MY fj62 sucks too much fuel!!!!!!!
- Thread starter fj62max
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How many miles on the truck? Might consider changing the O2 sensors. Do a search and you'll discover other member's opinions.
That is ungodly bad. Have you done a good tune up lately (plugs, wires if needed, rotor, cap, fuel filter, air filter,.... ) Is it throwing any codes on the computer? O2 sensors could be way bad.
How does it feel power wise? How is it heat wise? Any tranny problems?
How does it feel power wise? How is it heat wise? Any tranny problems?
With good fuel, and keeping it below say 70 mph, I get more than double that. Something is seriously wrong.
EDIT *Are you talking city or highway driving? Corrected for any oversize tires?*
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I am getting the same on mine...i am running 33's and she is sucking gas like its candy. I am installing a new fuel filter tomorrow so maybe that will help. She's get new plugs, wires, cap, air filter, rotor. I might need to looking into the o2 thing.
I'm getting about the same..and havn;t had the time to do a tune up yet either. I'll be interested to see what happens with your milage.
Do these have a diagnostic port or read out to see if it throws any codes?
Do these have a diagnostic port or read out to see if it throws any codes?
There is a diagnostic port on the fire wall on the PS. Run a test lead (i.e. paper clip) b/t the TE1 and E1 terminals, turn ignition on (don't start), and the check engine light will flash any codes. Do this with the engine warmed up. A constant on off blink is no code, any thing else will blink out with 1.5 seconds between digits (2 digit codes) and 4.5 seconds between different codes. If you have an FSM (or chilton's?) it will list what the codes are, if not post up.
Is there a formula to use for over sized tires?
Hmmm, never really checked mine in the city (afraid I would cry), your mileage may not be that bad then...... have you check on the highway? If you can get say 320-350 miles out of a tank on the highway, you are doing pretty good.
Give us a gas mileage figure, please. 10-12MPG in town driving is normal, IMO.
I agree, and 14-15ish seems pretty average for highway driving, depending how nice you are to the skinny pedal. 320-350 miles on a tank, even highway, seems like it may be a bit too much to be expected. Even when I was stock, before the lift and big tires, I couldn't ever get that kind of mileage.
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You can use that same formula to figure out mileage, instead of MPH as well.
(new tire diameter/stock tire diameter) * odometer mileage = true mileage.
I routinely get 550 km (340 miles) "usable" out of a tank on the highway. I generally try to stay below 110 km/h (68 m/h). That is with a 2.5" lift, and stock (29") tire size. Driving between school (Edmonton) and my folks place (Brandon), I can do the 525 km to Saskatoon without a fill, but need to dump a jerry can in on the stretch from Saskatoon to Brandon (620 km). When the tank hits about 7 or 8 liters left (about 2 gal) the fuel pick-up gets spotty. (I once made it to about 580km or 590km before the pick-up sucked air on a corner)
I run synthetic everything (engine, ATF, transfer and rear diff), and perhaps the cooler temps up here and night driving help a bit too. Also, the drive is almost dead flat (probably have to drop into 3rd for less than 5 min the whole way), and next to no traffic lights or stop signs, aside from 4 cities you pass through.
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No that's great mileage. It's just rare. You are one of the lucky ones. It seems that most people report averages of 14-15 highway. Of course, driving habits, region, and mods have a big effect on that. I will be the first to admit that I don't waste any time trying to get up to speed, especially getting onto the freeway.
Lots of stop and go city......... 10-11. Highway 65-70 14-16 depending on terrain
FJ62 has 112K and operates as normal
FJ62 has 112K and operates as normal
Some of those numbers seem pretty low, I'm getting a bit shy of what RockDoc is getting and have a carb rebuild due. I'm always surprised when some of the milage numbers get posted, have you guys passed emissions? I'd flip out with 10 mpg in town.
I'm beginning to wonder if old carbs and faulty smog systems are at fault.
I'm beginning to wonder if old carbs and faulty smog systems are at fault.
10-12 in the city/16hwy for my rig w/2" lift and 33"s. Not pretty with rising fuel prices here in Cali. Just recently
had the carb rebuilt and a complete tune-up.
had the carb rebuilt and a complete tune-up.
Ditto what everyone has said above.
Tires are probably the biggest offender IME. big and fat = bad mpg. Heavy weight lubes = drag on engine and drivetrain. Low tire pressure in any type of tire =REAL BIG loss of mpg.
Tune up, air filter, synthetic everything, 2WD, new spark plugs, clean engine internals, clean fuel injectors and carbs; etc, all make a difference.
My mpg dropped 3 mpg when my tires were only 3-4psi under the max of 35. Put as much pressure in your tires as they can stand, and as much as your back can tolerate (the ride).
Tires are probably the biggest offender IME. big and fat = bad mpg. Heavy weight lubes = drag on engine and drivetrain. Low tire pressure in any type of tire =REAL BIG loss of mpg.
Tune up, air filter, synthetic everything, 2WD, new spark plugs, clean engine internals, clean fuel injectors and carbs; etc, all make a difference.
My mpg dropped 3 mpg when my tires were only 3-4psi under the max of 35. Put as much pressure in your tires as they can stand, and as much as your back can tolerate (the ride).
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