6.5-7 MPG issue
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6.5-7 MPG issue
Hey guys so I think I have an issue but I might know the answer to a certain degree. My issue is 6.5-7 MPG on average commuting while driving like a normal person. So I have 91 f150 351w e4od 4x4. 35s and a 4 inch lift which is part of my issue and here’s the kicker 3.55 rear end gears. Could it just be the tire to gear ratio that’s messing me up so badly or could there be something else?
Cargo Master
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KOEO = Key On Engine Off
ECT = Engine Coolant Temperature sender
If you've got a basic OBD2 scan tool, it won't work with this truck, you'll need something like an Innova 3145, or read the blink codes. (Personally, I'd rather sandpaper the arsehole of an alligator in a phone booth, than read blink codes, but you do you.)
ECT = Engine Coolant Temperature sender
If you've got a basic OBD2 scan tool, it won't work with this truck, you'll need something like an Innova 3145, or read the blink codes. (Personally, I'd rather sandpaper the arsehole of an alligator in a phone booth, than read blink codes, but you do you.)
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Ok well I have a OBD1 blink code tool so it’s what I’ve got. I’ll scan it tomorrow and see what I get last time I scanned it it was freaking out about not having cats and a couple vacuum issue which I have fixed
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Lead Driver
Joined: Jan 2019
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From: N.W. Alabama
Our PCM's dont know that our trucks have cats, there's nothing to tell PCM the cats are there, like newer trucks, that have O2 sensor after the last cat to show a difference. O2 sensor is how old?
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That is no good either because these fuel gauges are notoriously inaaccurate. You need an accurate measure of the distance travelled and the fuel consumed, a gps is better than your ODO at this point so that part is fine but start with a full tank and use the amount of fuel needed to refill the tank to the same point(when the filler shuts off) as the fuel measure for the calculation. You don't have to completely drain the tank you could only run it down to an indicated 1/4 or 1/2 tank for example. the more you repeat that the more accurate the average of them all will be and this will also give you an better idea of just how far off the fuel gauge is.
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