oh by the way my engine is a V6 3.0L

 

Whats rim size got to do with anything? Tire size is worth knowing.

I drive a 1940 model A and my shoe size is 10 1/2.

 

87 4runner
22RE 5speed 4x4
Bone stock
p245/85/r15 (I think) so 29-30's
Overall average is 20. Can squeeze it up to 24mpg if I drive like a dead guy.
^^^^^That's country mileage. I live in middle Georgia, so... And this area is hilly (Not like a mountain, I understand), but I learned that with a 22RE, patience while climbing hills is a virtue.
BTW, tires are Yokohama Geolander HT/S.
I know, I know, "HIGHWAY tires? On THIS forum?"

 

Picked up a 1990 4runner a week ago. 3.0, 5spd, 4x4 and everything bone stock I believe.
17 MPG city (15 minute commute to work average, 35-45 MPH mostly, occasional stop and go for maybe a mile)

21 MPG highway at about 75-80 most of the time.

 

have had mine for about a year and im lucky to see 14-15 mpg

all stock drivetrain and motor..
v6 3.0 automatic 1989 pickup extended cab 4x4 w/o locking hubs with 113000 miles

with new cheap exhaust shop cat back exhaust
new air filter
plugs
and oil change

 

While my truck has been in the shop I've been driving my stock samurai it gets around 30 mpg

 

For some reason my 22re is down to 19.8 mpg. I used to get 22 mpg. My Cat is original and I was wondering if I would gain any mpg by removing it. I would think the cat has to be fairly clogged up by now.

 

Hilux, yes you would get more mpg if you removed the cat. however itll sound like a tractor since its a 4cyl...you could half core it like i did, or buy a hi flow one.

 

Re-adjust or replace (and re-adjust) your Throttle Position Sensor. I had same issue, idle was all over. Check first with an ohmeter to see if it's bad before you blow $100 on the part.

Back on topic, my 91 3VZ-E pickup used to get 14-15 MPG and that was mostly highway. I got a muffler job done, replaced the exhaust with larger piping and put a straight through Magnaflow on it and I got 17+ MPG on the last tank (driving in the Sierras), hoping for more on this tank. Going from 14-15 to 17-18 isn't a huge jump numbers wise but will save me 20%+ on gas. Next: checking O2 sensor and VAF since I'm running rich. Might ever break 20 MPG if I'm lucky.

The guy at the muffler shop said he just worked on a truck just like mine that was getting in the upper 20's. He put a throttle body extension on and had a chip regulating fuel and air flow. After the muffler job was expecting 30+ MPG. So, if you put a TON of money and work into it, it's possible to get those high MPG since our trucks use WAY too much gas, much more than it needs.

 

89 4x4 5spd shortbed dlx. 202000 miles. Got it 2 months ago, not done any mods, and I think it needs a headgasket doing (guess what's on the plan for tomorrow)

Anyway, mostly 55mph driving, some hills (I'm in rural Ga)
According to aCar (handy android app) we've been averaging 23mpg. Not bad since it's my wife that does most of the driving, and until we got it, she'd never driven a manual.

When we got it, it had been sitting for 5 years. It was supposed to be worked on, for our 16yo's first car, but smashing a camshaft in our lumina meant it went from 'got to be prepped for my daughter' to 'has to be on the road TODAY' (and took a fuel pump to do so.

I'm not happy with the 23mpg though, so I'm going to do better.

 

"I'm not happy with the 23mpg though, so I'm going to do better."

With that kind of mileage, one can assume you have the 22re. And 23 is actually pretty good considering our vehicles are blocks with wheels. So if you think you are going to get better, you better plan on driving slower....

I actually use neutral when I can, ex: down hills, glide to stop lights, etc. My Dad drove truck and called that "Mexican overdrive."

 

That's one thing I've heard about those 2.7's....not only do they have more power than our 2.4's, they also get better gas mileage. Yours might be better with smaller tires.

 

On a recent road trip I got 21.1, 19.8 and 20.5 on three different fuel ups. This was averaging 75 mph on highways. The worse mileage was when I was going 80+ to get the hell across Nevada.

I have the v6 standard, and I had a bed topper on ( but no load).

 

yes, the 22re. I'm getting some hesitation, and oil and water is dropping, so I'm doing the headgasket as i said. I know I can get better.

gliding to stoplights actually uses more fuel. slowing down with engine braking in gear, uses almost no fuel, while you're using idle-fuel in neutral.

I managed to get our last car (91 lumina) to 33mpg, and thats with a bigger engine, heavier car AND a slushbox. It's all about driving half a mile down the road!

 

Hey man..... thanks for the input..

I've been through this motor around 20 times.... including resistance and voltage values on sensors/at ECU...... and it's a nearly brand new TPS with around 5K on it... Adjuster per 4Crawler/FSM instructions. Couldn't get it any closer to dead on without a scope, ya know? AFM's, tried 3 now(buddies who run perfect allowing me to swap) and others I've just got on the cheap from working/smoothly running motors.

2 ECU's have been in there(donor in there now, gonna swap back in my original since nothing changed).

02 is Denso and new and NOW on the stock exhaust mani where it should be(removed the LCE Header where the 02 was set further back... Gonna have an 02 bung put on it at the collector, at least, and slap it back in there, eventually.

IACV is OEM and no more than 5K miles old.

Can't find a vacuum leak to save my life with 70% Ether.

New EGR Modulator

SEEMINGLY working FPR VSV, but even bypassed, no difference.

10K on Bosch Premium Fuel Pump(yes, I know, OEM is better... this was when this all started, didn't think it would matter... and honestly, it shouldn't...)

