Poor fuel economy! - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 12-26-2010, 10:48 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2010
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Poor fuel economy!

I have a 2001f350 cclb 4x4 and I remember getting 17.75 mpg. I take excellent care of the truck and change oil every 3,000 and use the more expensive synthetic. I took it to the dealer because the toque converter check valve was bleeding the transmission in the summer, no issue other than it took up to 10 sec to engage and then would drive great until parked. They installed a new transmission 7/100k warranty at 104k. Great, let's get hauling, not so fast, terrible oil leak. I assumed it was the rear main! They insisted it was the injector pump, great replace it and let's get hauling? $1300 later it's on the road, hmmmm, still leaking. Ok they replace the rear mail. Let's get hauling?? Nope, still leaking, apparently the injector pump was not sealing, new gasket, let's get hauling??? Nope, still@ leaking. New injector pump installed, runs great. Fuel economy cruising 70-75 mph for 750 miles is just over 12? It's been this way for a while, vie considered doing upgrades but I'd like to get back to the 17.75 first. I have an edge attitude with juice set at mileage and an AFE air filter/intake setup. What can it be? I've noticed that the truck decelerates quickly almost as though it is downshifting and using the engine to brake. It also seems to take a lot of pedal to get it going. If I really get into the pedal it will go like crazy but I just don't drive that way. Brakes were replaced and rotors turned and the truck doesn't pull to one side. Something isn't right, please help! 15 mpg would make me pee!
Xenone is offline  
post #2 of 7 Old 12-26-2010, 02:49 PM
Banned
 
Join Date: Oct 2009
Location: Riverside/Norco, Ca
Posts: 3,771
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 2 reviews
ok wow first of all if your hpop was leaking... you dont replace it, you change orings... it could also be the orings on the turbo pedestal or the EBPV actuator valve...uh feels sluggish? are you sure they didnt accidently install a 15* hpop instead of a new 17*? you really should go to a trustworthy independent mechanic because obviously(no offense) you dont understand these motors and how things work.
Dietoremain is offline  
post #3 of 7 Old 12-26-2010, 08:12 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Dec 2010
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks but you're not offering help here.

Quote:
Originally Posted by Dietoremain View Post
ok wow first of all if your hpop was leaking... you dont replace it, you change orings... it could also be the orings on the turbo pedestal or the EBPV actuator valve...uh feels sluggish? are you sure they didnt accidently install a 15* hpop instead of a new 17*? you really should go to a trustworthy independent mechanic because obviously(no offense) you dont understand these motors and how things work.
It sounds like you know exactly what's going on here? I've never owned a diesel before, I tow all the time and used a 460 until I purchased this truck. I've been so busy working this truck I've taken no time to learn. With reckless trust I believed in my local dealer. Not doing this again, I think everyone handles business the way I do, guess not? Please give me a play by play on what I should do next. Thanks for any help you can offer, L.
Xenone is offline  
post #4 of 7 Old 12-26-2010, 10:52 PM
Banned
 
Join Date: Oct 2009
Location: Riverside/Norco, Ca
Posts: 3,771
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 2 reviews
Have you checked/changed your fuel filter recently? Thats alotta fuel to be wasting. When did the fuel mileage change?? it could definitely be winter blend fuel causing it to drop. If you have any more oil leaks check the areas i said.
Dietoremain is offline  
post #5 of 7 Old 01-05-2011, 11:39 AM
Compression Ignition Addict
 
away's Avatar
 
Join Date: May 2009
Location: Harrodsburg, KY
Posts: 166
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Check for fuel leak at fuel drain valve.....any leak that will go into the valley of the engine will drain out a rear exit hole in the block and drain down and look like a rear main seal leaking. Could explain low fule mileage and leak.

Adrian

2000 Ford Excursion
2001 F-250 Crew Cab Short Wheel Base
Pulling Trucks for Drag Racing
1978 mustang II 363 CI SBF
1972 Maverick 532 CI BBF
away is offline  
post #6 of 7 Old 01-08-2011, 07:27 AM
Member
 
Join Date: Nov 2010
Location: Ossian Indiana
Posts: 82
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
subscribed!

My mileage is a horrible 12.9 mpg right now.
buzzkill is offline  
post #7 of 7 Old 01-09-2011, 07:33 PM
dmd
Compression Ignition Addict
 
dmd's Avatar
 
Join Date: Oct 2008
Posts: 451
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
At 75 you wont get very good milage. Now that it is cold out, your milage
will drop also. Drive a half a tank and dont go over 65, accelerate like
your garandma and see what you get. Wont be the summer 17.5, but will be
about 16.6-17 in the winter. Even in Tx I get worse milage in the winter from
the "winter" blend fuel.

'00 F350 Supercrewzer Lariet, PSD, Auto, 3.73, CC, 4x4, SWB, SRW, 6-pos Chip, 6637 filter, 4-inch turbo back exhaust, Garrett 38r w/ high flow outlet, ITP overboost eliminator, AIH delete, Adrenaline HPOP, BTS Trans, Swamps IDM, In-tank & Pre-Pump mod, Heater Valve mod, X-car Sound Pannel mod, Train Horns / Packages: Trailer Tow, Camper, Off-Road. Overhead monitor DVD/TV/VCR (VCR under rear seat w/ 6 CD changer)
www.employees.org/~calridng (Offroad riding in California)
dmd is offline  
Reply

Tags
economy , fuel , improve

Quick Reply
Message:
Options

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:
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









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