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Nissan Pathfinder Real World MPG

49 messages,  Last post on Feb 19, 2009 at 7:05 PM

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What is this discussion about? Nissan Pathfinder, Fuel Efficiency (MPG), SUV

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#48 of 49 Re: WOW 05 Bad MPG? [waikylam] by ckone0814 Feb 12, 2009 (4:38 am)
Replying to: waikylam (Feb 03, 2009 4:16 pm) OK so i've been thinkin about this more and i got me to wondering... assuming an 05 has an oil cooler (i'm pretty sure it does) could this be helping to reduce mpg when it's winter? oil is always cold unless driven a good distance/time?   So anyway, it's been in the 50's here the last few days and my 05 Pathy has definitely shown increased mpgs with the warmer temps. I'd guess 1.5 - 2 mpg. so i'd say this adds some support to my "cold oil/oil cooler" theory?
#49 of 49 MPG by xtierra Feb 19, 2009 (7:05 pm)
the best way to find out if your engine is performing correctly is doing a 0 to 60 mph and seing how many seconds it took..... on my v6 2005 xterra, i got 9.9 seconds...........something was really wrong.....specially since i have the 14hp K&N intake kit..... i began to be scared thinking maybe a ring was bad on a cylinder... wrong.... i dont like that when i turn off the truck and sit in it.. sometimes i will see guage needles drop down and go back to normal...... the question is if its re-setting something with the ECU../////////////////// who knows... so if you have disconected the battery for cleaning the posts or something else.... your ecu is under re-learing mode and if you drive as usual the air/fuel mixture will be set wrong.... thus causing a horrible 0 to 60 mph test... disconect your battery for 30 minutes.... then re-conect.. now the ECU is officially under re-learing air/fuel mixture...... start the truck and allow fluids to warm up.... then drive with rpm's under 2,000 (i stayed from 1,400 to 1,600) then head to open highway and get truck up to 60 mph for 15 to 20 minutes..... on some tech sites i have read that 50 miles of driving is best for re-learning procedure.

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