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jayson_waltz · 11-22-2009, 09:29 PM

Well I know there are other threads about this, but i've searched for about 45 mins now and can't find the answer I want.

I filled earlier tonight at home before i drove back here to college. Its about a 2 hour drive, there is one town to slow down through and 1 on ramp to get on the interstate, other than that i was on cruise control the whole way, no other turns and ND is flat land. 65 mph exactly on highway, 75 exactly on interstate, which are the speed limits. I filled right away after i got off the interstate here. 23 mpg, wtf? I have the 2.4, it should be better than this on highway.

So question i couldn't find, which O2 sensor has most to do with gas mileage? I have 109,xxx miles and they have never been touched, so i'm going to try them. I have a new air filter, new fuel filter, and new plugs 10k ago (ACD plugs). 34 psi in my summer tires. Any opinions on anything else that could help? I'm going to clean my MAF tommorow, and try zmax for the hell of it.

11-22-2009, 09:29 PM	#1
jayson_waltz GLS member Join Date: Aug 2006 Location: Grand Forks, ND for school; Langdon, ND home Posts: 2,632	MPG, yea I know, another one. Well I know there are other threads about this, but i've searched for about 45 mins now and can't find the answer I want. I filled earlier tonight at home before i drove back here to college. Its about a 2 hour drive, there is one town to slow down through and 1 on ramp to get on the interstate, other than that i was on cruise control the whole way, no other turns and ND is flat land. 65 mph exactly on highway, 75 exactly on interstate, which are the speed limits. I filled right away after i got off the interstate here. 23 mpg, wtf? I have the 2.4, it should be better than this on highway. So question i couldn't find, which O2 sensor has most to do with gas mileage? I have 109,xxx miles and they have never been touched, so i'm going to try them. I have a new air filter, new fuel filter, and new plugs 10k ago (ACD plugs). 34 psi in my summer tires. Any opinions on anything else that could help? I'm going to clean my MAF tommorow, and try zmax for the hell of it. __________________ 2001½ F150 XLT Crew Cab- true dual glasspacks with x-pipe, AEM intake, SCT X3 with VMP custom tunes, full stereo system, HID 55w heads and 35w fogs, 35% tint front and 20% rear, Lightning tail lights 04 F6 Sno Pro Team edition- MBRP race can, ODS clutch kit 01 YZ125- bored out to 144, PnP cylinder and head, Pro Circuit WORKS suspension, many other mods Last edited by jayson_waltz : 11-22-2009 at 11:16 PM.