jumpy AFR

[nathans1987]

i have a wierd problem with my afr being jumpy. it never used to happen but not the afr randomly jumps at steady throttle map and speed etc. it also has alot of trouble following the commanded afr if it changes quickly (like if i floor it itll go really rich then really lean then steady on commanded afr). my ve table is pretty close i think and it never used to do it. anyone know what it could be?

[mr.prick]

Make sure your WBO2 is working/set properly.
Sometimes the LC-1 loses it's settings.

[nathans1987]

for seriall connection what settings do you use? the same as analouge?

[mr.prick]

Yes,
gas, diesel ect. analog voltage settings will not matter use the EXT.WBO2 PIDs.
A free air cal every now and again does not hurt either.

[nathans1987]

do u take sensor out exhaust to do free air? i did one about a week ago ill post a pic of what i mean.

[mr.prick]

You don't need to.

[nathans1987]

oh thats good because it was a pain taking it out all the time. how long should i leave it with the car off to do it?

this what i ment by jumpy everything is steady map, rpm, speed, throttle etc etc. but the afr jumps where i would think it shouldnt because its the same as the bits befor and after. my lc-1 settings are right also and its was recently done a free air.

[mr.prick]

WBO2 readings will not be a flat line.
There will be fluctuations, especially in CL.
Overall that chart looks pretty good.