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p0171 bank 1 lean and car stumbles under wot and feels down on power

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Old 11-03-2009, 12:51 PM
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DudeMan
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Default p0171 bank 1 lean and car stumbles under wot and feels down on power
car bucks barely when wot and you can tell it doesnt pull nearly as hard as it should.

cleaned the maf checked for leaks so is it just down to a o2 sensor?
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Old 11-05-2009, 03:15 AM
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sektor 11
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I was talking to a tech that works here with me...he said snap your throttle, if the car doesn't rev up like it should its the MAF.
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Old 11-05-2009, 09:04 AM
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Originally Posted by sektor 11
I was talking to a tech that works here with me...he said snap your throttle, if the car doesn't rev up like it should its the MAF.
it revs up fine and we even took the maf off of my friends car and still did the same thing.

my mpg is horrible too right now
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Old 11-06-2009, 03:02 AM
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well, if its an O2 sensor you could always hook up a scan tool and watch the data stream of them to see which one it is.
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Old 11-06-2009, 09:12 AM
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Originally Posted by sektor 11
well, if its an O2 sensor you could always hook up a scan tool and watch the data stream of them to see which one it is.
yea im probably just going to bring it up to nissan... my new motor should be here anyways so im not stressing it along with my new turbo
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