Kiroshu

17 MPG for a 4x4 22re set-up is pretty acceptable.

The 22r engine has to work very hard to move these trucks.

Your not going to receive anything more than around 20MPG with these trucks. They are just not designed for it.

As long as your keeping up with the trucks maintenance tables/services then there's not a whole lot else you can do for increase MPG as the truck sits.

Reading through the thread you seem to be on top of most of the trucks maintenance.

-Excessive weight on-board...?
-Reduce Weight...?
-Excessive drag on the engine... VIA engine accessories.
-Brake system drag..?
-Increase tire PSI..?

Got to think about driving habits.

-Manual Transmission truck..?
-What are your shift points..?
-Getting into high gear as quickly as possible...?

-Automatic Transaxle..?
-Poor shift points..?
-Tired Transaxle internal components...?

Engine have high mileage...?

Poor engine health = loss of power = poor economy.

If your looking to re-gain MPG's... refurbishing the engine may be a future option.

My 1986 4runner is the only truck I have that I ever monitored the MPG's on and its right at about 16-17 MPG's.

-It however has 270,000 Miles on it with the original engine that runs great still, but I know the engine is very tired.
-And I am extremely adamant about its maintenance and its all 100%.
-I also never ever shift over 3k RPM's with its manual transaxle.
-Running 235/75/15 tires.

dzimprich91

I understand what your getting at, but it seems wierd to me that the 22re is getting on only 17 mpg when soooo many guys are getting 20 or better. I bought this pickup for the reason of it being known for getting good gas mileage and being very reliable. If I wouldve know to expect mileage in the teens I wouldve bought a normal sized pickup and wouldve gotten the same mileage or even a little better. I just feel like I should be getting better mileage then this, but if what your saying is true I will be selling this truck shortly.

Gamefreakgc

Kiroshu's spot on in his post. 4x4's get worse gas mileage across the board compared to 4x2's. I don't think you're going to find an early 90's truck that will get much better, EFI technology just wasn't all that good back then compared to now.

If you want to give it one last shot and you've got about $300, try a new cat-back exhaust system with a Magnaflow or Flowmaster muffler. It raised my MPG's from 14 to 16.5 respectively and gave an HP boost. I've heard it does great things to the 22RE's as well.

Blueman

Was there any resolution to this?

I consistently get 16-17MPH in my 1987 4Runner (22RE) with a few tanks in the 18's if the winds are right. 186k miles and Cooper Destination At3 30x9.50R15 tires. No external mods to affect the wind resistance other than about 1-1/2" lift in the rear to bring it just a hair above level.

New plugs, wires, cap, rotor, O2 sensor, throttle body cleaning, air filter, PCV valve, 89 octane fuel...all have made no mileage improvements. I always wonder about the cat converter, but here in California it's no bargain to swap out just for an experiment.

93 Toyota 4x4

1993 22RE, 4x4 Extra cab, 5spd, stock tires, 124,000 miles- 87 octane, 10% ethanol, 20 mpg at a constant 60-65 mph highway....go much over 65 and mpg will drop.

City mpg, maybe 17-18, it's been a long time since it's been checked.