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Trucks, Trailers and Hauling for Shows

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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Mikey4026 Mikey4026 is offline
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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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casesteam12 casesteam12 is offline
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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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oldironcollector oldironcollector is offline
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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 01-04-2009, 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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Old 04-17-2009, 10:37:53 PM
Bruce Werner Bruce Werner is offline
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Default Re: Ford Powerstroke MPG

I have a stock 7.3 in 94 F-350 4Wheel Drive with 5 speed manual. I routinely get 17, and usually 18 or 18.5 if I do mostly freeway driving. It has 247,000 on it, original pump and injectors.
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Old 04-15-2009, 11:03:56 AM
Mike Miller Mike Miller is offline
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Default Re: Ford Powerstroke MPG

How does your exhaust look? If you have more than a puff of black smoke when you accelerate you need to check the turbo.
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