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Nissan XTerra Real World MPG

41 messages,  Last post on Nov 20, 2009 at 3:06 PM

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#39 of 41 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 41 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
#41 of 41 Re: mpg 2008 OR AT [gobo] by tmblweed Nov 20, 2009 (3:06 pm)
Replying to: gobo (Nov 10, 2008 10:01 pm) I just bought my 2007 2WD Xterra on Nov 11 09, I put 200 miles on her this past week, all around town..I have a light foot and after filling up today I saw I was getting 20.1 MPG...I am very happy with that . This is my 2nd Xterra and I am very glad to be back!

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