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Nissan XTerra Real World MPG

40 messages,  Last post on Oct 24, 2009 at 9:57 AM

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#31 of 40 Re: 2003 xterra mpg [rckev] by xtierra Oct 05, 2008 (7:14 pm)
Replying to: rckev (Jan 25, 2007 10:01 am) i am willing to bet that your mass air sensor is dirty and you can clean it with mass air cleaner using gloves and making sure you spray the actual sensors..... also unlike my 2005 xterra.... if your xterra has a carbon canister like the next generation xterra, your carbon canister has a breather line that might be full of dirt and dust causing your fuel vapor line that sends the vapors from the gas tank to the intake to have some dust mixed with it causing your bad mpg...... all 2005 + xterras who use it to off road and dirt road conditions will have their breather line pollute their carbon canister thus effecting their mpg ..in my opinion.....
#32 of 40 Re: mpg 2008 OR AT [dat2] by gobo Nov 10, 2008 (10:01 pm)
Replying to: dat2 (Aug 28, 2008 12:58 pm) Sorry for the delayed response; haven't been here in awhile! I'm consistently getting 21.5-22.5 mpg at highway speeds - usually 72-75 mph. I now have just under 10,000 miles on the Xterra, which I got new in April of 2008. I'm very pleased with the vehicle and impressed with the off-road capability. Mileage in real off-roading is significantly lower --- in the 17 mpg range for very steep, rocky terrain. The 2wd would definitely not negotiate those roads... Replies to this message: dat2 (Nov 10, 2008 10:42 pm)
#33 of 40 Re: mpg 2008 OR AT [gobo] by dat2 Nov 10, 2008 (10:42 pm)
Replying to: gobo (Nov 10, 2008 10:01 pm) So I take it you must have a 4x4 (since you mention off roading)... sounds like very good mpg all things considered!   I've had my 2wd 6spd just for about 3 months now and have driven 4000 miles. I usually get 22-24 on the hiway, of course the lower mpg above 75 mph. Around town between 17-19 mpg. Very good all things considered for such a powerful and solid utility vehicle.
#34 of 40 '08 Xterra MPG by bjss Dec 11, 2008 (1:32 pm)
Currently in a loaner '08 Xterra 2WD (for 2 weeks now), really solid vehicle, but MPG around town has been disappointing - averaging 13-14 MPG...vehicle has 14k miles on it. Replies to this message: asa (Dec 19, 2008 3:26 pm) bjss (Jan 18, 2009 4:13 pm)
#35 of 40 Re: '08 Xterra MPG [bjss] by asa Dec 19, 2008 (3:26 pm)
Replying to: bjss (Dec 11, 2008 1:32 pm)     Is your '08 2WD loaner an automatic or 6-Speed? Off Road or other (X, S or SE)? Replies to this message: bjss (Jan 18, 2009 4:13 pm)
#36 of 40 Re: '08 Xterra MPG [asa] by bjss Jan 18, 2009 (4:13 pm)
Replying to: asa (Dec 19, 2008 3:26 pm) Sorry for delay in responding...Loaner was Auto, S....
#37 of 40 xterra mpg tip for everyone.. by xtierra Jan 25, 2009 (5:49 pm)
even though my 2005 xterra auto 2X4 just rolled 100,000 miles, i was shocked when out of no where my mpg was around 11 mpg city.... i began by cleaning injectors,new spark plugs, cleaned throtle body, new tranny fluid, new rear diff fluid....and moved up to 13 mpg..... with no service engine light on, i was very confused and began to think my engine had some serious problems- even checked oxigen sensors.......maybe a ring on the cylinder was going .... no oil leaks and always changed oil every 3,000 miles...... i was very pissed off..... no one could tell me what the problem was..... then out of no where, i did a 0 to 60 mph test to see how the engine would perform.... 9+seconds..!!!! so there was a problem somewhere... finally was recomended to a mechanic that checked for any leaks aorund air intake, and all around intake area.. everything was normal.. after he plugged in the computer and took some time going through the menu... he showed me that my engine was performing at 86%..... wow.... that was the reason for the 9 seconds 0 to 60... he re-set computer and told me about the re-learing procedure.... then after telling him everything i had done to the truck before the horrible mpg.... it all came back to me cleaning my battery posts and the ECU getting re-set... once i started the truck i drove as usual and the air/fuel mixture was set wrong.. causing my horrible MPG... so if any of you xterra owners have disconected your battery for any reason and your MPG is abnormal... that is the reason.... Replies to this message: dat2 (Jan 25, 2009 6:48 pm)
#38 of 40 Re: xterra mpg tip for everyone.. [xtierra] by dat2 Jan 25, 2009 (6:48 pm)
Replying to: xtierra (Jan 25, 2009 5:49 pm) So how do you reset your air/fuel mixture??
#39 of 40 how to re-set air/fuel mixture by xtierra Feb 19, 2009 (6:57 pm)
disconect your battery for 30 minutes.... then re-conect...... turn engine on.... the ECU is officially under re-learning air/fuel mixture mode..... allow engine to warm up... then plan your route to open highway.. keep RMP'S below 2,000 once on highway get up to 60 mph with low rpm's and stay at 60 mph for 15 to 20 minutes.... normally you should drive 50 miles for accurate ecu re-learning....   if you have any doubts about your mpg and if your engine is consuming more gas than usual, you will not get a service engine light coming on... everything will look and sound normal... the best way to find out is the 0 to 60 mph.... if you have a problem, you will get 9.9 seconds..... as i did...   when i got 9,9 seconds i though my engine had some serious issues...... i was wrong... just a simply re-setting ECU and driving with low rpm's while computer adjusted the air/fuel mixture.
#40 of 40 Re: mpg 1/4 tank gave me 25 miles!!!!!! there is a problem [xtierra] by rliss Oct 24, 2009 (9:57 am)
Replying to: xtierra (Oct 05, 2008 6:52 pm) fuel gauge dropping quick like that and staying on empty is the sending unit/fuel pump sold as one assembly piece for $425 -just replaced it on my '05 the flapper that floats on top of the fuel in the gas tank is conected to a circuit board and that is the problem on that assembly the board fried. Now service engine soon light came back on again. The nissan dealer plug it in and its the fuel vapor canister valve $138 piece. I do the labor myself these are nissan prices always have nissan plug it in to read out the problem my charges $110 my 2005 4.0l automatic xterra gets mixed driving in the midwest at 18.5MPG and now has 89K miles just installed EBC Green stuff brake pads w/ slotted rotors and s.s. brake lines runs nice, Yeah I did 89,000 miles and there was still meat on the original pads so my MPG comes from steady driving

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