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Old 05-13-2012, 10:26 PM   #11
Shran
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One tank down, 18.8mpg combined. That is 75% highway.
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Old 05-14-2012, 10:56 AM   #12
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Quote:
Originally Posted by Shran View Post
One tank down, 18.8mpg combined. That is 75% highway.
You've just re-convinced me I never want to own another 4cyl Ranger.

Why you ask? well I average a combined mileage of 17.5mpg
and 19mpg highway and the best I've ever gotten is 22.1mpg, but I've played in the 20's on the highway...

in a 4x4 Supercab with a 4.0 running 4.10 gears.

So at what point would running a 4cyl gain me anything?

AD
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Old 05-14-2012, 01:02 PM   #13
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Originally Posted by Shran View Post
One tank down, 18.8mpg combined. That is 75% highway.
Something is wrong with your driving or your truck.

I routinely get high-very high 20's (on a few occasions I did break the 30 mark, but not often).

That kind of mileage is uncalled for.

I still managed to get 14 towing another (4.0, 4x4) Ranger on a dolly across the state of Mi.
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Old 05-14-2012, 04:26 PM   #14
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Quote:
Originally Posted by AllanD View Post
You've just re-convinced me I never want to own another 4cyl Ranger.
I have been in a state of disappointment and shock for the last two years. I got 25mpg out of my '86 with a 2.9, 5 speed and 3.45 gears. It is just so reliable though . . . . . .

Quote:
Originally Posted by Captain Ledd View Post
Something is wrong with your driving or your truck.
I agree, but I do not know what could be wrong. I have had a recurring cylinder 1 misfire occasionally, but it runs really good otherwise. I am leaning towards a partially dead or dying coil pack, bad oxygen sensor(s) or dirty MAF sensor. I have replaced the spark plugs. FWIW I am running 87 octane regular gas with no ethanol every time and I have been getting gas from the same station every time for over a year.

18.8 is slightly lower than usual, but there were a couple really windy days last week and that seems to affect my mileage a lot.
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Old 05-14-2012, 10:20 PM   #15
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I cleaned the MAF tonight, just as a precaution. It appeared to be very clean but I guess we will find out. I am guessing that it will have zero effect on mileage. No results yet on the other truck we're trying this on.
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Old 05-14-2012, 11:39 PM   #16
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Quote:
Originally Posted by snoranger View Post
Here the problem with your theory.

That is a 2 channel coil (wasted spark system). It fires #1 + #4 and #2 + #3 at the same time as pairs. That means when the #1 cyl is being fired on its exhaust stroke, #4 is being fired on its compression stroke. (ignoring the other coil, for now.) Switching 1 + 4 does nothing, except move which terminal, on the same channel of the coil, the wire attaches to.

With this 2 coil system, wasted spark system, you always have both plugs firing on both the comp and exh stroke. One is being fired on the main coil (on purpose), the other is being fired on the secondary coil (as wasted spark).
I was thinking the exact same thing.
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Old 05-15-2012, 12:48 AM   #17
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ignore this. waste of your time.

All this will accomplish is to change a good working waste spark system into.... a good working waste spark system.
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Old 05-15-2012, 01:33 AM   #18
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Old 05-15-2012, 02:01 PM   #19
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Quote:
Originally Posted by AllanD View Post
You've just re-convinced me I never want to own another 4cyl Ranger.

Why you ask? well I average a combined mileage of 17.5mpg
and 19mpg highway and the best I've ever gotten is 22.1mpg, but I've played in the 20's on the highway...

in a 4x4 Supercab with a 4.0 running 4.10 gears.

So at what point would running a 4cyl gain me anything?

AD
I don't recall ever getting below 22mpg in my '94 Ranger. Not sure on combined average, but a typical tank is in the 24mpg range. Best is 27 on the highway.
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Old 05-15-2012, 10:21 PM   #20
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Second tank down today (I drive a lot) which resulted in 20.1mpg combined, 90% highway. The other truck we tried this on got 21.7mpg (average for that truck.)
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