Home Ford Ranger Forum Tech Articles Other Articles Featured Rangers Readers Rangers Classifieds Shirts & Decals Parts Store

Ford Ranger Discussion Forum  

Go Back   The Ranger Station Forums > Help Forums - Engine & Transmission Forums > V6 Forums > 3.0 Liter Forum

Reply
 
Thread Tools Display Modes
Old 12-08-2008, 08:09 PM   #1
MUDDING B-3000
Member

 
MUDDING B-3000's Avatar
 
Join Date: Feb 2008
Location: Barrie, Ontario, Canada
Posts: 694
Vehicle Year: 1997 , 1992
Vehicle Make: Ford , Ford
Vehicle Model: F-350 , Ranger
I use this vehicle for: daily driver and weekend warrior!
Rep Power: 21
MUDDING B-3000 is on a distinguished road
Default bad gas mileage!

ok well ive been reading all the other post an i cant pin point my problem with bad mileage well in the summer i would barely get 300km to a full tank an now its winter so i got the hubs locked an driving 4x4 sometime an i filled my truck up on saturday an driven 75 km an i almost went throught half a tank of gas. i usually am driving back country roads an not a lot of stop on go, ive changed my air filter, fuel filter, an plugs last week an im stilling getting bad mileage??

any ideas?
__________________
1997 Ford F 350 xlt 7.3L Powerstroke
1992 Ford Ranger 4x4 Full Width D44 an 9", 5.5 EB coils, custom extended RA's, custom leaf spring pack soon will be swaping in 5L .
MUDDING B-3000 is offline   Reply With Quote
Forum Notices (Not shown to 'Premium Members')

 SPRING ONLINE MAGAZINE!

 Check out the latest articles

 Want to become a Premium Member & not see these notices? Click HERE.

Old 12-09-2008, 01:17 PM   #2
Earl43P
Premium Member

 
Join Date: Aug 2007
Location: E-City, NC
Posts: 3,161
Vehicle Year: 2000
Vehicle Make: Ford
Vehicle Model: Ranger
I use this vehicle for: a driveway ornament, light hauling
Rep Power: 31
Earl43P is just really niceEarl43P is just really niceEarl43P is just really niceEarl43P is just really niceEarl43P is just really nice
Default

O2 sensors go bad over time and affect fuel mileage.

IAT could be bad, telling the PCM incorrect intake air temperature.

ECT could be bad, telling the PCM the coolant isn't getting to operating temperature (even if it really is).

TPS could be bad, giving an incorrect throttle position to the PCM.

FPR could be bad, putting out max fuel pressure at all times.

Thermostat could be bad, does your temp gage work?

Low tire pressure?

Brake(s) dragging?

Vaccum leak?

Poor compression (bad rings, valves)?

Plugged exhaust?

If you've never replaced the O2 sensors, I'd start by looking at them first. Maybe pull them, inspect them and clean the carbon off with a blowtorch and reinstall (or replace them). They go bad over time and don't always light the CEL if they're putting out a "reasonable to the PCM" signal.

Did you put a different speedo gear on the transmission speed sensor when you installed the 31" tires? If not, you are really travelling further than your ODO says you are....

Start ruling things out....
Earl43P is offline   Reply With Quote
Old 12-09-2008, 02:07 PM   #3
MUDDING B-3000
Member

 
MUDDING B-3000's Avatar
 
Join Date: Feb 2008
Location: Barrie, Ontario, Canada
Posts: 694
Vehicle Year: 1997 , 1992
Vehicle Make: Ford , Ford
Vehicle Model: F-350 , Ranger
I use this vehicle for: daily driver and weekend warrior!
Rep Power: 21
MUDDING B-3000 is on a distinguished road
Default

ok finally someone answer thanks alot for telling me all of those thing ill start to rule things out, i dont think the guy i bought the truck off of changed the speed sensor so i kno i am really goin faster then my speedometer, but could that change my odometer that much? like if i only am getting 300 to a tank i might be really getting like 400?
__________________
1997 Ford F 350 xlt 7.3L Powerstroke
1992 Ford Ranger 4x4 Full Width D44 an 9", 5.5 EB coils, custom extended RA's, custom leaf spring pack soon will be swaping in 5L .
MUDDING B-3000 is offline   Reply With Quote
Old 12-09-2008, 02:44 PM   #4
Wicked_Sludge
Member
 
Wicked_Sludge's Avatar
 
Join Date: Aug 2007
Location: Westport, WA
Posts: 6,937
Vehicle Year: 1993
Vehicle Make: Ford
Vehicle Model: Ranger, Flareside
I use this vehicle for: Attracting the ladies
Rep Power: 36
Wicked_Sludge is a jewel in the roughWicked_Sludge is a jewel in the roughWicked_Sludge is a jewel in the rough
Send a message via MSN to Wicked_Sludge
Default

you need to correct your mileage for the incorrect speedometer.

you also need to figure out your actual MPG, not miles-per-tank.
__________________
As seen on the internets!

Quote:
Originally Posted by Hahnsb2 View Post
Dyno sheet or GTFO
Quote:
Originally Posted by Ranger Dave (B25) View Post
The call was for scantily-clad women. A Certificate of Boob Authenticity was NOT specified.
Quote:
Originally Posted by Grant Imahara
I'm not sure if we have the right stuff; I'm just hoping we don't have the wrong stuff.
__________________________________________________ ____________________________________
Last edited by Wicked_Sludge : Today at 09:16 PM.
Wicked_Sludge is offline   Reply With Quote
Old 12-13-2013, 09:19 PM   #5
BadRancher
Junior Member
 
Join Date: Jun 2013
Posts: 42
Vehicle Year: 1999
Vehicle Make: FORD
Vehicle Model: RANGER 3.0 4x4
Rep Power: 9
BadRancher is on a distinguished road
Default

I'm having the same issue. I'm gettin around 11 mpg on my 4x4 with mostly city driving.
BadRancher is offline   Reply With Quote
Reply

Bookmarks

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

Forum Jump




All times are GMT -5. The time now is 03:51 PM.




1999-2014 / 959 Media LLC / All Rights Reserved