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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 10-21-2008
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Mileage Crapper

Well over the summer I averaged 14.5 mpg. Within the past moth my milage has dropped to 13.5 mpg, I had 230 miles on E. I then switched to moble 1 synthetic and a new fuel filter hoping to maybe obtain 15 mpg but by the looks of it I won't even see 230 miles but more like 215 miles on E but this is taking it super easy on the gas, I never exceed 2000rpm and try to cruise at 45 [email protected] on the local streets. Now I am not expecting super milage because I drive 90-95% city but there is no way I could see 14.5 mpg right now. I will see my real milage when I get gas tomorrow but I have chaged the 02 sensors and spark plugs, what else shouls I look for?
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Old 10-22-2008
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Mine dropped also i think they switched over to the winter gas
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Old 10-22-2008
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I'm starting to think your odometer is off or incorrect. I've never seen anyone butcher the mileage on an OHV that bad before.
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Old 10-22-2008
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Mine dropped also i think they switched over to the winter gas
Might be but it has been like this since early october.
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Old 10-22-2008
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I'm starting to think your odometer is off or incorrect. I've never seen anyone butcher the mileage on an OHV that bad before.
I thought that to but I followed my dad home from the gas station and we both had 19.6 miles on the odometer. It is a an automatic 4x4 and like I said I drive 90% city, so I don't expect too much. I do think I deserved at least 15mpg this last time though.
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Old 10-22-2008
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Oh I did get gas today and I averaged 13.12 mpg. I sprayed my MAF with some cleaner but it looked clean in the first place.
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Old 10-22-2008
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Wow. I average 17-18mpg in the city. That's with 4.0L and 4.10s
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Old 10-24-2008
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Dragging brakes
Tire pressure
Winter fuel


Rich
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Old 10-24-2008
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Originally Posted by wydopnthrtl View Post
Dragging brakes
Tire pressure
Winter fuel


Rich

x2 + sparkplugs , air filter
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Old 10-24-2008
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I know its not tire pressure, sparkplugs or airfilter. My engine is running at normal temp, vacuum seems fine, I will check the brakes again though. Could it be plug wires or the coil pack?
But between the winter fuel and the remote starter I averaged 12.5 mpg last year so I am really not going to try this winter.
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Old 10-25-2008
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Originally Posted by leadfoot View Post
Could it be plug wires or the coil pack?
Not if its running good. A weak spark is still a spark. You'd notice a loss in power or a misfire if it were one of those.

How cold are the temps when your driving? I notice a decent drop once they get below 50F here. I also notice when they switch to winter gas.

According to my scanguage this tank I'm only at 18.2 (norm = 20-21) It's been much colder and they have switched to winter gas round here.

Rich
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