teriible gas millage .. lean to rich sensor off - Nissan Frontier Forum
 
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post #1 of 8 (permalink) Old 02-15-2017, 12:37 PM Thread Starter
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teriible gas millage .. lean to rich sensor off

noticed my fuel millage had been getting worse. new air filter oil change, cleaned throttle body, mass air flow, no exhaust leaks, ran a scan tool that came up for the lean to rich sensor being off. any ideas,, also glad to be my first post and happy to start sharing my 2012 Nissan 2.5l with ya's thanks
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post #2 of 8 (permalink) Old 02-15-2017, 01:13 PM
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Replacing fuel filter has worked for me in the past.

2001 Nissan Frontier Crew Cab 4x4 SE (Automatic)
Bought when it had 10 miles on 12/20/2000
As of February 15, 2017: 350,000 miles
** No Mods, just a lot of originals. **
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post #3 of 8 (permalink) Old 02-15-2017, 01:58 PM
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would this help

I have a 07 that averages about 13 mpg is that good for our trucks?
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post #4 of 8 (permalink) Old 02-15-2017, 02:03 PM
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I have a 07 that averages about 13 mpg is that good for our trucks?
Depends on a lot of things...but in general, I would say NO. See fuelly picture bottom of my sig for what is possible.

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post #5 of 8 (permalink) Old 02-15-2017, 02:09 PM
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Will be replacing fuel filter, hope that helps.
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post #6 of 8 (permalink) Old 02-15-2017, 02:24 PM
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Will be replacing fuel filter, hope that helps.
What does terrible fuel mileage mean? A lot will depend on where you live and how you drive?

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post #7 of 8 (permalink) Old 02-16-2017, 11:54 PM
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Replacing fuel filter has worked for me in the past.
Gen 2 don't have serviceable fuel filters. They are built into the fuel tank module.
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post #8 of 8 (permalink) Old 02-23-2017, 12:22 AM
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Generally routine checks should be able to help you solve any fuel efficiency issues if it's not caused by changes in your driving habits. I remember a story a customer told me about his mileage suddenly going bad and it turns out it was because his mum borrowed the car to go somewhere and she was terribly heavy-footed!
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