Running lean question. (Don't have NOS)
#1
Running lean question. (Don't have NOS)
I have A/F ratio guages installed on the front and rear O2 sensors on my '96 SE. On the way to work this morning, I noticed my rear one was running lean while the front one stayed in the stoich area. I was coming up a slight incline at about 3/4 throttle. The car didn't downshift so it was lugging a little bit, but it was still accelerating pretty good. It ran this way for about a mile before the car got up to speed and the guages went back to bouncing back and forth. Is this a problem?
#2
Re: Running lean question. (Don't have NOS)
Originally posted by BSwithTF
I have A/F ratio guages installed on the front and rear O2 sensors on my '96 SE. On the way to work this morning, I noticed my rear one was running lean while the front one stayed in the stoich area. I was coming up a slight incline at about 3/4 throttle. The car didn't downshift so it was lugging a little bit, but it was still accelerating pretty good. It ran this way for about a mile before the car got up to speed and the guages went back to bouncing back and forth. Is this a problem?
I have A/F ratio guages installed on the front and rear O2 sensors on my '96 SE. On the way to work this morning, I noticed my rear one was running lean while the front one stayed in the stoich area. I was coming up a slight incline at about 3/4 throttle. The car didn't downshift so it was lugging a little bit, but it was still accelerating pretty good. It ran this way for about a mile before the car got up to speed and the guages went back to bouncing back and forth. Is this a problem?
Dave
#3
Re: Re: Running lean question. (Don't have NOS)
Originally posted by Dave B
It may be the beginning signs of a O2 sensor on it's way out. It's my understanding that the rear bank sensor is usually the one that fails. I also think that having aftermarket Y-pipe inherintly make our cars run a little leaner than normal. What were your rpms at when you noticed this problem. Were they traveling thru the 2800-4000rpm range at the time?
Dave
It may be the beginning signs of a O2 sensor on it's way out. It's my understanding that the rear bank sensor is usually the one that fails. I also think that having aftermarket Y-pipe inherintly make our cars run a little leaner than normal. What were your rpms at when you noticed this problem. Were they traveling thru the 2800-4000rpm range at the time?
Dave
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MaximaDrvr
7th Generation Maxima (2009-2015)
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08-19-2015 08:20 PM