...to gofalls; how the heck are you getting such a low rpm reading at 65mph's?
I don't get it...

 

Yeah, 3200 RPM maybe, not 2200. That's about what I get on stock size tires at 65 mph.

 

At 65 mph I'm at 2700 RPM, A/T, 4.88, 31's......

 

I checked and double checked. It goes 65mph at around 2250 - 2400. Hangs out just above the 2250 rpm mark.

 

I didn't realize there was such a difference between your auto 3.0 and my 5-speed 3.0.

 

you think it is your gearing that is keeping those rpms so low, or just the big tires, or some combo thereof?

 

or is there that big a diff between the 6 cyls, and the 22re? mine is a
22re, and i am on stock tires, and i am at exactly 3000 rpms, at 70 mph.

 

I just ran my first tank of gas through my 1990 4Runner.

10mpg

I've done a full tune up so I can't wait to see if I get any improvement.

 

OUCH!!!!
That's gotta hurt... hope it gets better, or you got a serious leak somewhere.

 

There is definitely room for improvement there. At least 50%!

 

I just did some cheap upgrades that consisted of a electric fan off a 03 Nissian Quest van from pull-a-part for 17 bucks and a 2 speed fan controller and relay with an in line fuse for 25. I also got a set of hubs for 70 bucks. I just did a mostly highway check on a 3.0 with a fresh tune up, automatic trans, and 31/10.5 tires and averaged 18mpg. I thought that was real good compared to last I checked. Could be the cold weather who knows but I'm happy. ~Derek

 

WHAT? 10mpg is bad? bout what i get right now. guess 4wd doesnt help

 

1989 SR5 V6 ExtraCab
221,325 miles
215-75-R15 tires
15"x7" wheels, std lift

City=17mpg
Hwy=24mpg

This truck was in SAD SHAPE when I first got it in 2008. After plowing nearly what I paid into it(@$3k) I still love this old truck and intends to drive it into the ground. On the selected tankfuls I add Berryman's B12 Chemtool...the mileage registers 28mpg! More pix in the Members' Gallery...here is a teaser:

 

Zach; yours is a auto 2 wd , right? I bet it would be wicked higher, if you dropped the tailgate on highway driving!!! mine is a 4 rnr 4x4, and I am getting the 18 and 22 ish, depending on driving. It could be better, with radials instead of all terrains, and I have about a 3 inch lift on it, and I carry about 100 lbs of bugout gear at all times, but it is still plenty good for me...

 

Correct, its a 2WD auto. It used to get 11-13mpg when I first got her...

 

for some reason, not quite sure why, the tacos and 4rnrs that were 2wd autos, allways could seem to break that 22-23 mph barrier on the highway, even if they were a bit lifted and had bigger tires. reguardless if the were 4 or 6 cyls.

 

Dropping the tailgate eliminates the air-cyclone in the bed of your truck, and creates more drag...
Ever have leaves in the back of your truck when you go down the highway?
They don't fly out often, and most come in the cab with the rear window open.

 

... Oh come on!!!
So let me see; a solid vertical wall, that directly is smashed into by rearward moving wind, and acting almost like an airbrake, to wind that comes down into the bed, the mileage gets worse, if this airbrake is removed...

Please show me some tests done on this, otherwise, I will go to my grave, refusing to believe this one.
That air vortex effect is created by the wind, smashing into the top of the tailgate, bouncing downward at an angle into and toward the center of the bed, and curling upwards against the rear of the cab. Think on the ' smashing' part..

 

http://www.youtube.com/watch?v=r3aqHbD-O9E
there ya go RR, mythbusters for you.

im getting around 10mpg.
factors-
-22re w/ 5sp manual tranny
-45mph speed on decent hills to work 2 mi away
-hubs locked in but in 2wd while driving on the road
-4x4 a lot for getting several people per day unstuck and getting up my driveway
-31x9.5 mud terrains
-winter mix gas
-recent addition of my 150lb bumper

i saw about 15 mpg on the tank that i didnt have my hubs locked in for between snows when my driveway was still 2wdable.

 

91 4runner, 3.0, auto, 4x4, 33x12.50 tires.

city: sucks
highway: still sucks.

On average 14-15mpg.

Next upgrade will probably be a chevy 350. About the same mileage, twice the power