Dropping fuel mileage.
Thread Starter
|
Mountain Pass
Joined: Oct 2005
Posts: 140
Likes: 2
Dropping fuel mileage.
Was wondering if anyone has had this issue. My '05' with 56k miles all the sudden has started dropping mileage badly. About two months ago, we were running around 16 to 16.5 consistently. Since then it has just started dropping, seems to be gradual. Over this time it has dropped to 13.5 to 14. Had the Ford shop check computer. Air cleaner is good. THey say no codes or issues. I am wondering if I should try changing the Oxygen sensor.
Any experience here would be great.
Any experience here would be great.
Thread Starter
|
Mountain Pass
Joined: Oct 2005
Posts: 140
Likes: 2
I know the temp and fuel blends can have and affect, but this is the first year I have had this problem. Tonight I noticed the mileage indicator said 13.9. I don't think I have ever seen it that low. I can't figure out why such a drop. I fill up at a variety of locations, so I don't think the fuel supply is the problem.
One time i had an 87 F150 that dropped off. I finally pulled the muffler and ran a steel rod through the CAT. that was good for about 1.5 mpg, plus more power. But I really don't want to do that with my exp.
One time i had an 87 F150 that dropped off. I finally pulled the muffler and ran a steel rod through the CAT. that was good for about 1.5 mpg, plus more power. But I really don't want to do that with my exp.
New User
Joined: Dec 2014
Posts: 5
Likes: 0
Hi
I'm not an expert by any means and I just bought an 03 Expedition. Some times we over look the simplest things, tire pressure and or air filter. I have the 5.4L
A couple of weeks after I picked up my truck I put new tires on it and pumped up the pressure a bit to about 40PSI. I noticed a slight increase in MPG. then I put in a Spectre airfilter and drove it for a week. I noticed another slight increase in MPG. I'd saw over all I gained about 1.5 to 2 MPG than when I drove it off the lot.
I'm not an expert by any means and I just bought an 03 Expedition. Some times we over look the simplest things, tire pressure and or air filter. I have the 5.4L
A couple of weeks after I picked up my truck I put new tires on it and pumped up the pressure a bit to about 40PSI. I noticed a slight increase in MPG. then I put in a Spectre airfilter and drove it for a week. I noticed another slight increase in MPG. I'd saw over all I gained about 1.5 to 2 MPG than when I drove it off the lot.
Fleet Owner
Joined: Apr 2008
Posts: 24,318
Likes: 5,128
From: 0,0,1
I drop a few MPG in the colder months due to allowing warm up times. If you're letting it warm up 10-15 minutes each morning then that will account for a good chunk of the MPG drop. Just a thought.
Laughing Gas
Joined: Jan 2003
Posts: 1,082
Likes: 40
From: Melbourne, FL
That can be attributed to you having a lighter foot/less aggressive driving style than the previous owner. Those are the best changes to make for anyone who REALLY wants to improve gas mileage.
Thread
Thread Starter
Forum
Replies
Last Post
dcw0003
6.7L Power Stroke Diesel
5
Feb 11, 2015 10:20 AM
