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Ford Powerstroke MPG


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  #1  
Old 01-02-2009, 07:21:45 PM
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casesteam12 casesteam12 is offline
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Default Ford Powerstroke MPG

Help! I recently purchased a 99 F 350 with a 7.3 powerstroke. I was under the impression that these diesels would at least average 15 mpg running around. Am I dreaming? I'm getting 11 mpg and thats not letting it sit and idle for a long time in the morning when its cold. Can any of you other guys help me on trouble shooting or ideas what I can do to improve this? Or should I expect this in the winter time? Any info would be greatly appreciated.

Thanks , Brad
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Old 01-02-2009, 07:29:02 PM
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Default Re: Ford Powerstroke MPG

It will probably get less in cold weather.
Has the air and fuel filters been changed lately?
What mileage do you get on the highway?
My friends gets 16 to 17 at 70mph with his Ford of the same year.
My Dodge will do 18, sometimes 18.5 with 4:10 gears. 3:55's seem to get about 2-3 mpg more.
What gears are in your truck?
Mikey
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Old 01-02-2009, 07:35:54 PM
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Default Re: Ford Powerstroke MPG

All filters have been changed recently.
I havent had a chance to take it on a trip to see what it will get.
4:10 gear ratio
I also should have mentioned it is 4x4
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Old 01-02-2009, 07:58:05 PM
Skip Landis Skip Landis is offline
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Default Re: Ford Powerstroke MPG

97 dodge cummins, 20 1/2 around town. 14 to 16 with the trailer loaded on the road. skip
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Old 01-02-2009, 08:03:09 PM
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Default Re: Ford Powerstroke MPG

1992 Cummins 12V Dodge D250 4X2 17 around town, 19-21 on hwy. depending on load and terrain.

Denny
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Old 01-02-2009, 08:13:57 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Ford Powerstroke MPG

One of the guys we travel with says he gets 19-20 on the highway, 14 towing with an 03 Ford F250. His mileage computer showed 15.8 when we hooked up the trailer,10.8 after we were on the road a while. He told people at the show he was getting 14, cost the same to fill it as when you're getting 10.8. My 03 Duramax 2wd gives 15.5 all around, towed a light trailer to Portland and got 15, was a little disappointed, thought I would get what others claim to get.
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Old 01-02-2009, 08:21:14 PM
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Default Re: Ford Powerstroke MPG

Allow me to rephrase this thread. What would or have any of you done to a 7.3 Ford diesel to improve mileage? Chips? Exhaust or ?
Thanks,Brad
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Old 01-02-2009, 08:41:42 PM
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Default Re: Ford Powerstroke MPG

For a 99 truck I would do a cold air intake, 4" turbo back exhaust w/ no cat and a free flow muffler, and a chip from either total diesel performance or dp tuner with daily driver, economy and tow tunes. You could also run taller tires, just remember to recal the speedo.

11mpg doesn't sound too bad if you're running that crap ulsd winter fuel in cold weather. My 97 truck is heavilly modded, dynoed 367 rwhp w/ 4:10's and I regularly see 18mpg running 70-75 on the hwy. Personal best is just over 22. Towing 8000lbs @ 65 I get about 13mpg. I always loose 2-3mpg in winter and it comes back late spring when the stations switch back to regular ulsd. I lost about 1.3mpg during the switch from lsd to ulsd fuel.
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Old 01-02-2009, 09:54:54 PM
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Steve Kunz Steve Kunz is offline
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Default Re: Ford Powerstroke MPG

Fuel does make a big difference. My friend owns a trucking company, they haul sand and gravel to concrete companys. He said they switched brands of fuel and the milage on the tractor trailers went from 3 to 5 miles a gallon.
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Old 01-02-2009, 10:29:32 PM
Keith E. Keith E. is offline
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Default Re: Ford Powerstroke MPG

dont want to sell a product here, but check on K&N filters. Winter fuel stinks when it comes to milage, dodge down 3mpg, Alot of upgrades out their for diesels, be careful of the power, it can be unlimited but with consiquinses ug spellin
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Old 01-03-2009, 01:34:48 AM
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Default Re: Ford Powerstroke MPG

I have a 2000 power stroke in a 250 with 3:55, all factory. Summer on the road with just the truck which weights in at 8500# then put 4 or 5 guys in the truck, I can get 18 to 20 on the road. When you take the RPMs over 2000 you start to loose mileage. Winter with short runs and some warm up time I get 10 to 13. If I run BP fuel ( which is all I run) I get better mileage. As far as the K &N filter, I put one in, when the truck was 6 months old because every body was saying you can get better miles, nope, did not make any difference on mine. Still love the truck, went to PA this past summer with a gooseneck and came back with a CGVW of just over 25,000. Pulled hard in the mountains and still averaged about 11 to 12.

