rdracer66

I think I need a tune up, I know I did not buy a honda civic or toyota prius. But I'm getting close to 290miles on a tankful. Not sure how low that gas light goes off at but I've yet to run out of gas. Also I'm not sure if I have a 16g or 18g tank. The time's i've run it that low I've usually only had to put a max of 16gallons in it. I'm sure 290 miles per tank is not disgraceful but I'd like to think I can get closer to 20mpg.
I typically drive the hwy speed 75mph but even going down to 70 has not increased it any if much at all. I have a url from TC on how to check the 02 sensor but as of yet not had a chance to check it. I bought this 4runner used with no records of any type. What all should I start checking/replacing to see if i can creep the mpg up a little.

Tubbyfatty

20mpg (sprry haha) is pretty good, I get that with my truck every now and then. Do you have an auto or manual?

Id replace the spark plugs, just get NGK v or g powers, 2.50 - 3$ a piece. Gap them correctly, I like to use feeler gauges.

Then if your spark plug wires look old and nasty, replace those, I replaced mine the other day and got some NGK wires from napa for $50. My old ones werent connecting on the spark plugs very well so my motor would have a miss.

You cant really get the mileage up past 20 or so because this motor is a pig but im sure those will help your in town mileage.

anthony1

iTrader: (1)

20 mph?
20 mpg is very good. I think I avg. about 15.

rdracer66

Maybe I mis spoke, I am getting between 16-18mpg depending on if I have a 16g or 18g tank. I'm not sure what size it is. I was hoping I could increase it to 20mpg or close as possible atleast. O and I have an K&N air filter that is clean best I can tell. O and it is a automatic

chrishf12

Sounds like it is running pretty good to me! But if you do the tune up don't forget about the distributor cap and rotor button.

anthony1

iTrader: (1)

It doesn't matter what size your tank is....
fill up the tank...drive for a while, write down the miles, go fill up...
divide the gas you put back with the miles you covered.....done.
It's more accurate if you can go back to the same pump cause everypump varies on the auto stop.

Never top off your tank after it stop.

rdracer66

Guess thats the price I have to pay to comfortably car camp and get up some 4x4 trails my daily driver S10 PU will not make. Think the ISR mod would be better or worse for gas mileage?

Marc

Nothing will give you much better gas mileage or power.

T4L

16-18 MPG on the 3.0 doesn't sound too bad. It could be alot worse. I don't know where you're from, but I'm gonna guess it's somewhere that doesn't have "winter" fuel. I average 16mpg (17 on a good day) during the summer and right now until about April, I'm gonna have to live with the 13 mpg that winter fuel provides.

rdracer66

Guess i'm expecting too much out of this old beast then. It does have 165k miles on her.
And I'm in Colorado so not sure what Winter fuel is?

Team420

I dont know if we have the switchover to "winter" fuel up here in Maine.... but I actually get better mpg's, and a bit more giddy up in the winter.... colder it is, the better they run.

clydehatchet

if i got 290 miles to a tank........ well, thats a wet dream.
94 3.0 runner with 158000 on the clock, recently tuned etc... i get 13.5 on average, im fairly easy on her being as there is no sense in pushin her faster than she can go. however she does have 33 1250's on.

gTgarrett

ha wait are u saying that if you have a 16 gal. tank you'll get 16 mpg?
That doesnt make any sense...

Tracey98277

haaaaaaaaaaaaa. i get 15 mpg even with a top end rebuild, maybe 17 with a light foot on the freeway.

Tracey98277

maybe mileage... but power is a function of money so at least that's possible.