comparing 4.6 to 5.4 litres - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Expedition Forum | Lincoln Navigator Forum
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

Ford Expedition Forum | Lincoln Navigator Forum Forum for discussion of the Ford Expedition and Lincoln Navigator.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-21-2006, 11:54   #1 (permalink)
Registered User
 
Join Date: May 2006
Posts: 2
comparing 4.6 to 5.4 litres

We are looking for a 2001-2003 Expedition. We used to have a 1998 Expedition Eddie Bauer with the 5.4 litre motor, and like the drive, ride, and room for 7, if needed. High mileage made us sell it two years ago, and purchase a F150 supercrew. It's a really nice truck, but my wife really misses the extra passenger space, so we are shopping once again. If I remember, our old '98 would only get us an average of 14 mpg. I was wondering how much increase we could expect in fuel economy if we went with a 4.6 as opposed the the 5.4? Only thing we ever pull with it is a small popup camper occasionally. Thanks for any input.
coadman
coadman is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-22-2006, 22:34   #2 (permalink)
Registered User
 
Join Date: Jan 2006
Location: Tioga, LA, USA
Posts: 148
Re: comparing 4.6 to 5.4 litres

My wife had a 2003 with the 4.6, and she probably got about 14 mpg. She now has a 2005 with the 5.4, and we recently got 17 mpg on a trip. The 5.4 has a lot more accelleration than the 4.6, and has apparently been re-worked by Ford to be more fuel-efficient. Another thing different between these vehicles is that the 4.6 had 355 rear-end, and the 5.4 has 373 rear-end. The 373 should make the thing less fuel efficient according to the books, but it definately explains the increased pickup (in combination with the larger motor). So, in a nutshell, the motors are a bit more fuel efficient than before, but since when did Ford ever sell a vehicle because of fuel economy? They're valved differently, and thus have more low-end torque, but this comes at a cost of less MPG. Life is short: get what you want!
redneckf150 is offline   Reply With Quote
Old 07-18-2006, 18:39   #3 (permalink)
Registered User
 
Join Date: Oct 2004
Age: 53
Posts: 6
Re: comparing 4.6 to 5.4 litres

I think the 4.6L is a bit too small for the Expy.

I'd definitely get the later 3 valve 5.4L motor. I have the older (2004) 2 valve 5.4L and it's a pretty good engine, especially for towing. We get around 16-17mpg fwy running light and 13-14mpg towing & loaded. That's on crappy CA gas. I've seen as high as 19mpg fwy on New Mexico gas.

The later 3 valve 5.4L has variable valve timing which improves HP, torque, and mileage, it's a win win situation. I believe it's rated 2mpg better than the old one so you'd be looking at 15 - 19mpg realistically. Not bad.
danketchpel is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Expedition Forum | Lincoln Navigator Forum



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 07:27.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.