Author Topic: Getting horrible gas milage, please help (Read 3770 times)

mcg_916 · « **on:** May 10, 2007, 09:19:14 AM »

so my and my dad put in a rebuilt engine about 2000 miles ago and i think it's safe to say we didn't do it 100%

, anyway i'm getting about 11-12 miles per gallon and i have no idea what is wrong

:dunno, this is a 22re btw, any help or advice would be GREATLY appreciated, thx in advance

SACD_Runner · « **Reply #1 on:** May 10, 2007, 09:21:17 AM »

New fuel filter, air filter, plugs, cap, rotor, wires, clogged cat....? could be a combination of many things. how much have you checked?

79coyotefrg · « **Reply #2 on:** May 10, 2007, 09:22:25 AM »

tire size?? gears in diff's ??

did you reset the throttle position sensor??

*ROKTOY* · « **Reply #3 on:** May 10, 2007, 09:51:51 AM »

O2 sensor, I was getting about the same thing till I changed mine.

mcg_916 · « **Reply #4 on:** May 10, 2007, 11:24:32 AM »

i put a new rotor, cap, plugs, and wires and it also has a header on it, aside from that i havent really done much maintanance, i have 33" tires with 4.88 r&p
i did not reset the throttle position sensor or the O2 sensor, nor do i even know what those are

i apologize for my ignorance im a bit of a newbie at this

brainlessfool · « **Reply #5 on:** May 10, 2007, 05:02:38 PM »

I vote for the O2 thingy.

brainlessfool · « **Reply #6 on:** May 10, 2007, 05:04:49 PM »

Quote from: mcg_916 on May 10, 2007, 11:24:32 AM

it also has a header on it,
O2 sensor, nor do i even know what those are

It's that "thingy" in the header with a wire coming out of it. if you don't have any such "thingy" on your header I think we may have found the prob.

AaronB · « **Reply #7 on:** May 10, 2007, 05:44:13 PM »

you said thingy

79coyotefrg · « **Reply #8 on:** May 10, 2007, 05:49:00 PM »

and the throttle position sensor is the sensor looking "thingy" where the air goes thru the throttle plate, it tells the computer the "position" of the throttle

Plowking · « **Reply #9 on:** May 10, 2007, 06:07:50 PM »

My 22R got 11 MPG, no matter what I did and my 3.0 gets 10 if I am lucky. Never got good milage with any toyota I have owned Avg 200 miles per tank ( Truck) 3.0 gets 175 per tank.

Good luck.
Like Big Mike would say think smart Lighten up your truck, run synthetic oils in gear box and rears for less resistance.

Good Luck

brainlessfool · « **Reply #10 on:** May 10, 2007, 07:01:54 PM »

I have not done any of that stuff and get 18mpg with my 83 22r, the thingy weights 3850 lbs.

RABIDYOTA · « **Reply #11 on:** May 10, 2007, 08:13:38 PM »

22MPG 33BFG's 4.10 gears SAS. 91 22RE 270 cam 2.25 exhaust. and drive it like I STOLE IT!! check you timing, then check you'r TPS like 79coyotefrg said , (trick un plug and see if any change in how it runs) if no change, reset or replace

mcg_916 · « **Reply #12 on:** May 11, 2007, 05:48:27 PM »

thanks for all the help guys, ill try to get some "checking" done this weekend, and also i dont know if this matters but it is fuel injected, sorry i didnt mention this earlier but like i said i am a rookie

yotaboy79 · « **Reply #13 on:** May 11, 2007, 06:12:47 PM »

actualy you did mention that its fuel injected you sead it was a 22re which is efi the 22r is carb, im thinking o2 sensor and you getting better mialage than me ive got a dieing 20r that gets bout 6-7mpg it runs like crap but it still some how runs

*ROKTOY* · « **Reply #14 on:** May 11, 2007, 06:14:22 PM »

I'll say it again O2 sensor, when I changed mine I went from 12 Mpg to on average about 20 mpg. This o2 thingy is that thing that sticks out of your exhaust manifold or header.

Plowking · « **Reply #15 on:** May 11, 2007, 06:16:29 PM »

Pull the codes off the computer and see what pops up

RABIDYOTA · « **Reply #16 on:** May 11, 2007, 10:14:10 PM »

codes only work if check engine lite on??

Plowking · « **Reply #17 on:** May 12, 2007, 06:02:37 AM »

I am not sure but it is easy enough to check for codes

BLACKDOG · « **Reply #18 on:** May 12, 2007, 11:44:37 PM »

Quote from: Plowking on May 10, 2007, 06:07:50 PM

My 22R got 11 MPG, no matter what I did and my 3.0 gets 10 if I am lucky. Never got good milage with any toyota I have owned Avg 200 miles per tank ( Truck) 3.0 gets 175 per tank.

Good luck.
Like Big Mike would say think smart Lighten up your truck, run synthetic oils in gear box and rears for less resistance.

Good Luck

that is terrible!! I get 17-18 mpg, and thats with 5.29s and 35"s

mcg_916, check your codes, even if the light isn't on, a code may have tripped at some point in time. in the diagnostics port on next to the fuse box in the engine compartment, put a jumper wire (paper clip) in terminal Te1, and E1. Then you turn the key to the ON position, and count the flashes of the echeck engine light.
Here is a very helpful link

http://www.off-road.com/toyota/tech/codes/

mcg_916 · « **Reply #19 on:** May 14, 2007, 08:50:26 AM »

well, i checked for the O2 sensor and... there isn't even one there

there isn't even a place to put it on the header, so where exactly am i suppose to put it?

*ROKTOY* · « **Reply #20 on:** May 14, 2007, 08:53:19 AM »

Quote from: mcg_916 on May 14, 2007, 08:50:26 AM

well, i checked for the O2 sensor and... there isn't even one there there isn't even a place to put it on the header, so where exactly am i suppose to put it?

Is this a 22R or RE? Fuel injected or carbed? If it is fuel injected then you more than likely found the problem, you got to have an o2 and if you don't you are going to have to get a header that has provision for one, or find a weld in bung for it and weld it in. Then you will have to find the connection for it to hopefully it is just hanging there, if not you will have to trace it from the computer or just run a new one.

mcg_916 · « **Reply #21 on:** May 14, 2007, 12:14:15 PM »

it is fuel injected, im think im just gunna look for a new header, thx a lot for all the help guys, i sure as hell wasnt going to fiugre this one out by myself

Tool Pimp · « **Reply #22 on:** May 14, 2007, 12:25:37 PM »

only drive down hill

Rocksurfer · « **Reply #23 on:** May 15, 2007, 08:27:56 AM »

Check and make sure you don't have a brake dragging.

~tc~ · « **Reply #24 on:** May 15, 2007, 07:05:48 PM »

Tire pressure has a bigger effect than just about anything in my experience.

With gas over $3/gal (prob over $4 for you Cali guys), tires are cheaper than gas - don't worry about the wear!

DanS · « **Reply #25 on:** May 15, 2007, 07:44:06 PM »

If I read correctly that you do not have an O2 sensor, I'm surprised you havent noticed the 'Idiot' light to indicate a code fault requiring attention. Try to locate the wire (85 model) or wires (86 to 89) and three or more (from 90 and up), this will indicate the O2 sensor required.
I welded the O2 bung vertical on the header collector and found it to work fine, this might have something to do with my 4Runner being a 1985 and originating from Japan and shipped to Vancouver with no pollution requirements (ie. no pump, no cat and minimal Egr). My son-in-law's 87 4Runner requires a 2 wire and the header I ordered came with the O2 bung welded onto #2 Header tube just after the cross-over pipes.

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