1/4 tank of gas affect AFR?
#1
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1/4 tank of gas affect AFR?
Doing some data logs tonight and noticed my WOT AFR were getting lean.
So I drove to the gas station (20 minutes of highway driving, so I wasn't that low on fuel) fill up the tank and voila. My AFR are richer....
Any input?
So I drove to the gas station (20 minutes of highway driving, so I wasn't that low on fuel) fill up the tank and voila. My AFR are richer....
Any input?
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#7
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AEM pump.
I actually noticed it again the other day. Tank was almost full.....
I was just cruising around doing part throttle logs and after about an hour the AFR's would go VERY lean when slightly accelerating.
Almost like the pump was "tired" and needed a second before it would get going......
Any ideas?
Thanks!
I actually noticed it again the other day. Tank was almost full.....
I was just cruising around doing part throttle logs and after about an hour the AFR's would go VERY lean when slightly accelerating.
Almost like the pump was "tired" and needed a second before it would get going......
Any ideas?
Thanks!
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#10
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I have been experiencing a similar issue...my AFR goes way lean at partial throttle...to the point that the car started to bog down or stumble. It was not the fuel pump, it was not the injectors, it was not the alternator...but it may have been the coils... will let you know as I find out.