10mpg with 32's
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10mpg with 32's
i have a 1991 runner with a 3.0. i just put on 32 inch bfg mtr's and im getting 10mpg on average . is there anyway to get better gas mileage without changing tires? i already have a kand n intake and a custom exhaust.
#4
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Then you probably have 4.10, or 4.30 at best. Your 3.0 isnt the best in the mpg dept and now pushing those tires is killing it. Need taller gears.....and a new 02 sensor probably.
Last edited by CJM; 01-18-2007 at 09:44 PM.
#7
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I just went thru the same thing and as soon as i changed my 02 sensor it came back to about 15.3 mpg with 32x11.5 with 4:10s getting my 5.29s today hope to bring it up even more but regearing is definitly some thing to think about if your gonna stay at that tire size forever i was told 4:88s is the way to go i will be going 35s with 5:29s and hope to get better then 15.3
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#8
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If you have an auto your gearing would be either 4.56 or 4.88's. If you went from the stock 225's to 32's then regearing would deffinitely help but if you went from the 31's then either O2 or complete tuneup is in order.
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it was tuned the day before i bought it. i went to the 32's from 31's, but even with the 31's the mpg was horable. it is basically a brand new engine, it has less then 8k miles on it.
Last edited by nor*cal runner; 01-21-2007 at 01:46 AM.
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I second the O2's I'm running 4.88's with 33x12.5's and before the O2 bit it I was getting 15.5, now about 12mpg. I also recalibrated the speedo (was off by 10mph) that'll make it look like your not getting as good a mileage as you are.
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is it an auto or a manual? if an auto, you should expect a little bit worse mileage than a manual, but it shouldn't be near that bad. I've got a 3.0, 5spd, pushing 35x12.5 BFG MT's, regeared to 5.29's (look at the dark red curve). Not too bad IMO.
#17
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ever cleaned that k&n? I second the tune-up idea. Check your tire pressure as well. Also, if it doesn't already have manual hubs, those are definitely a nice thing to have. According to my haynes manual, it can also be timing-related. I run 32x11.5"s on my 3.0 with an automatic, stock gears, manual hubs. But mine probably weighs less as its a truck and not a 4runner.
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its an auto, i have auto hubs. ive never cleaned the knN, when it was last tuned i had the timing advanced a bit for more power but it was nothing huge.
the tires are at 36psi
the tires are at 36psi
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