trouble with plx sm afr

Hondata model coverage & ECU application questions.
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tweenpix
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Joined: Wed Sep 21, 2011 7:03 am

trouble with plx sm afr

Post by tweenpix » Mon Oct 10, 2016 8:54 pm

hello i have trouble with PLX SM AFR, when i add extra fuel, my gauge is show "LEAN", but must show "REACH".
voltage is 5v on d14 when is show lean

https://www.youtube.com/watch?v=NyBx1NYZIy4

bad sensor or bad controller plx?

datalog and calibration with video
https://youtu.be/5lCRFkfdJE8
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Last edited by tweenpix on Wed Oct 12, 2016 9:59 pm, edited 1 time in total.

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Spunkster
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Re: trouble with plx sm afr

Post by Spunkster » Tue Oct 11, 2016 9:27 am

Do not use D14 as it cannot read the full voltage range. Use D10 or one of the other inputs instead.

tweenpix
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Joined: Wed Sep 21, 2011 7:03 am

Re: trouble with plx sm afr

Post by tweenpix » Tue Oct 11, 2016 6:34 pm

Spunkster wrote:Do not use D14 as it cannot read the full voltage range. Use D10 or one of the other inputs instead.
my p28 is modified for read 0-5v on D14

i can set fuel in calibration and my engine work in IDLE on 19-20 afr

if i set more fuel and my afr less then 10.5~11 PLX is showing LEAN, if i decrease fuel ~% and my AFR more then ~10.5-11 PLX is show actual AFR

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Spunkster
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Re: trouble with plx sm afr

Post by Spunkster » Wed Oct 12, 2016 9:35 am

Without the calibration and a datalog it is impossible to speculate.

tweenpix
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Re: trouble with plx sm afr

Post by tweenpix » Wed Oct 12, 2016 9:59 pm

Spunkster wrote:Without the calibration and a datalog it is impossible to speculate.
update first post

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Spunkster
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Re: trouble with plx sm afr

Post by Spunkster » Thu Oct 13, 2016 9:32 am

If you are referring t the 1 minute mark then it appears to be reading correctly as the voltage in put is around 5 volts and it is showing it is very lean.

If it is reading incorrectly on the PLX itself, you might want to contact them for assistance to determine why it is reading inversely.

tweenpix
Posts: 20
Joined: Wed Sep 21, 2011 7:03 am

Re: trouble with plx sm afr

Post by tweenpix » Thu Oct 13, 2016 6:37 pm

Spunkster wrote:If you are referring t the 1 minute mark then it appears to be reading correctly as the voltage in put is around 5 volts and it is showing it is very lean.

If it is reading incorrectly on the PLX itself, you might want to contact them for assistance to determine why it is reading inversely.
thanks

tweenpix
Posts: 20
Joined: Wed Sep 21, 2011 7:03 am

Re: trouble with plx sm afr

Post by tweenpix » Sun Nov 06, 2016 3:59 am

i'm resolve problem.
replace WB sensor

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