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SUVs Nissan Xterra Nissan XTerra Real World MPG
41 messages, Last post on Nov 20, 2009 at 3:06 PM
You are in the Nissan Xterra Forum. Your Hosts are steve_ & tidester
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.
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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)?
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Replying to: asa (Dec 19, 2008 3:26 pm) |
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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....
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Replying to: xtierra (Jan 25, 2009 5:49 pm) |
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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. |
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Replying to: xtierra (Oct 05, 2008 6:52 pm) 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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Replying to: gobo (Nov 10, 2008 10:01 pm) |
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