My 2 cents worth,
Jim
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Old 01-03-2009, 07:44:38 AM
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Default Re: Ford Powerstroke MPG

K&N might be ok on a gasser but I wouldn't put one on a diesel. Better off with something that will actually flow some filtered air like AFe or Tymar.
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Old 01-03-2009, 09:45:45 AM
Ray Freeman Ray Freeman is offline
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Default Re: Ford Powerstroke MPG

I have a 97 F350 Powerstroke and on country trips I can sometimes get 19.5 mpg unloaded doing 65 mph. Loaded with a trailer and grossing around 6 ton its around 15 or 16. Towing a 22 foot van weighing 3 tonne about 13.5. Its chipped for a bit more power and remember our Aussie gallons are a bit bigger than yours.
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Old 01-03-2009, 01:51:40 PM
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Default Re: Ford Powerstroke MPG

Ray, What chip did you purchase for this truck? Thanks ,Brad
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Old 01-03-2009, 06:47:28 PM
Ray Freeman Ray Freeman is offline
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Default Re: Ford Powerstroke MPG

Its a Banks 40 hp chip and it came with the downpipe as well.It also incorporates the transcommand chip for the transmission. Made a big difference. You can get a lot more power out of the 7.3's what I wanted to retain reliability as well. Its done 11 years of towing so far with zero problems
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Old 01-04-2009, 11:46:36 AM
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Default Re: Ford Powerstroke MPG

Avoid the K&N replacement filters for the powerstrokes, they don't seal in the filter box properly. The cheapest route is to make your own filter setup. A piece of 4" pipe and a NAPA #6637 filter, much cleaner air than any of the washable filters and only about $40 for the whole project (search Tymar intake on google for more on this). A better exhaust will help to, summit racing has a decent 4" system thats pretty cheap. As far as a chip goes www.dp-tuner.com is the place to look. Banks makes good stuff but its to much $$. Your mileage should get better in the spring when they get rid of the winter blend fuel, it kills my mileage to.
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Old 01-04-2009, 08:57:48 PM
Dirk Jr Dirk Jr is offline
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Default Re: Ford Powerstroke MPG

Quote:
Originally Posted by Nick View Post
K&N might be ok on a gasser but I wouldn't put one on a diesel. Better off with something that will actually flow some filtered air like AFe or Tymar.
What he said. I use the DIY Tymar. Excellent upgrade from the junk factory air box.
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Old 01-04-2009, 09:07:07 PM
Dirk Jr Dirk Jr is offline
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Default Re: Ford Powerstroke MPG

Quote:
Originally Posted by casesteam12 View Post
All filters have been changed recently.
I havent had a chance to take it on a trip to see what it will get.
4:10 gear ratio
I also should have mentioned it is 4x4
The 4:10 gears are MPG killers. They pull well, but suck for fuel economy. Another thing is winter fuel, another killer for fuel economy. Now is the 350 a dually? Add another fuel economy killer. If you hit the diesel truck sites you can find some ways to improve the milage.
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Old 01-14-2009, 02:08:11 PM
lucasd lucasd is offline
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Default Re: Ford Powerstroke MPG

You might visit thedieselgarage.com or thedieselstop.com. They both have a lot of good info and suggestions for MPG and more power.
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Old 01-15-2009, 12:04:55 AM
bill chasser bill chasser is offline
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Default Re: Ford Powerstroke MPG

My 2002 PSD7.3 dually crewcab 4x4 with 4:10s and lockers and stock heighth tires gets 28 mpg on highway 17.5 mpg in town empty. Loaded on highway pulling 17k I get 17-20 mpg @ 70mph depending on terrain. Mods are 4" turbo back with muffler, stock/100hp Superchips flip chip (no longer available), US Gear electronic cooling fan controller (like a Hortan fan clutch on a big rig, also no longer available). Stock intake system and injectors. Do not advise the K&N filters or their freshair intake system. Everything I have read independently shows that there is actually a net decrease in output. I'm not sold on any of the freshair systems unless the truck is heavily modified. I use fram filters in my airbox and changed them every 5k when I do my service. It seems to trap alot of junk and just prefer to always change it out. Cold weather fuels will definately cut your milage as well. Keep you tires inflated properly as I have found this to net me as much as .5 mph. Soft touch on the throttle can also improve your mileage as well as judging your braking needs in advance of traffic flow.

you don't say how many miles are on your rig or whether it has ever had pump or injector service. This may also be a cause of poor performance...

Bill
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