My Gas Mileage Sucks! Help!
- Thread starter NViejeP
- Start date
sharp4runr
New member
Ron did you you also account for the change of tire size and adjust your miles driven accordingly?
Just filled up.
First fill up was at 68838 miles for 13.8 gallon.
Drove 158.2 miles.
At 68996 miles I got 14.681 gallons.
Goes into 10.77 miles per gallon. Maybe 10 - 15 of those miles are highway. Rest are stop sign, and red light districts. I do drive kind of hard, but this tank I took it easy and slowed down. It is the cold and rainy season here in San Francisco.
This seems AWFULLY low to me? Is it normal? I have some friends who drive around the same type of miles as me in sedans reporting around 150-175 miles per tank...
First fill up was at 68838 miles for 13.8 gallon.
Drove 158.2 miles.
At 68996 miles I got 14.681 gallons.
Goes into 10.77 miles per gallon. Maybe 10 - 15 of those miles are highway. Rest are stop sign, and red light districts. I do drive kind of hard, but this tank I took it easy and slowed down. It is the cold and rainy season here in San Francisco.
This seems AWFULLY low to me? Is it normal? I have some friends who drive around the same type of miles as me in sedans reporting around 150-175 miles per tank...
RonMAIDEN
Super Moderator
I left my ECT on for 3/4 of the tank and did some driving in the mountains so coming down distorts the mileage a bit since I'm not in the throttle but on the way up I was on it quite a bit and I got 16.5mpg but this time I'm going to keep the ECT on and will be doing my regular around town driving and see what I get.
Doktor Ron
New member
i too have a 2000 4r. and having about the same problem. but 1 tank i'll get 14.5 next might get 12.5. no codes show up. but i've replaced upstream O/2 sensor, fuel fliter, new plugs. MAF sensor, ckecked odometer by other car traveling same distance and by mile maker on interstate, filled up on same fuel pump most of time. but i've still not got to bottm of this. i've got 9500 miles and it's 10 years old so going to repalce timing belt soon. if you get a answer that works for you, let us all know.
12guns
New member
Not sure if it's been mentioned, but your in town mileage will be MUCH worse than strictly highway driving. I had a 96' Tacoma w/ the same 3.4 you have and it got 21 w/ stock tire highway and more like 14 in town. Anytime you floor it, it kills your average. If you can or are bored, fill up, top off the tank, reset you trip odo and drive for a hundred miles or so on the highway. When you fill up you can check it and I promise it will be much much better. I don't ever like to calculate my in town mileage cause it always sucks! Hope you get it figured out!
I think you mileage is normal for "stop and go" driving. Can't expect much more out of a SUV 4x4
I think you mileage is normal for "stop and go" driving. Can't expect much more out of a SUV 4x4
zsmithku
New member
I posted the below paragraph on another post, but it may help you out. Google the TSB and see if your VIN falls within the range of needing certain parts replaced. It would at least give you an idea of what the main problem would be.
"Unfortunately, for quite a few '99 and '00 model 4Runners this is a common problem. I actually just had this problem fixed at my local dealership.
Below is the actual TSB from Toyota addressing the issue and how to fix it:
Toyota Service Bulletin (TSB) EL010-00 Title: Fuel Gauge Inaccuracy
FYI, for a '99 SR5 your fuel tank should hold 18.5 gallons. Having this problem fixed allows you to reach that full capacity.
It's not cheap to get this fixed since you need to replace a electronic plate in your dash and get a new fuel sensor, plus a few odds and ends. Many guys that expereince this issue exclusively use the trip odometer and keep track of how many miles they can go."
Hope that clarifies the issue for you.
"Unfortunately, for quite a few '99 and '00 model 4Runners this is a common problem. I actually just had this problem fixed at my local dealership.
Below is the actual TSB from Toyota addressing the issue and how to fix it:
Toyota Service Bulletin (TSB) EL010-00 Title: Fuel Gauge Inaccuracy
FYI, for a '99 SR5 your fuel tank should hold 18.5 gallons. Having this problem fixed allows you to reach that full capacity.
It's not cheap to get this fixed since you need to replace a electronic plate in your dash and get a new fuel sensor, plus a few odds and ends. Many guys that expereince this issue exclusively use the trip odometer and keep track of how many miles they can go."
Hope that clarifies the issue for you.
SingaporeJones
New member
I filled up and drove 243 miles at about 65 the entire way before hitting empty, seems pretty bad.
Tinigunner11
New member
seems about normal. I can can get about 280 max out of my tank, that's with a fair amount of mods, and I baby it.
Clovertucky
New member
I just topped off, after driving hilly, winding, fast road, in and out of O/D. Used 4wd twice for about a mile each time, for 17.89 MPG. (205.6 mi/11.488 gals)
When I was commuting 28 miles each way, highway speeds, I averaged 21.
Retirement is costing me 3 MPG, I guess.
When I was commuting 28 miles each way, highway speeds, I averaged 21.
Retirement is costing me 3 MPG, I guess.
crabtreerr
New member
This may sound stupid but I'd start with putti g an extra 5 psi on the tires and check it again.
Sent from my SM-G955U using Tapatalk
Sent from my SM-G955U using Tapatalk
Huskie
Junior Member
Oil dipped below $45 a barrel today so YAY!
If you really wanna get clinical about it, grab a socket wrench with an extension and pull your spark plugs. See if the spacing is correct and that they're in decent shape (no cracks on the ceramics) otherwise change them. Check your spark plug wires as well.
Also you might want to check how long ago your transmission fluid/transfer case/Differential oil was changed. Lack of friction/resistance and lead foot control directly translates to more MPG, every mile traveling over 65 MPH will cost you in gas. If you drive around with a huge roof box, it will kill your gas mileage.
I was getting 21 to 23 MPG highway on my 2002 Sport edition with 274K miles but recently I've been getting 17-18 MPG with a noticeable loss of power going uphill. Been trying to figure out why myself for a few weeks now, this is the stuff that I've already tried.
If you really wanna get clinical about it, grab a socket wrench with an extension and pull your spark plugs. See if the spacing is correct and that they're in decent shape (no cracks on the ceramics) otherwise change them. Check your spark plug wires as well.
Also you might want to check how long ago your transmission fluid/transfer case/Differential oil was changed. Lack of friction/resistance and lead foot control directly translates to more MPG, every mile traveling over 65 MPH will cost you in gas. If you drive around with a huge roof box, it will kill your gas mileage.
I was getting 21 to 23 MPG highway on my 2002 Sport edition with 274K miles but recently I've been getting 17-18 MPG with a noticeable loss of power going uphill. Been trying to figure out why myself for a few weeks now, this is the stuff that I've already tried.
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