Increasing Expy Fuel Mileage?
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New User
Joined: May 2003
Posts: 1
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From: Boulder, Colorado
Increasing Expy Fuel Mileage?
I know the Expedition is a very heavy vehicle and the idea of increasing the fuel mileage might sound like a wasted effort. However, since my wife and I enjoy pulling our trailer to the mountains for camping, has anyone has any success with an intake or throttle body? Any other ideas? Any help would be greatly appreciated. Thank you!
D&T
D&T
Logistics Pro
Joined: Oct 2000
Posts: 3,960
Likes: 5
From: All over Texas
Increasing Expy Fuel Mileage?
Hi and welcome.
There have been many discussions on this topic. A quick search of past threads might give you a lot more insight than I can.
As you can imagine many variables affect mileage, i.e. air pressure in tires, driving habits, engine tune, some even say oil weight dramatically affects mileage, etc. I've also heard that changing old (~80K+miles) upstream O2 sensors will help.
The solution I like best was proposed by a politician in North or South Dakota several years ago while running for office. He said he would see to it that all new roads were built "downhill" so as to improve all the residents' fuel economy.
There have been many discussions on this topic. A quick search of past threads might give you a lot more insight than I can.
As you can imagine many variables affect mileage, i.e. air pressure in tires, driving habits, engine tune, some even say oil weight dramatically affects mileage, etc. I've also heard that changing old (~80K+miles) upstream O2 sensors will help.
The solution I like best was proposed by a politician in North or South Dakota several years ago while running for office. He said he would see to it that all new roads were built "downhill" so as to improve all the residents' fuel economy.
Elder User
Joined: Nov 2002
Posts: 736
Likes: 1
From: Texas, USA
Increasing Expy Fuel Mileage?
In the last fifty years I've done my share of buying to keep the gadget boys in business for years to come, but I can tell you that the biggest gains in mileage for my vehicles, including my present '97 Expedition, 4x4, towing a 5000lb trailer in the mountains of CO, Ut, CA, etc. didn't cost me a cent. It won't cost you either. That's right. The biggest gains in mileage were free. Raise the tire pressure in your tires to five pounds higher than the recommended psi, and drive no faster than 60 mph. It rides a little rougher, but it reduces sway in the wind, too. It works to lower gas consumption, tire wear, driver fatigue, engine wear, etc. etc. and your trailer is easier to handle in all situations. Kill that urge to keep up with speed freaks with deep pockets, and you will enjoy the trip a lot more. Amazing how less tired you will feel, and how much more scenery you will see. Try it.
Hope this helps.
Hope this helps.
Logistics Pro
Joined: Oct 2000
Posts: 3,960
Likes: 5
From: All over Texas
Increasing Expy Fuel Mileage?
and drive no faster than 60 mph. Amazing how less tired you will feel, and how much more scenery you will see. Try it.
Hope this helps. [/B]
Hope this helps. [/B]
Elder User
Joined: Nov 2002
Posts: 736
Likes: 1
From: Texas, USA
Increasing Expy Fuel Mileage?
Buzzard,
HaHa! I AM a grandpa. I used to think all the slow drivers of RVs were tieing up traffic and being slowwitted and senile. And there are some who do hog the road on narrow mountain passes and such, but most of us who have found out about how much better is to drive slower will pull off if there is a place to do so, so people in a hurry can go on. Retired now, I don't have to be anywhere at any time, that's why I trailer and boondock with a 4x4. I just stop where it's pretty and quiet, and legal, of course.
A pox on all drivers who do not pull off and let others pass, including me and my trailer, when they see two or three cars behind them!
Incident'y, I don't always drive slow, just when pulling a trailer to relax. I drive both my vehicles in competition on and offroad, and practice anywere I get a chance!
HaHa! I AM a grandpa. I used to think all the slow drivers of RVs were tieing up traffic and being slowwitted and senile. And there are some who do hog the road on narrow mountain passes and such, but most of us who have found out about how much better is to drive slower will pull off if there is a place to do so, so people in a hurry can go on. Retired now, I don't have to be anywhere at any time, that's why I trailer and boondock with a 4x4. I just stop where it's pretty and quiet, and legal, of course.
A pox on all drivers who do not pull off and let others pass, including me and my trailer, when they see two or three cars behind them!
Incident'y, I don't always drive slow, just when pulling a trailer to relax. I drive both my vehicles in competition on and offroad, and practice anywere I get a chance!
New User
Joined: May 2003
Posts: 23
Likes: 1
From: TX
Increasing Expy Fuel Mileage?
I have to agree with raising the tire pressure for sure. I have an 01 EB 2wd with the 5.4 & 4R100. I run 34psi up front and 36 in the back. Truck is completely stock. I get 14city/16-18 Highway. Steering is much lighter too.
I can't believe the tire pressure Ford recommends which is posted on the driver door jam. It's something like 26 front 28 rear. Thats freaking nut's! With tire pressures like that no wonder there is so much publicity about tire blowouts. If you want car like ride, buy a car !!!!
I can't believe the tire pressure Ford recommends which is posted on the driver door jam. It's something like 26 front 28 rear. Thats freaking nut's! With tire pressures like that no wonder there is so much publicity about tire blowouts. If you want car like ride, buy a car !!!!
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Posting Guru
Joined: Nov 2002
Posts: 1,222
Likes: 4
From: Texas
Increasing Expy Fuel Mileage?
I had a '99 5.4EB 4x4 with the 3.73 gears. Installed a K& N filter with a larger MAS--loved the throttle reponse. Used it for about 18,000 miles--mileage around 13-14 on hiway. Pulled it off before selling it, drove about 2000 miles and the mileage jumped to 15-16 with no other changes. Someone told me once that a larger MAS makes no sense without larger injectors?
With that single experience, I wouldn't recommend a larger MAS.
With that single experience, I wouldn't recommend a larger MAS.
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