When I get a free day you
When I get a free day you can guess what I'm going to do with it. A trip to DC would be nice anyway. I'm hoping for 50 highway in my beast.
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Re: Quote:a far more consistent
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did some searching: overfilling the tank may put raw fuel into the tank vent line (on some cars the vent line connects to the top of the tank; on others it's at the top of the filler neck). if the vent system is filled with enough liquid fuel to saturate the charcoal canister effectively "blocking" the vent function, ODB2 cars will throw a code for Evaporative Emission Control System Malfunction. neato. i've been filling my tank this way for 10,000 km on firefly#1 and firefly#2, and haven't seen any codes. |
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You also cannot blame the mountains for your mileage. You calculated your mileage going up and down the mountains. While your gas mileage may have been worse going up, I'm certain that your gas mileage going downhill was ridiculously high. I have gotten 46mpg going from Salt Lake to Southern California before, b/c the trip is almost a constant downhill trip. If you want the best mileage, only travel downhill. :) |
xB odometer error
Nice to know that he ScanGauge is that close and I think it actually is because I went out for a longer ride today and found the gas needle still on the half tank mark for a few more miles like 250miles WOO WOO that puts me over 40mpg for sure and the engine is still breaking in as I drove today the mpg reading kept going up. I have 45.4 MPG average for this "half" tank of gas so far according to the ScanGauge. The speedometer speed on the ScanGauge was 2% low according to my GPS ant that I have adjusted so it may be a little on the higher side of the actual error of 1.5% - maybe I need to let some air out of my tires! Guys you do all realize how big a xB is right and to get this mileage is amazing as far as I am concerned. The best I have heard an xB getting is 39mpg.
I don't think there is any way to adjust the calibration on the odometer in the car unless there is some programming that can be done. What happens to the odometer if you coast with the engine off?? hummmm. As far as fillups YES the gas charcoal filter can be damages if the tank is over filled - they say this in my Geo Manual 1994 but just drive after filling and you should be ok. Hot days are the killer when that 10 gallons + wants to expand it WILL! Definately keep clicking - the xB has the filler hose enter the tank about 1/3 the way down from the top so a big air pocket is there and I clicked for a couple of minutes. You should also really slow down the fill rate at the end to as slow as the pump can go to allow the air to come out up the filler hose from the tank. The Geo wuld be filled up to the tippity top and spill gas when I screwed the cap in ARG!!! A little side to side would release some air but it like being filled up hill. The xB should be filled down hill for sure - need to find an unlevel station. |
Quote:I don't think there is
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Humm
Sounds like it is controlled by the onboard computer but I would really like to have the odometer powered up by a button to I can read the mileage without having the engine running - kills (lowers) the MPG reading sitting idle after a trip . . . it does seem to like starting easier next time however. Just called brother again, there is a sensor usually on the tranny near the axle going to the left front wheel that runs the odometer and speedo and he thinks it is controlled by the computer. May be the odometer reading is a little low to compensate for tire wear and will be more accurate when the tires gets smaller and spins more per mile.
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I will find a way to surpass 40mpg on long trips. My tires are at 40psi and I plan to do the underbody really soon. |
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Odds are the engineers at Nissan anticipated this and made the injectors fire less frequently while going downhill. I'm willing to bet that if you put a scangauge on your car and drove downhill your mileage would improve more than you realize. |
Gas used is mainly factored
Gas used is mainly factored between rpm and load. Higher rpm but much lower load = less gas used.
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