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View Full Version : AEM wideband issue- reading nil after accelration until gas hit again


zac 3ne2nr
03-21-2011, 08:40 PM
Installed a new AEM wideband and sensor on the weekend. The issue is after letting go of the gas say on the hihgway or slower roads the gauge gets the horizontal line reading (no input?) until I hit the accelerator again
It's as if it hits maximum lean or no gases to measure, but that's not possible because the car is running and idle is fine as well as neutral decelartion.
It starts up fine and settles down on idle and all through boost holds it value but +/-.2 v.

Sensor was installed on the downpipe at more than the minimum 10Deg angle. I thought I was getting a sketch input voltage from the switched source but getting a better source didn't help.
Screw on the back of gauge is in the P0 position.

any input and ideas will be welcomed.
Zac

di-devol
03-21-2011, 09:37 PM
Nissans' go full lean on decel, I suppose different gauges display it differently. My lc-1 just shows 21 on decel.

It's prolly normal.

dreadedfist
03-21-2011, 11:19 PM
When decelerating while in gear, the injectors inject little (if any?) fuel, as the transmission is turning the engine. The wideband just displays this as a line. Happens to someone I know who has an AEM wideband as well. This is also why it's better to slow down in gear instead of throwing it into neutral. Uses less fuel.

hpipro4
03-21-2011, 11:26 PM
thats normal for aem eugo...i have one too.

HPKMotorsports3
03-21-2011, 11:49 PM
good to know when i install mine

zac 3ne2nr
03-22-2011, 07:57 AM
Thanks guys, this does seem to be normal operation for the AEM unit.
peace.
zac