MPG issue
#4
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If you're running winter gasoline blended with more ethanol, that will also cost you mileage. Ethanol has about 1/2 the energy/gallon as gasoline, so a blend of 15% ethanol will reduce mileage by about 7-8%.
#6
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I clocked it at 25 and that was doing slightly more highway driving but not by a great degree. my auto used to get 20,but I think 25% reduction is quite a big difference.Sure it could be many factors,been 60k since last tune up. I am going to do a tune and check timing(compression while I got the plugs out) pcv and valve adjustment. Will report back any findings.
#7
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I would change out the O2 sensor first. That seems to be the biggest culprit for MPG drop when nothing else has changed. If it's never been replaced, I GUARANTEE you'll see an increase in MPG.
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#9
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25MPG? I don't think I've ever seen that from my '87 4Runner even when it was new. Even the original factory specs call out 20 city and 23 highway, but with the 30" tires I pretty much see just under 17MPG for a mix of city and highway.
Does anyone else feel that an oxygen sensor change is going to make a difference, especially considering it passes CA smog testing w/o issue?
Does anyone else feel that an oxygen sensor change is going to make a difference, especially considering it passes CA smog testing w/o issue?
#10
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I would be so very happy with 20mpg. I get 12 to 15 mpg
If your getting 25mpg it must be downhill out of gear.
Just how many times did you manage to get 25mpg ?/
Unless your using very controlled conditions the best you will get is a good guess.
Want the best mileage run high tire pressure so you have the least amount of rubber in contact with the road.
Strip all excess weight out of the vehicle( most days I have at least 500 extra pounds)
Good tune up Don`t forget the air filter
If your getting 25mpg it must be downhill out of gear.
Just how many times did you manage to get 25mpg ?/
Unless your using very controlled conditions the best you will get is a good guess.
Want the best mileage run high tire pressure so you have the least amount of rubber in contact with the road.
Strip all excess weight out of the vehicle( most days I have at least 500 extra pounds)
Good tune up Don`t forget the air filter
#12
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Tune up with factory parts,air filter,pcv valve, valve clearance adjustment(exaust were .002 too tight,intakes were in spec),oil change,new rear diff oil,new man tran oil.With pretty lengthy warmups its back to 25.
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