do the math I should only be off 5.6% so I'm assuming that I was off over 2% stock. Once you check it and add the extra mileage I think you will find that you didn't lose as much as you thought. The computer calculated mileage my truck displays now is just about dead on to hand calculated mileage. And now that the winter fuel is here I have also lost another 1.5-2 mpg. I can consistantly get 16 mpg on the highway with my setup but not in the winter. Just my .02!

2011 F350 CC SB SRW LARIAT
2 CRAVE OFF ROAD WHEELS 20 X 9
NITTO TRAIL GRAPPLERS 35 X 12.50 X 20
RECON LIGHTS
COLOR COATED GRILL SURROUNDING
H&S BLACK MAXX
4" DPF DELETE EXHAUST
S&B INTAKE
cobrat03 is offline  
The Following User Says Thank You to cobrat03 For this addition to TDG:
Hydro (01-17-2011)
Reply

Quick Reply
Message:
Options

Register Now



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

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

Password:


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

Email Address:
OR

Log-in










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



Similar Threads
Thread Thread Starter Forum Replies Last Post
Am I going to be happy???? Silver_Stroker 2003-2007 6.0L Power Stroke 35 01-29-2009 07:51 PM
boy am i happy!!!!!! imported_newtodiesel 2003-2007 6.0L Power Stroke 2 02-14-2008 01:23 AM
HAPPY HAPPY JOY JOY!!! Truck Fixed StrokerDude 1994-2003 7.3L Power Stroke 1 01-11-2007 08:34 PM
Happy to be here Diesel65 Introductions 10 11-27-2006 02:58 AM
Happy 4th! SeeYa Supporting Vendors Forum 0 06-28-2006 08:48 PM

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 On
Pingbacks are On
Refbacks are On

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