Fuel Filter is fairly new and i would think more likely cause 'constant' drama and under power the rig all day... not only at warm restarts.

Plugs and Wires are new Denso plugs and pretty new 8.5mm Magnecore wires from LCE

**********************************

Original;

FPR, EGR, Charcoal Can., Damper, Dizzy, Ignitor, Coil, Injector Resistor........

********************************************

Just read something I've missed many times when reading 4crawlers "Fuel Pump Cheap Tricks" page.... Gonna reread it... But he's mentioning when he had trouble on hot restarts, his AFM was the cause(the vane activates the fuel pump once the COR has kicked on the Pump.... So I guess he couldn't get it to open enough to activate it at that point when he wrote it. As I said, gonna reread it... But my problem is NOT starting... it starts right up when fully warm and seems to purr at 750... For around 5 or so seconds.... Then gradually(over 3-5 more seconds) it idles down to 500-475rpm and seems to be running like a CAM'd 327! (not power wise... Power wise it's a slug for that 20 seconds or so that it does that)... Like a CAM'd V8, it almost can feel like it's loping the point of running on 3.

I would think Vapor lock or something of the sort... BUT, .... seeing that it seems like it's running on 3, I almost wonder if the coil is overheating/Ignitor is wonky or something of the sort.... But why would that just come on after running a few seconds and only for 20-30 or so.

When I feather it while it's doing it... or just take off... it seems to come out of 'that thing' much more quickly than if I just let it run. BUT, letting it run... IT WILL come out of it eventually... This leads me back to Fuel or Vapor lock or something. Almost like a pair of injectors is not firing for a few seconds.

Once I take off and it comes out of it(and anytime before, like when starting cold in the morning).... It runs like a Bat out of hell for a 22RE(plenty have driven in it and/or tried to keep up, and will tell ya so, haha).... NOT a rocket... but the quickest 22RE I've ever owned out of 7. (I built this one from the ground up, even machining much of it... Modified the head and valve train a tad, new valves, Dual stage springs, manganese bronze guides, mild port and polish.....Nothing "SUPER-STROKER" dramatic or anything... But with 4.30's on 31's, i can do 93+MPH on flat ground with no wind.

The idle down thing doesn't seem to be getting worse.... But, it's neither getting better hahaa. I'm not really spending any money collecting parts to swap in, etc... All of them can easily be sold or used on a donor motor, anyhow... BUT, I'd like to do one thing at a time, THIS TIME, avoiding missing the culprit like I have when fully rebuilding and replacing 20 things, ya know?

Sorry guys... That's all... I didn't mean to elaborate.... BUT, it seems to go nowhere on my build, etc... So thought I'd throw it out here, once more, especially since my mileage in town is PRETTY MUCH, 'DOWN RIGHT POOR', City/Stop and Go-L.A.

**************************************************

All that said............ After airing up the 32 MT's to 40#psi..... It seems to be getting yet a lil better mileage, still. I'll find out when I fill up.... But this tank so far is VERY "MIXED" driving, ya know? 50Miles or so Freeway, smooth sailing.... 50 Miles or so, so far, City Stop and Go(where you sit for 3-4 Minutes at a time, every light, then go for a couple minutes.. then stop again for 3-4..... / Let's put it this way.... The other day, it took me 40 minutes to go 6 Miles./ Pacific Coast Highway from Torrance, CA to Harbor City CA was VERY congested due to a wreck.

The 31's will go back on soon... However; I might be doing another Day trip to the mountains, soon.... SO, why pull em just to put em back on, right? lol.

 

PS> Not happy with 23mpg's? It's Average or above for a 22RE, far as I remember the Window Sticker's claim... (which is usually not something they 'reduce' in order to be 'humble or honest', hahaha... NOPE, they actually drive it with 10 computers on it and CRAWLING through town and never above 2200RPM and... so on, lol)

NOT saying you shouldn't go for better, ... by all means, STRETCH IT OUT, MAN!

Like I'd said before.... Got 24mpg's on the way to AZ/ 90274 Zip to Barstow, right before the 40frwy entrance. LOTS of hills... But I think the wind was at my back and I never went over 65, not really, ...and kept the air off until that point, just to test it out.

 

I think I said long ago in this thread that my '94 22R-E/2wd/5-spd gets 27mpg in mixed driving and 29+ mostly highway.

What I didn't know then that I do now is that a 4x4-esque 3.4L auto Tacoma PreRunner (faux-by-four) gets about 20 mpg on average. That said, it will still scratch rolling 31" tires on dry pavement, which I doubt even a healthy 3VZ-E could do on wet grass.

 

yes, the 22re. I'm getting some hesitation, and oil and water is dropping, so I'm doing the headgasket as i said. I know I can get better.

Ok....keep us posted. But I can't see it going much higher than that, esp. with a 4wd. Let some other guys chime in here.


gliding to stoplights actually uses more fuel. slowing down with engine braking in gear, uses almost no fuel, while you're using idle-fuel in neutral.

Ok, so our trucks shut off the injectors when the truck is in gear and foot is off the pedal? (Just checked this out online...)

 

I think I said long ago in this thread that my '94 22R-E/2wd/5-spd gets 27mpg in mixed driving and 29+ mostly highway.

The difference, Dirt, is your ride being 2wd...

You're right about those 3.4's...lotta juice, I hear.

 

Yes, it's also known as overrun fuel cut, which means the ECU shuts off the injectors above a preset RPM and below a preset throttle opening. AFAIK, it has been a feature of digital fuel injection since its advent around 30 years ago.